LightDM freezes on login attempt after light-locker

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LightDM freezes on login attempt after light-locker

18 March 2022, 16:23:15

hi, when screensaver puts off the screen light-locker lock the session, then, when i try to login, the first attempts fails and prompt the login screen again. its been working in the second try, but now the screen goes black after the second try. I have to switch to tty1 and kill light-locker, then I can still use the desktop but without locker.
reinstall the gdk-pixbuf2 package doesn't work to me.

i use open-rc, dont have OpenRC lightdm init script and i dont know if required.

Code: [Select]

#rc-service xdm status
 status: started

#pgrep -l light
2302 lightdm
2945 lightdm

thank you

Re: LightDM freezes on login attempt after light-locker

Reply #1 – 18 March 2022, 16:29:12

Quote from: tefenet – on 18 March 2022, 16:23:15

i use open-rc, dont have OpenRC lightdm init script and i dont know if required.
Code: [Select]
#rc-service xdm status
 status: started

#pgrep -l light
2302 lightdm
2945 lightdm
thank you

Yes, it is required. Get rid of xdm and xdm-openrc, then install lightdm-openrc, enable and activate the lightdm service, and reboot.

Re: LightDM freezes on login attempt after light-locker

Reply #2 – 18 March 2022, 22:01:07

Code: [Select]

pacman -S lightdm-openrc
---ask to remove displaymanager-openrc in conflict, say yes---
rc-update add lightdm default
rc-service lightdm start
reboot

the system is working but, when back after suspend in ram, lightdm prompts the login screen, with the same behavior.
screen goes black and freeze.

dmesg

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ACPI: PM: Waking up from system sleep state S3
[ 3399.013686] [drm] PCIE GART of 1024M enabled (table at 0x000000F400300000).
[ 3399.013706] amdgpu: smu version 27.24.00
[ 3399.013858] sd 1:0:0:0: [sda] Starting disk
[ 3399.014045] sd 6:0:0:0: [sdb] Starting disk
[ 3399.014097] xhci_hcd 0000:01:00.0: xHC error in resume, USBSTS 0x401, Reinit
[ 3399.014100] usb usb3: root hub lost power or was reset
[ 3399.014102] usb usb4: root hub lost power or was reset
[ 3399.014849] serial 00:04: activated
[ 3399.178811] [drm] UVD initialized successfully.
[ 3399.195862] r8169 0000:03:00.0 eth0: Link is Down
[ 3399.325547] ata3: SATA link down (SStatus 0 SControl 300)
[ 3399.326639] ata4: SATA link down (SStatus 0 SControl 300)
[ 3399.380124] [drm] VCE initialized successfully.
[ 3399.479359] ata7: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[ 3399.479826] ata7.00: configured for UDMA/133
[ 3399.492942] usb 3-7: reset low-speed USB device number 2 using xhci_hcd
[ 3399.536070] ata2: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[ 3399.539427] ata8: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 3399.556070] ata2.00: configured for UDMA/133
[ 3399.744429] ata8.00: configured for UDMA/100
[ 3400.122889] usb 3-10: reset low-speed USB device number 3 using xhci_hcd
[ 3400.539940] OOM killer enabled.
[ 3400.539944] Restarting tasks ... done.
[ 3400.542090] PM: suspend exit
[ 3400.542147] elogind[1825]: System resumed.
[ 3400.549817] elogind[1825]: New session c2 of user lightdm.
[ 3403.880203] r8169 0000:03:00.0 eth0: Link is Up - 1Gbps/Full - flow control off
[ 3418.578877] elogind[1825]: Removed session c2.
[ 3446.734683] elogind[1825]: New session 2 of user me-myself.

here i am in tty1 with that output
rc-service lightdm restart
and then, dmesg:

Code: [Select]

[ 3922.186482] elogind[1825]: Removed session 1.
[ 3923.192735] elogind[1825]: Existing logind session ID 2 used by new audit session, ignoring.
[ 3923.193015] elogind[1825]: New session c3 of user me-myself.

here again but the old session is lost

Re: LightDM freezes on login attempt after light-locker

Reply #3 – 19 March 2022, 08:54:33

Quote from: tefenet – on 18 March 2022, 22:01:07

the system is working but, when back after suspend in ram,

See here for hints on how to debug suspend issues:

https://wiki.archlinux.org/title/Power_management/Suspend_and_hibernate#Troubleshooting
https://01.org/blogs/rzhang/2015/best-practice-debug-linux-suspend/hibernate-issues

TL;DR: It's a Pandora's box of possible issues and solutions, most often having to do with video drivers interaction, but of course having all other possibilities open.

Re: LightDM freezes on login attempt after light-locker

Reply #4 – 20 March 2022, 01:55:16

Uninstall light-locker and use the default DE screen locker instead, for e.g. MATE it's mate-screensaver.

Re: LightDM freezes on login attempt after light-locker

Reply #5 – 11 April 2022, 11:10:18

Hello,

Quote

the system is working but, when back after suspend in ram, lightdm prompts the login screen, with the same behavior.
screen goes black and freeze.

Same for me.
I also have freezes with LightDM since a couple of days.
I removed light-locker that sort of solved the problem because now no lock program is called.
I have mate-screensaver installed but it will not called after resume from suspend.

Any ideas ?

Code: [Select]

System:
  Kernel: 5.15.32-1-lts x86_64 bits: 64 compiler: gcc v: 11.2.0
    Desktop: MATE 1.26.0 info: mate-panel wm: marco 1.26.0 vt: 7
    dm: LightDM 1.30.0 Distro: Artix Linux base: Arch Linux
Machine:
  Type: Laptop System: LENOVO product: 20ARS06C00 v: ThinkPad T440s
    serial: <superuser required> Chassis: type: 10 serial: <superuser required>
  Mobo: LENOVO model: 20ARS06C00 v: 0B98401 PRO
    serial: <superuser required> UEFI-[Legacy]: LENOVO v: GJETA4WW (2.54 )
    date: 03/27/2020
Battery:
  ID-1: BAT0 charge: 12.8 Wh (98.5%) condition: 13.0/23.2 Wh (56.0%)
    volts: 12.1 min: 11.1 model: SONY 45N1111 type: Li-poly serial: <filter>
    status: Not charging
  ID-2: BAT1 charge: 11.4 Wh (95.8%) condition: 11.9/23.5 Wh (50.9%)
    volts: 12.4 min: 11.4 model: LGC 45N1127 type: Li-ion serial: <filter>
    status: Not charging
CPU:
  Info: dual core model: Intel Core i7-4600U bits: 64 type: MT MCP
    smt: enabled arch: Haswell rev: 1 cache: L1: 128 KiB L2: 512 KiB L3: 4 MiB
  Speed (MHz): avg: 2121 high: 2163 min/max: 800/3300 cores: 1: 2163
    2: 2096 3: 2095 4: 2132 bogomips: 21550
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
Graphics:
  Device-1: Intel Haswell-ULT Integrated Graphics vendor: Lenovo driver: i915
    v: kernel bus-ID: 00:02.0 chip-ID: 8086:0a16 class-ID: 0300
  Device-2: Lite-On Integrated Camera type: USB driver: uvcvideo
    bus-ID: 2-8:4 chip-ID: 04ca:7035 class-ID: 0e02
  Display: x11 server: X.Org 21.1.3 compositor: marco v: 1.26.0 driver:
    loaded: intel unloaded: fbdev,modesetting,vesa resolution: 1600x900~60Hz
    s-dpi: 96
  OpenGL: renderer: Mesa Intel HD Graphics 4400 (HSW GT2)
    v: 4.6 Mesa 22.0.1 compat-v: 3.1 direct render: Yes
Audio:
  Device-1: Intel Haswell-ULT HD Audio vendor: Lenovo driver: snd_hda_intel
    v: kernel bus-ID: 00:03.0 chip-ID: 8086:0a0c class-ID: 0403
  Device-2: Intel 8 Series HD Audio vendor: Lenovo driver: snd_hda_intel
    v: kernel bus-ID: 00:1b.0 chip-ID: 8086:9c20 class-ID: 0403
  Sound Server-1: ALSA v: k5.15.32-1-lts running: yes
  Sound Server-2: sndio v: N/A running: no
  Sound Server-3: JACK v: 1.9.20 running: no
  Sound Server-4: PulseAudio v: 15.0 running: no
  Sound Server-5: PipeWire v: 0.3.49 running: yes
Network:
  Device-1: Intel Ethernet I218-LM vendor: Lenovo ThinkPad X240
    driver: e1000e v: kernel port: 3080 bus-ID: 00:19.0 chip-ID: 8086:155a
    class-ID: 0200
  IF: eth0 state: down mac: <filter>
  Device-2: Intel Wireless 7260 driver: iwlwifi v: kernel bus-ID: 03:00.0
    chip-ID: 8086:08b2 class-ID: 0280
  IF: wlan0 state: up mac: <filter>
  IF-ID-1: wwan0 state: down mac: <filter>
Bluetooth:
  Device-1: Intel Bluetooth wireless interface type: USB driver: btusb v: 0.8
    bus-ID: 2-7:3 chip-ID: 8087:07dc class-ID: e001
  Report: bt-adapter ID: hci0 rfk-id: 4 state: up address: <filter>
Drives:
  Local Storage: total: 238.47 GiB used: 198.05 GiB (83.0%)
  ID-1: /dev/sda vendor: Samsung model: MZ7TD256HAFV-000L9 size: 238.47 GiB
    speed: 6.0 Gb/s type: SSD serial: <filter> rev: 2L5Q scheme: MBR
Partition:
  ID-1: / size: 233.66 GiB used: 198.05 GiB (84.8%) fs: ext4 dev: /dev/dm-0
    mapped: luks-ff82d2e4-f194-44a0-825f-1a9c5d7bb18e
Swap:
  ID-1: swap-1 type: file size: 512 MiB used: 0 KiB (0.0%) priority: -2
    file: /.swapfile
Sensors:
  System Temperatures: cpu: 45.0 C mobo: N/A
  Fan Speeds (RPM): fan-1: 2950
Info:
  Processes: 259 Uptime: 4m wakeups: 3 Memory: 11.41 GiB
  used: 1.08 GiB (9.5%) Init: N/A v: N/A rc: OpenRC v: 0.44.10
  runlevel: default Compilers: gcc: 11.2.0 alt: 10 clang: 13.0.1 Packages:
  pacman: 1139 Shell: Bash v: 5.1.16 running-in: mate-terminal inxi: 3.3.12

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[2022-04-10T21:07:56+0200] [ALPM] upgraded jre-openjdk-headless (17.0.3.u3-1 -> 18-2)
[2022-04-10T21:07:56+0200] [ALPM] upgraded jre-openjdk (17.0.3.u3-1 -> 18-2)
[2022-04-10T21:07:56+0200] [ALPM] upgraded jdk-openjdk (17.0.3.u3-1 -> 18-2)

Re: LightDM freezes on login attempt after light-locker

Reply #6 – 12 April 2022, 09:04:43

The mate-screensaver is now kicking in after a reboot.
Problem solved.