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Login screen broken after recent upgrade

pacman -Syu a few days back broke my login screen.

Booting up the machine looks normal until after the virtual console login prompt.  The screen clears and the X Windows arrow cursor appears.  After a longish pause the screen goes black; then it goes sort of white with vague patterns; then black again.
When the greeter screen comes up the background (DNA etc) looks OK, but there are no boxes in which to type name and password, although there does appear to be an I-bar text cursor.  After a few seconds the screen goes black again and generally stays that way.  Attempts to switch to another virtual console usually fail, and the only available action appears to be powering off the machine.

I am using plasma with sddm.  I have tried downgrading sddm and sddm-kcm to no avail.   X Windows seems to be OK:  booting with a "nox" option and running  startx /usr/bin/startplasma-x11 will often work, at least on the second try.

Not sure what logs are useful, but here's the tail end of the sddm.log followed by Xorg.0.log:

Code: [Select]
[21:42:32.416] (II) DAEMON: Initializing...
[21:42:32.570] (II) DAEMON: Starting...
[21:42:32.570] (II) DAEMON: Logind interface found
[21:42:32.572] (II) DAEMON: Adding new display on vt 7 ...
[21:42:32.698] (II) DAEMON: Loading theme configuration from ""
[21:42:32.698] (II) DAEMON: Display server starting...
[21:42:32.698] (II) DAEMON: Adding cookie to "/var/run/sddm/{45e99e84-d854-4782-a507-840f8998801a}"
[21:42:32.848] (II) DAEMON: Running: /usr/bin/X -nolisten tcp -background none -seat seat0 vt7 -auth /var/run/sddm/{45e99e84-d854-4782-a507-840f8998801a} -noreset -displayfd 17
[21:42:41.601] (II) DAEMON: Setting default cursor
[21:42:41.805] (II) DAEMON: Running display setup script  "/usr/share/sddm/scripts/Xsetup"
[21:42:41.862] (II) DAEMON: Display server started.
[21:42:41.863] (II) DAEMON: Socket server starting...
[21:42:41.863] (II) DAEMON: Socket server started.
[21:42:41.930] (II) DAEMON: Loading theme configuration from "/usr/share/sddm/themes/artix/theme.conf"
[21:42:41.931] (II) DAEMON: Greeter starting...
[21:42:42.123] (II) HELPER: [PAM] Starting...
[21:42:42.123] (II) HELPER: [PAM] Authenticating...
[21:42:42.123] (II) HELPER: [PAM] returning.
[21:42:42.269] (II) DAEMON: Greeter session started successfully
[21:42:44.175] (II) DAEMON: Message received from greeter: Connect
[21:44:45.010] (WW) DAEMON: Signal received: SIGTERM
[21:44:45.010] (II) DAEMON: Greeter stopping...
[21:44:45.010] (II) DAEMON: Socket server stopping...
[21:44:45.010] (II) DAEMON: Socket server stopped.
[21:44:45.010] (II) DAEMON: Display server stopping...
[21:44:45.252] (II) DAEMON: Display server stopped.
[21:44:45.252] (II) DAEMON: Running display stop script  "/usr/share/sddm/scripts/Xstop"
[21:44:45.276] (II) DAEMON: Greeter stopping...
[21:44:45.276] (WW) DAEMON: QProcess: Destroyed while process ("/usr/lib/sddm/sddm-helper") is still running.
[22:49:02.394] (II) DAEMON: Initializing...
[22:49:02.609] (II) DAEMON: Starting...
[22:49:02.609] (II) DAEMON: Logind interface found
[22:49:02.611] (II) DAEMON: Adding new display on vt 7 ...
[22:49:02.776] (II) DAEMON: Loading theme configuration from ""
[22:49:02.776] (II) DAEMON: Display server starting...
[22:49:02.776] (II) DAEMON: Adding cookie to "/var/run/sddm/{febb83e2-7095-4c3d-bcb0-ad828b3aee7c}"
[22:49:03.094] (II) DAEMON: Running: /usr/bin/X -nolisten tcp -background none -seat seat0 vt7 -auth /var/run/sddm/{febb83e2-7095-4c3d-bcb0-ad828b3aee7c} -noreset -displayfd 17
[22:49:10.873] (II) DAEMON: Setting default cursor
[22:49:11.114] (II) DAEMON: Running display setup script  "/usr/share/sddm/scripts/Xsetup"
[22:49:11.162] (II) DAEMON: Display server started.
[22:49:11.162] (II) DAEMON: Socket server starting...
[22:49:11.163] (II) DAEMON: Socket server started.
[22:49:11.236] (II) DAEMON: Loading theme configuration from "/usr/share/sddm/themes/artix/theme.conf"
[22:49:11.237] (II) DAEMON: Greeter starting...
[22:49:11.445] (II) HELPER: [PAM] Starting...
[22:49:11.445] (II) HELPER: [PAM] Authenticating...
[22:49:11.445] (II) HELPER: [PAM] returning.
[22:49:11.568] (II) DAEMON: Greeter session started successfully
[22:49:13.479] (II) DAEMON: Message received from greeter: Connect

---------------------------

[    31.229] (--) Log file renamed from "/var/log/Xorg.pid-2394.log" to "/var/log/Xorg.0.log"
[    31.259] 
X.Org X Server 1.21.1.8
X Protocol Version 11, Revision 0
[    31.259] Current Operating System: Linux artsy 6.4.1-artix1-1 #1 SMP PREEMPT_DYNAMIC Sat, 01 Jul 2023 18:50:59 +0000 x86_64
[    31.259] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-linux root=UUID=b6746bbf-8ecd-4357-bae4-f677b60c36b0 rw net.ifnames=0 quiet
[    31.259]  
[    31.259] Current version of pixman: 0.42.2
[    31.259] 	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
[    31.259] Markers: (--) probed, (**) from config file, (==) default setting,
	(++) from command line, (!!) notice, (II) informational,
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[    31.260] (==) Log file: "/var/log/Xorg.0.log", Time: Sat Jul  8 22:49:03 2023
[    31.331] (==) Using config directory: "/etc/X11/xorg.conf.d"
[    31.331] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[    31.388] (==) No Layout section.  Using the first Screen section.
[    31.388] (==) No screen section available. Using defaults.
[    31.388] (**) |-->Screen "Default Screen Section" (0)
[    31.389] (**) |   |-->Monitor "<default monitor>"
[    31.389] (==) No monitor specified for screen "Default Screen Section".
	Using a default monitor configuration.
[    31.389] (==) Automatically adding devices
[    31.389] (==) Automatically enabling devices
[    31.389] (==) Automatically adding GPU devices
[    31.389] (==) Automatically binding GPU devices
[    31.389] (==) Max clients allowed: 256, resource mask: 0x1fffff
[    31.431] (WW) The directory "/usr/share/fonts/Type1" does not exist.
[    31.432] 	Entry deleted from font path.
[    31.432] (WW) The directory "/usr/share/fonts/100dpi" does not exist.
[    31.432] 	Entry deleted from font path.
[    31.432] (WW) The directory "/usr/share/fonts/75dpi" does not exist.
[    31.432] 	Entry deleted from font path.
[    31.432] (==) FontPath set to:
	/usr/share/fonts/misc,
	/usr/share/fonts/TTF,
	/usr/share/fonts/OTF
[    31.432] (==) ModulePath set to "/usr/lib/xorg/modules"
[    31.432] (II) The server relies on udev to provide the list of input devices.
	If no devices become available, reconfigure udev or disable AutoAddDevices.
[    31.432] (II) Module ABI versions:
[    31.432] 	X.Org ANSI C Emulation: 0.4
[    31.432] 	X.Org Video Driver: 25.2
[    31.432] 	X.Org XInput driver : 24.4
[    31.432] 	X.Org Server Extension : 10.0
[    31.435] (++) using VT number 7

[    31.435] (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration
[    31.438] (II) xfree86: Adding drm device (/dev/dri/card0)
[    31.438] (II) Platform probe for /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card0
[    31.445] (--) PCI:*(1@0:0:0) 1002:95c4:104d:9035 rev 0, Mem @ 0xc0000000/268435456, 0xd0020000/65536, I/O @ 0x00006000/256, BIOS @ 0x????????/131072
[    31.446] (II) Open ACPI successful (/var/run/acpid.socket)
[    31.446] (II) LoadModule: "glx"
[    31.512] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[    31.655] (II) Module glx: vendor="X.Org Foundation"
[    31.655] 	compiled for 1.21.1.8, module version = 1.0.0
[    31.655] 	ABI class: X.Org Server Extension, version 10.0
[    31.655] (II) Applying OutputClass "Radeon" to /dev/dri/card0
[    31.655] 	loading driver: radeon
[    31.655] (==) Matched radeon as autoconfigured driver 0
[    31.655] (==) Matched ati as autoconfigured driver 1
[    31.655] (==) Matched modesetting as autoconfigured driver 2
[    31.655] (==) Matched fbdev as autoconfigured driver 3
[    31.655] (==) Matched vesa as autoconfigured driver 4
[    31.655] (==) Assigned the driver to the xf86ConfigLayout
[    31.655] (II) LoadModule: "radeon"
[    31.699] (II) Loading /usr/lib/xorg/modules/drivers/radeon_drv.so
[    31.790] (II) Module radeon: vendor="X.Org Foundation"
[    31.790] 	compiled for 1.21.1.8, module version = 22.0.0
[    31.790] 	Module class: X.Org Video Driver
[    31.790] 	ABI class: X.Org Video Driver, version 25.2
[    31.790] (II) LoadModule: "ati"
[    31.790] (II) Loading /usr/lib/xorg/modules/drivers/ati_drv.so
[    31.799] (II) Module ati: vendor="X.Org Foundation"
[    31.799] 	compiled for 1.21.1.8, module version = 22.0.0
[    31.799] 	Module class: X.Org Video Driver
[    31.799] 	ABI class: X.Org Video Driver, version 25.2
[    31.799] (II) LoadModule: "modesetting"
[    31.799] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
[    31.819] (II) Module modesetting: vendor="X.Org Foundation"
[    31.819] 	compiled for 1.21.1.8, module version = 1.21.1
[    31.819] 	Module class: X.Org Video Driver
[    31.819] 	ABI class: X.Org Video Driver, version 25.2
[    31.819] (II) LoadModule: "fbdev"
[    31.819] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
[    31.834] (II) Module fbdev: vendor="X.Org Foundation"
[    31.834] 	compiled for 1.21.1.1, module version = 0.5.0
[    31.834] 	Module class: X.Org Video Driver
[    31.834] 	ABI class: X.Org Video Driver, version 25.2
[    31.834] (II) LoadModule: "vesa"
[    31.834] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so
[    31.850] (II) Module vesa: vendor="X.Org Foundation"
[    31.850] 	compiled for 1.21.1.4, module version = 2.6.0
[    31.850] 	Module class: X.Org Video Driver
[    31.850] 	ABI class: X.Org Video Driver, version 25.2
[    31.850] (II) RADEON: Driver for ATI/AMD Radeon chipsets:
	ATI Radeon Mobility X600 (M24), ATI FireMV 2400,
	ATI Radeon Mobility X300 (M24), ATI FireGL M24 GL,
	ATI Radeon X600 (RV380), ATI FireGL V3200 (RV380),
	ATI Radeon IGP320 (A3), ATI Radeon IGP330/340/350 (A4),
	ATI Radeon 9500, ATI Radeon 9600TX, ATI FireGL Z1, ATI Radeon 9800SE,
	ATI Radeon 9800, ATI FireGL X2, ATI Radeon 9600, ATI Radeon 9600SE,
	ATI Radeon 9600XT, ATI FireGL T2, ATI Radeon 9650, ATI FireGL RV360,
	ATI Radeon 7000 IGP (A4+), ATI Radeon 8500 AIW,
	ATI Radeon IGP320M (U1), ATI Radeon IGP330M/340M/350M (U2),
	ATI Radeon Mobility 7000 IGP, ATI Radeon 9000/PRO, ATI Radeon 9000,
	ATI Radeon X800 (R420), ATI Radeon X800PRO (R420),
	ATI Radeon X800SE (R420), ATI FireGL X3 (R420),
	ATI Radeon Mobility 9800 (M18), ATI Radeon X800 SE (R420),
	ATI Radeon X800XT (R420), ATI Radeon X800 VE (R420),
	ATI Radeon X850 (R480), ATI Radeon X850 XT (R480),
	ATI Radeon X850 SE (R480), ATI Radeon X850 PRO (R480),
	ATI Radeon X850 XT PE (R480), ATI Radeon Mobility M7,
	ATI Mobility FireGL 7800 M7, ATI Radeon Mobility M6,
	ATI FireGL Mobility 9000 (M9), ATI Radeon Mobility 9000 (M9),
	ATI Radeon 9700 Pro, ATI Radeon 9700/9500Pro, ATI FireGL X1,
	ATI Radeon 9800PRO, ATI Radeon 9800XT,
	ATI Radeon Mobility 9600/9700 (M10/M11),
	ATI Radeon Mobility 9600 (M10), ATI Radeon Mobility 9600 (M11),
	ATI FireGL Mobility T2 (M10), ATI FireGL Mobility T2e (M11),
	ATI Radeon, ATI FireGL 8700/8800, ATI Radeon 8500, ATI Radeon 9100,
	ATI Radeon 7500, ATI Radeon VE/7000, ATI ES1000,
	ATI Radeon Mobility X300 (M22), ATI Radeon Mobility X600 SE (M24C),
	ATI FireGL M22 GL, ATI Radeon X800 (R423), ATI Radeon X800PRO (R423),
	ATI Radeon X800LE (R423), ATI Radeon X800SE (R423),
	ATI Radeon X800 XTP (R430), ATI Radeon X800 XL (R430),
	ATI Radeon X800 SE (R430), ATI Radeon X800 (R430),
	ATI FireGL V7100 (R423), ATI FireGL V5100 (R423),
	ATI FireGL unknown (R423), ATI Mobility FireGL V5000 (M26),
	ATI Mobility Radeon X700 XL (M26), ATI Mobility Radeon X700 (M26),
	ATI Radeon X550XTX, ATI Radeon 9100 IGP (A5),
	ATI Radeon Mobility 9100 IGP (U3), ATI Radeon XPRESS 200,
	ATI Radeon XPRESS 200M, ATI Radeon 9250, ATI Radeon 9200,
	ATI Radeon 9200SE, ATI FireMV 2200, ATI Radeon X300 (RV370),
	ATI Radeon X600 (RV370), ATI Radeon X550 (RV370),
	ATI FireGL V3100 (RV370), ATI FireMV 2200 PCIE (RV370),
	ATI Radeon Mobility 9200 (M9+), ATI Mobility Radeon X800 XT (M28),
	ATI Mobility FireGL V5100 (M28), ATI Mobility Radeon X800 (M28),
	ATI Radeon X850, ATI unknown Radeon / FireGL (R480),
	ATI Radeon X800XT (R423), ATI FireGL V5000 (RV410),
	ATI Radeon X700 XT (RV410), ATI Radeon X700 PRO (RV410),
	ATI Radeon X700 SE (RV410), ATI Radeon X700 (RV410),
	ATI Radeon X1800, ATI Mobility Radeon X1800 XT,
	ATI Mobility Radeon X1800, ATI Mobility FireGL V7200,
	ATI FireGL V7200, ATI FireGL V5300, ATI Mobility FireGL V7100,
	ATI FireGL V7300, ATI FireGL V7350, ATI Radeon X1600, ATI RV505,
	ATI Radeon X1300/X1550, ATI Radeon X1550, ATI M54-GL,
	ATI Mobility Radeon X1400, ATI Radeon X1550 64-bit,
	ATI Mobility Radeon X1300, ATI Radeon X1300, ATI FireGL V3300,
	ATI FireGL V3350, ATI Mobility Radeon X1450,
	ATI Mobility Radeon X2300, ATI Mobility Radeon X1350,
	ATI FireMV 2250, ATI Radeon X1650, ATI Mobility FireGL V5200,
	ATI Mobility Radeon X1600, ATI Radeon X1300 XT/X1600 Pro,
	ATI FireGL V3400, ATI Mobility FireGL V5250,
	ATI Mobility Radeon X1700, ATI Mobility Radeon X1700 XT,
	ATI FireGL V5200, ATI Radeon X2300HD, ATI Mobility Radeon HD 2300,
	ATI Radeon X1950, ATI Radeon X1900, ATI AMD Stream Processor,
	ATI RV560, ATI Mobility Radeon X1900, ATI Radeon X1950 GT, ATI RV570,
	ATI FireGL V7400, ATI Radeon 9100 PRO IGP,
	ATI Radeon Mobility 9200 IGP, ATI Radeon X1200, ATI RS740,
	ATI RS740M, ATI Radeon HD 2900 XT, ATI Radeon HD 2900 Pro,
	ATI Radeon HD 2900 GT, ATI FireGL V8650, ATI FireGL V8600,
	ATI FireGL V7600, ATI Radeon 4800 Series, ATI Radeon HD 4870 x2,
	ATI Radeon HD 4850 x2, ATI FirePro V8750 (FireGL),
	ATI FirePro V7760 (FireGL), ATI Mobility RADEON HD 4850,
	ATI Mobility RADEON HD 4850 X2, ATI FirePro RV770,
	AMD FireStream 9270, AMD FireStream 9250, ATI FirePro V8700 (FireGL),
	ATI Mobility RADEON HD 4870, ATI Mobility RADEON M98,
	ATI FirePro M7750, ATI M98, ATI Mobility Radeon HD 4650,
	ATI Radeon RV730 (AGP), ATI Mobility Radeon HD 4670,
	ATI FirePro M5750, ATI RV730XT [Radeon HD 4670], ATI RADEON E4600,
	ATI Radeon HD 4600 Series, ATI RV730 PRO [Radeon HD 4650],
	ATI FirePro V7750 (FireGL), ATI FirePro V5700 (FireGL),
	ATI FirePro V3750 (FireGL), ATI Mobility Radeon HD 4830,
	ATI Mobility Radeon HD 4850, ATI FirePro M7740, ATI RV740,
	ATI Radeon HD 4770, ATI Radeon HD 4700 Series, ATI RV610,
	ATI Radeon HD 2400 XT, ATI Radeon HD 2400 Pro,
	ATI Radeon HD 2400 PRO AGP, ATI FireGL V4000, ATI Radeon HD 2350,
	ATI Mobility Radeon HD 2400 XT, ATI Mobility Radeon HD 2400,
	ATI RADEON E2400, ATI FireMV 2260, ATI RV670, ATI Radeon HD3870,
	ATI Mobility Radeon HD 3850, ATI Radeon HD3850,
	ATI Mobility Radeon HD 3850 X2, ATI Mobility Radeon HD 3870,
	ATI Mobility Radeon HD 3870 X2, ATI Radeon HD3870 X2,
	ATI FireGL V7700, ATI Radeon HD3690, AMD Firestream 9170,
	ATI Radeon HD 4550, ATI Radeon RV710, ATI Radeon HD 4350,
	ATI Mobility Radeon 4300 Series, ATI Mobility Radeon 4500 Series,
	ATI FirePro RG220, ATI Mobility Radeon 4330, ATI RV630,
	ATI Mobility Radeon HD 2600, ATI Mobility Radeon HD 2600 XT,
	ATI Radeon HD 2600 XT AGP, ATI Radeon HD 2600 Pro AGP,
	ATI Radeon HD 2600 XT, ATI Radeon HD 2600 Pro, ATI Gemini RV630,
	ATI Gemini Mobility Radeon HD 2600 XT, ATI FireGL V5600,
	ATI FireGL V3600, ATI Radeon HD 2600 LE,
	ATI Mobility FireGL Graphics Processor, ATI Radeon HD 3470,
	ATI Mobility Radeon HD 3430, ATI Mobility Radeon HD 3400 Series,
	ATI Radeon HD 3450, ATI Radeon HD 3430, ATI FirePro V3700,
	ATI FireMV 2450, ATI Radeon HD 3600 Series, ATI Radeon HD 3650 AGP,
	ATI Radeon HD 3600 PRO, ATI Radeon HD 3600 XT,
	ATI Mobility Radeon HD 3650, ATI Mobility Radeon HD 3670,
	ATI Mobility FireGL V5700, ATI Mobility FireGL V5725,
	ATI Radeon HD 3200 Graphics, ATI Radeon 3100 Graphics,
	ATI Radeon HD 3300 Graphics, ATI Radeon 3000 Graphics, SUMO, SUMO2,
	ATI Radeon HD 4200, ATI Radeon 4100, ATI Mobility Radeon HD 4200,
	ATI Mobility Radeon 4100, ATI Radeon HD 4290, ATI Radeon HD 4250,
	AMD Radeon HD 6310 Graphics, AMD Radeon HD 6250 Graphics,
	AMD Radeon HD 6300 Series Graphics,
	AMD Radeon HD 6200 Series Graphics, PALM, CYPRESS,
	ATI FirePro (FireGL) Graphics Adapter, AMD Firestream 9370,
	AMD Firestream 9350, ATI Radeon HD 5800 Series,
	ATI Radeon HD 5900 Series, ATI Mobility Radeon HD 5800 Series,
	ATI Radeon HD 5700 Series, ATI Radeon HD 6700 Series,
	ATI Mobility Radeon HD 5000 Series, ATI Mobility Radeon HD 5570,
	ATI Radeon HD 5670, ATI Radeon HD 5570, ATI Radeon HD 5500 Series,
	REDWOOD, ATI Mobility Radeon Graphics, CEDAR, ATI FirePro 2270,
	ATI Radeon HD 5450, CAYMAN, AMD Radeon HD 6900 Series,
	AMD Radeon HD 6900M Series, Mobility Radeon HD 6000 Series, BARTS,
	AMD Radeon HD 6800 Series, AMD Radeon HD 6700 Series, TURKS, CAICOS,
	ARUBA, TAHITI, PITCAIRN, VERDE, OLAND, HAINAN, BONAIRE, KABINI,
	MULLINS, KAVERI, HAWAII
[    31.853] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
[    31.853] (II) FBDEV: driver for framebuffer: fbdev
[    31.853] (II) VESA: driver for VESA chipsets: vesa
[    31.858] (II) [KMS] Kernel modesetting enabled.
[    31.858] (WW) Falling back to old probe method for modesetting
[    31.858] (WW) Falling back to old probe method for fbdev
[    31.858] (II) Loading sub module "fbdevhw"
[    31.859] (II) LoadModule: "fbdevhw"
[    31.859] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
[    31.873] (II) Module fbdevhw: vendor="X.Org Foundation"
[    31.873] 	compiled for 1.21.1.8, module version = 0.0.2
[    31.873] 	ABI class: X.Org Video Driver, version 25.2
[    31.873] (II) RADEON(0): Creating default Display subsection in Screen section
	"Default Screen Section" for depth/fbbpp 24/32
[    31.873] (==) RADEON(0): Depth 24, (--) framebuffer bpp 32
[    31.873] (II) RADEON(0): Pixel depth = 24 bits stored in 4 bytes (32 bpp pixmaps)
[    31.873] (==) RADEON(0): Default visual is TrueColor
[    31.873] (==) RADEON(0): RGB weight 888
[    31.873] (II) RADEON(0): Using 8 bits per RGB (8 bit DAC)
[    31.873] (--) RADEON(0): Chipset: "ATI Mobility Radeon HD 3400 Series" (ChipID = 0x95c4)
[    31.873] (II) Loading sub module "fb"
[    31.873] (II) LoadModule: "fb"
[    31.873] (II) Module "fb" already built-in
[    31.873] (II) Loading sub module "dri2"
[    31.873] (II) LoadModule: "dri2"
[    31.873] (II) Module "dri2" already built-in
[    35.663] (II) Loading sub module "glamoregl"
[    35.663] (II) LoadModule: "glamoregl"
[    35.663] (II) Loading /usr/lib/xorg/modules/libglamoregl.so
[    35.762] (II) Module glamoregl: vendor="X.Org Foundation"
[    35.762] 	compiled for 1.21.1.8, module version = 1.0.1
[    35.762] 	ABI class: X.Org ANSI C Emulation, version 0.4
[    36.018] (II) RADEON(0): glamor X acceleration enabled on AMD RV620 (DRM 2.50.0 / 6.4.1-artix1-1, LLVM 15.0.7)
[    36.018] (II) RADEON(0): glamor detected, initialising EGL layer.
[    36.018] (II) RADEON(0): KMS Color Tiling: enabled
[    36.018] (II) RADEON(0): KMS Color Tiling 2D: enabled
[    36.018] (==) RADEON(0): TearFree property default: auto
[    36.018] (II) RADEON(0): KMS Pageflipping: enabled
[    36.041] (II) RADEON(0): Output VGA-0 has no monitor section
[    36.041] (II) RADEON(0): Output LVDS has no monitor section
[    36.042] (II) RADEON(0): Output HDMI-0 has no monitor section
[    36.042] (WW) RADEON(0): 3 ZaphodHeads crtcs unavailable. Some outputs will stay off.
[    36.057] (II) RADEON(0): EDID for output VGA-0
[    36.057] (II) RADEON(0): EDID for output LVDS
[    36.057] (II) RADEON(0): Printing probed modes for output LVDS
[    36.057] (II) RADEON(0): Modeline "1600x900"x60.0   88.54  1600 1614 1626 1630  900 902 904 906 -hsync -vsync (54.3 kHz eP)
[    36.057] (II) RADEON(0): Modeline "1440x900"x60.0  106.68  1440 1528 1672 1904  900 903 909 934 -hsync +vsync (56.0 kHz)
[    36.057] (II) RADEON(0): Modeline "1280x854"x60.0   89.34  1280 1352 1480 1680  854 857 867 887 -hsync +vsync (53.2 kHz)
[    36.057] (II) RADEON(0): Modeline "1280x800"x60.0   83.71  1280 1352 1480 1680  800 803 809 831 -hsync +vsync (49.8 kHz)
[    36.057] (II) RADEON(0): Modeline "1280x720"x60.0   74.65  1280 1344 1472 1664  720 723 728 748 -hsync +vsync (44.9 kHz)
[    36.057] (II) RADEON(0): Modeline "1152x768"x59.9   71.95  1152 1216 1328 1504  768 771 781 798 -hsync +vsync (47.8 kHz)
[    36.057] (II) RADEON(0): Modeline "1024x768"x59.9   63.53  1024 1072 1176 1328  768 771 775 798 -hsync +vsync (47.8 kHz)
[    36.057] (II) RADEON(0): Modeline "800x600"x60.0   38.31  800 832 912 1024  600 603 607 624 -hsync +vsync (37.4 kHz)
[    36.057] (II) RADEON(0): Modeline "848x480"x59.9   31.65  848 872 952 1056  480 483 493 500 -hsync +vsync (30.0 kHz)
[    36.057] (II) RADEON(0): Modeline "720x480"x59.9   26.85  720 744 808 896  480 483 493 500 -hsync +vsync (30.0 kHz)
[    36.057] (II) RADEON(0): Modeline "640x480"x59.9   23.98  640 664 720 800  480 483 487 500 -hsync +vsync (30.0 kHz)
[    36.058] (II) RADEON(0): EDID for output HDMI-0
[    36.058] (II) RADEON(0): Output VGA-0 disconnected
[    36.058] (II) RADEON(0): Output LVDS connected
[    36.058] (II) RADEON(0): Output HDMI-0 disconnected
[    36.058] (II) RADEON(0): Using exact sizes for initial modes
[    36.058] (II) RADEON(0): Output LVDS using initial mode 1600x900 +0+0
[    36.058] (II) RADEON(0): mem size init: gart size :1fdee000 vram size: s:10000000 visible:f838000
[    36.058] (==) RADEON(0): DPI set to (96, 96)
[    36.058] (==) RADEON(0): Using gamma correction (1.0, 1.0, 1.0)
[    36.058] (II) Loading sub module "ramdac"
[    36.058] (II) LoadModule: "ramdac"
[    36.058] (II) Module "ramdac" already built-in
[    36.058] (II) UnloadModule: "modesetting"
[    36.058] (II) Unloading modesetting
[    36.058] (II) UnloadModule: "fbdev"
[    36.058] (II) Unloading fbdev
[    36.059] (II) UnloadSubModule: "fbdevhw"
[    36.059] (II) Unloading fbdevhw
[    36.059] (II) UnloadModule: "vesa"
[    36.059] (II) Unloading vesa
[    36.059] (II) RADEON(0): [DRI2] Setup complete
[    36.059] (II) RADEON(0): [DRI2]   DRI driver: r600
[    36.059] (II) RADEON(0): [DRI2]   VDPAU driver: r600
[    36.059] (II) RADEON(0): Front buffer size: 5625K
[    36.059] (II) RADEON(0): VRAM usage limit set to 223667K
[    36.085] (II) RADEON(0): SYNC extension fences enabled
[    36.085] (II) RADEON(0): Present extension enabled
[    36.085] (==) RADEON(0): DRI3 enabled
[    36.085] (==) RADEON(0): Backing store enabled
[    36.085] (II) RADEON(0): Direct rendering enabled
[    36.916] (II) RADEON(0): Use GLAMOR acceleration.
[    36.916] (II) RADEON(0): Acceleration enabled
[    36.916] (==) RADEON(0): DPMS enabled
[    36.916] (==) RADEON(0): Silken mouse enabled
[    36.916] (II) RADEON(0): Set up textured video (glamor)
[    36.916] (II) RADEON(0): [XvMC] Associated with GLAMOR Textured Video.
[    36.916] (II) RADEON(0): [XvMC] Extension initialized.
[    36.917] (II) Initializing extension Generic Event Extension
[    36.917] (II) Initializing extension SHAPE
[    36.917] (II) Initializing extension MIT-SHM
[    36.918] (II) Initializing extension XInputExtension
[    36.918] (II) Initializing extension XTEST
[    36.918] (II) Initializing extension BIG-REQUESTS
[    36.919] (II) Initializing extension SYNC
[    36.919] (II) Initializing extension XKEYBOARD
[    36.919] (II) Initializing extension XC-MISC
[    36.920] (II) Initializing extension SECURITY
[    36.920] (II) Initializing extension XFIXES
[    36.920] (II) Initializing extension RENDER
[    36.920] (II) Initializing extension RANDR
[    36.921] (II) Initializing extension COMPOSITE
[    36.921] (II) Initializing extension DAMAGE
[    36.922] (II) Initializing extension MIT-SCREEN-SAVER
[    36.922] (II) Initializing extension DOUBLE-BUFFER
[    36.922] (II) Initializing extension RECORD
[    36.922] (II) Initializing extension DPMS
[    36.923] (II) Initializing extension Present
[    36.923] (II) Initializing extension DRI3
[    36.923] (II) Initializing extension X-Resource
[    36.924] (II) Initializing extension XVideo
[    36.924] (II) Initializing extension XVideo-MotionCompensation
[    36.924] (II) Initializing extension GLX
[    36.942] (II) AIGLX: Loaded and initialized r600
[    36.943] (II) GLX: Initialized DRI2 GL provider for screen 0
[    36.943] (II) Initializing extension XFree86-VidModeExtension
[    36.943] (II) Initializing extension XFree86-DGA
[    36.943] (II) Initializing extension XFree86-DRI
[    36.943] (II) Initializing extension DRI2
[    36.944] (II) RADEON(0): Setting screen physical size to 423 x 238
[    37.727] (II) config/udev: Adding input device Sony Vaio Keys (/dev/input/event4)
[    37.727] (**) Sony Vaio Keys: Applying InputClass "libinput keyboard catchall"
[    37.727] (**) Sony Vaio Keys: Applying InputClass "system-keyboard"
[    37.727] (II) LoadModule: "libinput"
[    37.728] (II) Loading /usr/lib/xorg/modules/input/libinput_drv.so
[    37.776] (II) Module libinput: vendor="X.Org Foundation"
[    37.776] 	compiled for 1.21.1.8, module version = 1.3.0
[    37.776] 	Module class: X.Org XInput Driver
[    37.776] 	ABI class: X.Org XInput driver, version 24.4
[    37.776] (II) Using input driver 'libinput' for 'Sony Vaio Keys'
[    37.776] (**) Sony Vaio Keys: always reports core events
[    37.776] (**) Option "Device" "/dev/input/event4"
[    37.881] (II) event4  - Sony Vaio Keys: is tagged by udev as: Keyboard
[    37.881] (II) event4  - Sony Vaio Keys: device is a keyboard
[    37.882] (II) event4  - Sony Vaio Keys: device removed
[    37.900] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:03/SNY5001:00/input/input5/event4"
[    37.900] (II) XINPUT: Adding extended input device "Sony Vaio Keys" (type: KEYBOARD, id 6)
[    37.900] (**) Option "xkb_model" "pc105"
[    37.900] (**) Option "xkb_layout" "us"
[    37.902] (II) event4  - Sony Vaio Keys: is tagged by udev as: Keyboard
[    37.902] (II) event4  - Sony Vaio Keys: device is a keyboard
[    37.903] (II) config/udev: Adding input device Sony Vaio Jogdial (/dev/input/event5)
[    37.903] (**) Sony Vaio Jogdial: Applying InputClass "libinput pointer catchall"
[    37.903] (II) Using input driver 'libinput' for 'Sony Vaio Jogdial'
[    37.903] (**) Sony Vaio Jogdial: always reports core events
[    37.903] (**) Option "Device" "/dev/input/event5"
[    37.905] (II) event5  - Sony Vaio Jogdial: is tagged by udev as: Mouse
[    37.905] (II) event5  - Sony Vaio Jogdial: device is a pointer
[    37.905] (II) event5  - Sony Vaio Jogdial: device removed
[    37.946] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:03/SNY5001:00/input/input6/event5"
[    37.946] (II) XINPUT: Adding extended input device "Sony Vaio Jogdial" (type: MOUSE, id 7)
[    37.946] (**) Option "AccelerationScheme" "none"
[    37.947] (**) Sony Vaio Jogdial: (accel) selected scheme none/0
[    37.947] (**) Sony Vaio Jogdial: (accel) acceleration factor: 2.000
[    37.947] (**) Sony Vaio Jogdial: (accel) acceleration threshold: 4
[    37.948] (II) event5  - Sony Vaio Jogdial: is tagged by udev as: Mouse
[    37.948] (II) event5  - Sony Vaio Jogdial: device is a pointer
[    37.949] (II) config/udev: Adding input device Sony Vaio Jogdial (/dev/input/mouse0)
[    37.949] (II) No input driver specified, ignoring this device.
[    37.949] (II) This device may have been added with another device file.
[    37.950] (II) config/udev: Adding input device Video Bus (/dev/input/event3)
[    37.950] (**) Video Bus: Applying InputClass "libinput keyboard catchall"
[    37.950] (**) Video Bus: Applying InputClass "system-keyboard"
[    37.950] (II) Using input driver 'libinput' for 'Video Bus'
[    37.950] (**) Video Bus: always reports core events
[    37.950] (**) Option "Device" "/dev/input/event3"
[    37.952] (II) event3  - Video Bus: is tagged by udev as: Keyboard
[    37.952] (II) event3  - Video Bus: device is a keyboard
[    37.952] (II) event3  - Video Bus: device removed
[    37.980] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:29/LNXVIDEO:01/input/input4/event3"
[    37.980] (II) XINPUT: Adding extended input device "Video Bus" (type: KEYBOARD, id 8)
[    37.980] (**) Option "xkb_model" "pc105"
[    37.980] (**) Option "xkb_layout" "us"
[    37.981] (II) event3  - Video Bus: is tagged by udev as: Keyboard
[    37.982] (II) event3  - Video Bus: device is a keyboard
[    37.983] (II) config/udev: Adding input device Power Button (/dev/input/event1)
[    37.983] (**) Power Button: Applying InputClass "libinput keyboard catchall"
[    37.983] (**) Power Button: Applying InputClass "system-keyboard"
[    37.983] (II) Using input driver 'libinput' for 'Power Button'
[    37.983] (**) Power Button: always reports core events
[    37.983] (**) Option "Device" "/dev/input/event1"
[    37.984] (II) event1  - Power Button: is tagged by udev as: Keyboard
[    37.984] (II) event1  - Power Button: device is a keyboard
[    37.984] (II) event1  - Power Button: device removed
[    38.016] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input1/event1"
[    38.016] (II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD, id 9)
[    38.016] (**) Option "xkb_model" "pc105"
[    38.016] (**) Option "xkb_layout" "us"
[    38.018] (II) event1  - Power Button: is tagged by udev as: Keyboard
[    38.018] (II) event1  - Power Button: device is a keyboard
[    38.019] (II) config/udev: Adding input device Lid Switch (/dev/input/event0)
[    38.019] (II) No input driver specified, ignoring this device.
[    38.019] (II) This device may have been added with another device file.
[    38.020] (II) config/udev: Adding input device HDA ATI HDMI HDMI/DP,pcm=3 (/dev/input/event8)
[    38.020] (II) No input driver specified, ignoring this device.
[    38.020] (II) This device may have been added with another device file.
[    38.021] (II) config/udev: Adding input device HDA Intel Mic (/dev/input/event9)
[    38.021] (II) No input driver specified, ignoring this device.
[    38.021] (II) This device may have been added with another device file.
[    38.021] (II) config/udev: Adding input device HDA Intel Headphone (/dev/input/event10)
[    38.021] (II) No input driver specified, ignoring this device.
[    38.021] (II) This device may have been added with another device file.
[    38.022] (II) config/udev: Adding input device AT Translated Set 2 keyboard (/dev/input/event2)
[    38.022] (**) AT Translated Set 2 keyboard: Applying InputClass "libinput keyboard catchall"
[    38.022] (**) AT Translated Set 2 keyboard: Applying InputClass "system-keyboard"
[    38.022] (II) Using input driver 'libinput' for 'AT Translated Set 2 keyboard'
[    38.022] (**) AT Translated Set 2 keyboard: always reports core events
[    38.022] (**) Option "Device" "/dev/input/event2"
[    38.023] (II) event2  - AT Translated Set 2 keyboard: is tagged by udev as: Keyboard
[    38.024] (II) event2  - AT Translated Set 2 keyboard: device is a keyboard
[    38.025] (II) event2  - AT Translated Set 2 keyboard: device removed
[    38.043] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio0/input/input2/event2"
[    38.043] (II) XINPUT: Adding extended input device "AT Translated Set 2 keyboard" (type: KEYBOARD, id 10)
[    38.043] (**) Option "xkb_model" "pc105"
[    38.043] (**) Option "xkb_layout" "us"
[    38.045] (II) event2  - AT Translated Set 2 keyboard: is tagged by udev as: Keyboard
[    38.046] (II) event2  - AT Translated Set 2 keyboard: device is a keyboard
[    38.048] (II) config/udev: Adding input device AlpsPS/2 ALPS GlidePoint (/dev/input/event7)
[    38.048] (**) AlpsPS/2 ALPS GlidePoint: Applying InputClass "libinput touchpad catchall"
[    38.048] (II) Using input driver 'libinput' for 'AlpsPS/2 ALPS GlidePoint'
[    38.048] (**) AlpsPS/2 ALPS GlidePoint: always reports core events
[    38.048] (**) Option "Device" "/dev/input/event7"
[    38.050] (II) event7  - AlpsPS/2 ALPS GlidePoint: is tagged by udev as: Touchpad
[    38.051] (II) event7  - AlpsPS/2 ALPS GlidePoint: no resolution or size hints, assuming a size of 69x50mm
[    38.054] (II) event7  - AlpsPS/2 ALPS GlidePoint: device is a touchpad
[    38.054] (II) event7  - AlpsPS/2 ALPS GlidePoint: device removed
[    38.103] (II) libinput: AlpsPS/2 ALPS GlidePoint: Step value 0 was provided, libinput Fallback acceleration function is used.
[    38.103] (II) libinput: AlpsPS/2 ALPS GlidePoint: Step value 0 was provided, libinput Fallback acceleration function is used.
[    38.103] (II) libinput: AlpsPS/2 ALPS GlidePoint: Step value 0 was provided, libinput Fallback acceleration function is used.
[    38.104] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio1/input/input7/event7"
[    38.104] (II) XINPUT: Adding extended input device "AlpsPS/2 ALPS GlidePoint" (type: TOUCHPAD, id 11)
[    38.105] (**) Option "AccelerationScheme" "none"
[    38.105] (**) AlpsPS/2 ALPS GlidePoint: (accel) selected scheme none/0
[    38.105] (**) AlpsPS/2 ALPS GlidePoint: (accel) acceleration factor: 2.000
[    38.105] (**) AlpsPS/2 ALPS GlidePoint: (accel) acceleration threshold: 4
[    38.106] (II) event7  - AlpsPS/2 ALPS GlidePoint: is tagged by udev as: Touchpad
[    38.107] (II) event7  - AlpsPS/2 ALPS GlidePoint: no resolution or size hints, assuming a size of 69x50mm
[    38.109] (II) event7  - AlpsPS/2 ALPS GlidePoint: device is a touchpad
[    38.110] (II) config/udev: Adding input device AlpsPS/2 ALPS GlidePoint (/dev/input/mouse1)
[    38.110] (II) No input driver specified, ignoring this device.
[    38.110] (II) This device may have been added with another device file.
[    38.111] (II) config/udev: Adding input device PC Speaker (/dev/input/event6)
[    38.111] (II) No input driver specified, ignoring this device.
[    38.111] (II) This device may have been added with another device file.
[    79.050] (WW) RADEON(0): get vblank counter failed: Invalid argument

Login screen broken after recent upgrade

Reply #1 –
I posted this to the Package Management forum a couple of days back, and then realized that it probably belongs here.  Is there a way for a "normal" user to move it?  The original, including logs, is at: 
        https://forum.artixlinux.org/index.php/topic,5673.msg35560.html#msg35560

pacman -Syu a few days back broke my login screen.

Booting up the machine looks normal until after the virtual console login prompt.  The screen clears and the X Windows arrow cursor appears.  After a longish pause the screen goes black; then it goes sort of white with vague patterns; then black again.
When the greeter screen comes up the background (DNA etc) looks OK, but there are no boxes in which to type name and password, although there does appear to be an I-bar text cursor.  After a few seconds the screen goes black again and generally stays that way.  Attempts to switch to another virtual console usually fail, and the only available action appears to be powering off the machine.

I am using plasma with sddm.  I have tried downgrading sddm and sddm-kcm to no avail.   X Windows seems to be OK:  booting with a "nox" option and running  startx /usr/bin/startplasma-x11 will often work, at least on the second try.

Please see original message (URL above) for logs.

Re: Login screen broken after recent upgrade

Reply #2 –
You did the update some days ago; did you try pacman -Syu again after that? Maybe the issue has been fixed in the mean time.

artist

Re: Login screen broken after recent upgrade

Reply #3 –
Did a pacman -Syu last night which failed to resolve the problem.  However, I have a couple of new data points.

If I boot up with sddm enabled, I get the broken login screen.  If I can manage to get to another virtual console, login, and /etc/init.d/xdm restart  the login screen comes up correctly and all is well.  Basically, the problem is (mostly) resolved by starting the display manager / window manager twice.

Having said that, if I make an application (say, the video player) full-screen, when it quits whole chunks of the desktop and other apps is black.  Minimizing the applications and restoring them fixes the problem.

I'm thinking this is a library or plasma problem, OR some piece of initialization that is being done "late", so that a second try gets things working.

Am I the only one with this problem?  What makes me so special?  ;)

Thoughts greatly appeciated.

Re: Login screen broken after recent upgrade

Reply #4 –
Try out of curiousity to install package libprocps, it fixed a similar weird issue with sddm for me few weeks ago.

Re: Login screen broken after recent upgrade

Reply #5 –
I'm having a similar issue, I didn't update artix for a month, then just did an updated and reboot today.

Once it restarted, sddm went into an infinite loop and wouldn't bring up the login screen. I uninstalled sddm-runit and installed lxdm-runit and launched that, and was able to get a login screen that way, though lxdm can't launch Plasma in Wayland mode, so I'm back on X11 for now.

I tried both a different sddm theme, as well as installing libprocps, and neither of these fixed it, nor did doing another update.

The sddm log is completely useless now, I"ll paste a section of it since I ran the update.

Code: [Select]
[18:32:45.331] (WW) DAEMON: Signal received: SIGTERM
[18:32:45.334] (II) DAEMON: Socket server stopping... 
[18:32:45.334] (II) DAEMON: Socket server stopped. 
[18:32:45.334] (II) DAEMON: Display server stopping...
[18:32:45.643] (II) DAEMON: Display server stopped.
[18:32:45.644] (II) DAEMON: Running display stop script  "/usr/share/sddm/scripts/Xstop"
[18:32:45.647] (WW) DAEMON: QProcess: Destroyed while process ("/usr/lib/sddm/sddm-helper") is still running.
[18:33:20.859] (EE) HELPER: Failed to take control of "/dev/tty1" ("root"): Operation not permitted
[18:33:20.936] (EE) HELPER: Failed to take control of "/dev/tty1" ("root"): Operation not permitted
[18:33:21.012] (EE) HELPER: Failed to take control of "/dev/tty1" ("root"): Operation not permitted
[18:33:21.089] (EE) HELPER: Failed to take control of "/dev/tty1" ("root"): Operation not permitted
[18:33:21.164] (EE) HELPER: Failed to take control of "/dev/tty1" ("root"): Operation not permitted
[18:33:21.241] (EE) HELPER: Failed to take control of "/dev/tty1" ("root"): Operation not permitted
[18:33:22.334] (EE) HELPER: Failed to take control of "/dev/tty1" ("root"): Operation not permitted
[18:33:22.408] (EE) HELPER: Failed to take control of "/dev/tty1" ("root"): Operation not permitted
[18:33:22.474] (EE) HELPER: Failed to take control of "/dev/tty1" ("root"): Operation not permitted
[18:33:22.541] (EE) HELPER: Failed to take control of "/dev/tty1" ("root"): Operation not permitted
[18:33:22.617] (EE) HELPER: Failed to take control of "/dev/tty1" ("root"): Operation not permitted
[18:33:22.695] (EE) HELPER: Failed to take control of "/dev/tty1" ("root"): Operation not permitted
[18:33:23.796] (EE) HELPER: Failed to take control of "/dev/tty1" ("root"): Operation not permitted
[18:33:23.880] (EE) HELPER: Failed to take control of "/dev/tty1" ("root"): Operation not permitted
[18:33:23.966] (EE) HELPER: Failed to take control of "/dev/tty1" ("root"): Operation not permitted
[18:33:24.038] (EE) HELPER: Failed to take control of "/dev/tty1" ("root"): Operation not permitted
[18:33:24.104] (EE) HELPER: Failed to take control of "/dev/tty1" ("root"): Operation not permitted

It pretty much continues for pages saying Operation not permitted on tty1, with no other lines. I believe all the text at the top was before the reboot, and the rest is after the reboot.

Re: Login screen broken after recent upgrade

Reply #6 –
I think the text is after the DE gets killed, to get the before you have to switch tty/ssh in the machine and copy the syslog manually.
If there is a conflict with the tty stuff starting too soon for sddm to like it now, try anyway to disable the services that end in: tty1 and tty7.

Re: Login screen broken after recent upgrade

Reply #7 –
The tty1 flashes so rapidly that it's hard to see what's being written out and cleared, but taking many, many photos I managed to get two sections of text that seem to indicate what's happening, but really both of them are just telling me that sddm-helper is crashing because it can't grab /dev/tty1, the only thing that's on /dev/tty1 is a standard console login prompt though.

I've attached both captured images.

Re: Login screen broken after recent upgrade

Reply #8 –
I managed to get sddm to stop crashing by copying the sddm.conf from a working fresh install to my old install, but once I did that I could no longer login at all, even when I went back to lxdm the sessions were all broken and wouldn't let me login. I think I'm just going to call that old install  toast and start over on this other install...

The one difference between this install and that is that it seems to be using X11 here, and opening it on tty7 and not tty1, but the old install's sddm.conf was so minimalistic that I'm not sure how to configure it to use tty7.

Code: [Select]
[XDisplay]
DisplayCommand=/usr/share/sddm/scripts/Xsetup

[General]
DisplayServer=wayland
GreeterEnvironment=QT_WAYLAND_SHELL_INTEGRATION=layer-shell

[Wayland]
CompositorCommand=kwin_wayland --no-lockscreen

Re: Login screen broken after recent upgrade

Reply #9 –
Ok, I managed to get my new install to break in the same way as the old install by adding that DisplayServer=wayland line to it.

If I disable agetty-tty1, then launch sddm with that wayland setting enabled, the whole computer locks up and has to be hard reset.

I guess some sddm change recently broke the wayland subsystem...