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Re: System halts randomly, audio playing and cursor moving for a while then crashes

Reply #45 –
Quote from: dpx – on
Probably obvious and you tried it already: did you try different proton variants? I sometimes have to downgrade until they pass some bump, then it is all safe to use latest again.

This crashed process

process_name: brave PID: 2176

is still confusing, I have steam running and I don't have it. Only reference I found is in

extra/profile-sync-daemon 1:6.50-1
    usr/share/psd/contrib/brave

but it must be something else.
It happens with native games as well like tf2 and even minecraft (with sodium obviously, it gives some sort of indium rendering error usually and exit code 6 though). It also doesn't happen with RE7 running through GE proton 10-4 (RE7's intro cutscene is completely broken with default proton, it's just a bunch of color bars in the car sequence, deck verified game btw). I'll try to run gmod through it.

Re: System halts randomly, audio playing and cursor moving for a while then crashes

Reply #46 –
Brave is a browser... 

Re: System halts randomly, audio playing and cursor moving for a while then crashes

Reply #47 –
Quote from: terrorbyte – on

nope, still crashes.

That's unfortunate. Things may seem random at first (bugs). So if it's possible, try to remember what you did before it happens. Make notes if you have to, and then try to find the pattern.

Question are you using a window manager by chance?

Re: System halts randomly, audio playing and cursor moving for a while then crashes

Reply #48 –
Quote from: clappingsnowdrop – on
Quote from: terrorbyte – on

nope, still crashes.

That's unfortunate. Things may seem random at first (bugs). So if it's possible, try to remember what you did before it happens. Make notes if you have to, and then try to find the pattern.

Question are you using a window manager by chance?
no, i'm using wayland kde.

Re: System halts randomly, audio playing and cursor moving for a while then crashes

Reply #49 –
Quote from: terrorbyte – on
Quote from: clappingsnowdrop – on


That's unfortunate. Things may seem random at first (bugs). So if it's possible, try to remember what you did before it happens. Make notes if you have to, and then try to find the pattern.

Question are you using a window manager by chance?
no, i'm using wayland kde.

Oh okay. If you were I was gonna ask you to do something as an experiment.

Re: System halts randomly, audio playing and cursor moving for a while then crashes

Reply #50 –
everything was fine until today. Now it freezes if I fullscreen youtube.
[  536.008916] ThreadPoolForeg[6656]: segfault at 1f575fda4548 ip 00007f32d8d32d20 sp 00007f32cb3fb490 error 4 in libcef.so[4531d20,7f32d6bed000+a36d000] likely on CPU 1 (core 1, socket 0)
dmesg when trying to launch steam.

Re: System halts randomly, audio playing and cursor moving for a while then crashes

Reply #51 –
Quote from: terrorbyte – on
everything was fine until today. Now it freezes if I fullscreen youtube.
[  536.008916] ThreadPoolForeg[6656]: segfault at 1f575fda4548 ip 00007f32d8d32d20 sp 00007f32cb3fb490 error 4 in libcef.so[4531d20,7f32d6bed000+a36d000] likely on CPU 1 (core 1, socket 0)
dmesg when trying to launch steam.

Have tried different browser/browser engines?
LTS kernel?

Re: System halts randomly, audio playing and cursor moving for a while then crashes

Reply #52 –
yeah, it's started happening very often again. Steam and discord randomly crash and even freeze the system(discord and QEMU had updated, I can post the pacman log if needed) and brave still freezes everything if youtube is fullscreened.
Quote from: clappingsnowdrop – on
Quote from: terrorbyte – on
everything was fine until today. Now it freezes if I fullscreen youtube.
[  536.008916] ThreadPoolForeg[6656]: segfault at 1f575fda4548 ip 00007f32d8d32d20 sp 00007f32cb3fb490 error 4 in libcef.so[4531d20,7f32d6bed000+a36d000] likely on CPU 1 (core 1, socket 0)
dmesg when trying to launch steam.

Have tried different browser/browser engines?
LTS kernel?
librewolf has the same issue  last time I checked. LTS and vanilla kernel do not fix it, in fact the vanilla kernel is unusable.
 

Re: System halts randomly, audio playing and cursor moving for a while then crashes

Reply #53 –
Quote from: Shoun2137 – on
[    0.000000] DMI: HP HP EliteDesk 705 G4 DM 65W/83E9, BIOS Q26 Ver. 02.14.01 10/16/2020
It is indeed the HP.

Anyway, I've had similar things happening to me when I freshly installed the Artix system exactly 1 year ago and it stopped doing that after I added `sysrq_always_enabled=1` as a kernel parameter setting, but im not sure if that's the case. Also, please try to temporarly remove amd-ucode just for test, refresh your mkinitcpio (sudo mkinitcpio -Pv) and then reboot and test if stuff like this happens again...


maybe =1 is overkill


Linux Magic System Request Key Hacks

Documentation for sysrq.c
What is the magic SysRq key?

It is a ‘magical’ key combo you can hit which the kernel will respond to regardless of whatever else it is doing, unless it is completely locked up.
How do I enable the magic SysRq key?

You need to say “yes” to ‘Magic SysRq key (CONFIG_MAGIC_SYSRQ)’ when configuring the kernel. When running a kernel with SysRq compiled in, /proc/sys/kernel/sysrq controls the functions allowed to be invoked via the SysRq key. The default value in this file is set by the CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE config symbol, which itself defaults to 1. Here is the list of possible values in /proc/sys/kernel/sysrq:

        0 - disable sysrq completely

        1 - enable all functions of sysrq

        >1 - bitmask of allowed sysrq functions (see below for detailed function description):

          2 =   0x2 - enable control of console logging level
          4 =   0x4 - enable control of keyboard (SAK, unraw)
          8 =   0x8 - enable debugging dumps of processes etc.
         16 =  0x10 - enable sync command
         32 =  0x20 - enable remount read-only
         64 =  0x40 - enable signalling of processes (term, kill, oom-kill)
        128 =  0x80 - allow reboot/poweroff
        256 = 0x100 - allow nicing of all RT tasks

You can set the value in the file by the following command:

echo "number" >/proc/sys/kernel/sysrq

The number may be written here either as decimal or as hexadecimal with the 0x prefix. CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE must always be written in hexadecimal.

Note that the value of /proc/sys/kernel/sysrq influences only the invocation via a keyboard. Invocation of any operation via /proc/sysrq-trigger is always allowed (by a user with admin privileges).
How do I use the magic SysRq key?

On x86 - You press the key combo ALT-SysRq-<command key>.

Note

Some keyboards may not have a key labeled ‘SysRq’. The ‘SysRq’ key is also known as the ‘Print Screen’ key. Also some keyboards cannot handle so many keys being pressed at the same time, so you might have better luck with press Alt, press SysRq, release SysRq, press <command key>, release everything.

On SPARC - You press ALT-STOP-<command key>, I believe.

On the serial console (PC style standard serial ports only)
    You send a BREAK, then within 5 seconds a command key. Sending BREAK twice is interpreted as a normal BREAK.
On PowerPC
    Press ALT - Print Screen (or F13) - <command key>, Print Screen (or F13) - <command key> may suffice.
On other
    If you know of the key combos for other architectures, please let me know so I can add them to this section.
On all

    write a character to /proc/sysrq-trigger. e.g.:

    echo t > /proc/sysrq-trigger

What are the ‘command’ keys?
Command    Function
b    Will immediately reboot the system without syncing or unmounting your disks.
c    Will perform a system crash by a NULL pointer dereference. A crashdump will be taken if configured.
d    Shows all locks that are held.
e    Send a SIGTERM to all processes, except for init.
f    Will call the oom killer to kill a memory hog process, but do not panic if nothing can be killed.
g    Used by kgdb (kernel debugger)
h    Will display help (actually any other key than those listed here will display help. but h is easy to remember :-)
i    Send a SIGKILL to all processes, except for init.
j    Forcibly “Just thaw it” - filesystems frozen by the FIFREEZE ioctl.
k    Secure Access Key (SAK) Kills all programs on the current virtual console. NOTE: See important comments below in SAK section.
l    Shows a stack backtrace for all active CPUs.
m    Will dump current memory info to your console.
n    Used to make RT tasks nice-able
o    Will shut your system off (if configured and supported).
p    Will dump the current registers and flags to your console.
q    Will dump per CPU lists of all armed hrtimers (but NOT regular timer_list timers) and detailed information about all clockevent devices.
r    Turns off keyboard raw mode and sets it to XLATE.
s    Will attempt to sync all mounted filesystems.
t    Will dump a list of current tasks and their information to your console.
u    Will attempt to remount all mounted filesystems read-only.
v    Forcefully restores framebuffer console
v    Causes ETM buffer dump [ARM-specific]
w    Dumps tasks that are in uninterruptable (blocked) state.
x    Used by xmon interface on ppc/powerpc platforms. Show global PMU Registers on sparc64. Dump all TLB entries on MIPS.
y    Show global CPU Registers [SPARC-64 specific]
z    Dump the ftrace buffer
0-9    Sets the console log level, controlling which kernel messages will be printed to your console. (0, for example would make it so that only emergency messages like PANICs or OOPSes would make it to your console.)
Okay, so what can I use them for?

Well, unraw(r) is very handy when your X server or a svgalib program crashes.

sak(k) (Secure Access Key) is useful when you want to be sure there is no trojan program running at console which could grab your password when you would try to login. It will kill all programs on given console, thus letting you make sure that the login prompt you see is actually the one from init, not some trojan program.

Important

In its true form it is not a true SAK like the one in a c2 compliant system, and it should not be mistaken as such.

It seems others find it useful as (System Attention Key) which is useful when you want to exit a program that will not let you switch consoles. (For example, X or a svgalib program.)

reboot(b) is good when you’re unable to shut down. But you should also sync(s) and umount(u) first.

crash(c) can be used to manually trigger a crashdump when the system is hung. Note that this just triggers a crash if there is no dump mechanism available.

sync(s) is great when your system is locked up, it allows you to sync your disks and will certainly lessen the chance of data loss and fscking. Note that the sync hasn’t taken place until you see the “OK” and “Done” appear on the screen. (If the kernel is really in strife, you may not ever get the OK or Done message...)

umount(u) is basically useful in the same ways as sync(s). I generally sync(s), umount(u), then reboot(b) when my system locks. It’s saved me many a fsck. Again, the unmount (remount read-only) hasn’t taken place until you see the “OK” and “Done” message appear on the screen.

The loglevels 0-9 are useful when your console is being flooded with kernel messages you do not want to see. Selecting 0 will prevent all but the most urgent kernel messages from reaching your console. (They will still be logged if syslogd/klogd are alive, though.)

term(e) and kill(i) are useful if you have some sort of runaway process you are unable to kill any other way, especially if it’s spawning other processes.

“just thaw it(j)” is useful if your system becomes unresponsive due to a frozen (probably root) filesystem via the FIFREEZE ioctl.
Sometimes SysRq seems to get ‘stuck’ after using it, what can I do?

That happens to me, also. I’ve found that tapping shift, alt, and control on both sides of the keyboard, and hitting an invalid sysrq sequence again will fix the problem. (i.e., something like alt-sysrq-z). Switching to another virtual console (ALT+Fn) and then back again should also help.
I hit SysRq, but nothing seems to happen, what’s wrong?

There are some keyboards that produce a different keycode for SysRq than the pre-defined value of 99 (see KEY_SYSRQ in include/uapi/linux/input-event-codes.h), or which don’t have a SysRq key at all. In these cases, run showkey -s to find an appropriate scancode sequence, and use setkeycodes <sequence> 99 to map this sequence to the usual SysRq code (e.g., setkeycodes e05b 99). It’s probably best to put this command in a boot script. Oh, and by the way, you exit showkey by not typing anything for ten seconds.
I want to add SysRQ key events to a module, how does it work?

In order to register a basic function with the table, you must first include the header include/linux/sysrq.h, this will define everything else you need. Next, you must create a sysrq_key_op struct, and populate it with A) the key handler function you will use, B) a help_msg string, that will print when SysRQ prints help, and C) an action_msg string, that will print right before your handler is called. Your handler must conform to the prototype in ‘sysrq.h’.

After the sysrq_key_op is created, you can call the kernel function register_sysrq_key(int key, struct sysrq_key_op *op_p); this will register the operation pointed to by op_p at table key ‘key’, if that slot in the table is blank. At module unload time, you must call the function unregister_sysrq_key(int key, struct sysrq_key_op *op_p), which will remove the key op pointed to by ‘op_p’ from the key ‘key’, if and only if it is currently registered in that slot. This is in case the slot has been overwritten since you registered it.

The Magic SysRQ system works by registering key operations against a key op lookup table, which is defined in ‘drivers/tty/sysrq.c’. This key table has a number of operations registered into it at compile time, but is mutable, and 2 functions are exported for interface to it:

register_sysrq_key and unregister_sysrq_key.

Of course, never ever leave an invalid pointer in the table. I.e., when your module that called register_sysrq_key() exits, it must call unregister_sysrq_key() to clean up the sysrq key table entry that it used. Null pointers in the table are always safe. :)

If for some reason you feel the need to call the handle_sysrq function from within a function called by handle_sysrq, you must be aware that you are in a lock (you are also in an interrupt handler, which means don’t sleep!), so you must call __handle_sysrq_nolock instead.
When I hit a SysRq key combination only the header appears on the console?

Sysrq output is subject to the same console loglevel control as all other console output. This means that if the kernel was booted ‘quiet’ as is common on distro kernels the output may not appear on the actual console, even though it will appear in the dmesg buffer, and be accessible via the dmesg command and to the consumers of /proc/kmsg. As a specific exception the header line from the sysrq command is passed to all console consumers as if the current loglevel was maximum. If only the header is emitted it is almost certain that the kernel loglevel is too low. Should you require the output on the console channel then you will need to temporarily up the console loglevel using alt-sysrq-8 or:

echo 8 > /proc/sysrq-trigger

Remember to return the loglevel to normal after triggering the sysrq command you are interested in.
I have more questions, who can I ask?

Just ask them on the linux-kernel mailing list:
    [email protected]

Credits

Written by Mydraal <[email protected]> Updated by Adam Sulmicki <[email protected]> Updated by Jeremy M. Dolan <[email protected]> 2001/01/28 10:15:59 Added to by Crutcher Dunnavant <[email protected]>

Re: System halts randomly, audio playing and cursor moving for a while then crashes

Reply #54 –
funny story, brave failed an update and I can't use it.
I have to use librewolf now and that fixed it. No more crashes or hangs. It seems like having brave open caused EVERYTHING.

Re: System halts randomly, audio playing and cursor moving for a while then crashes

Reply #55 –
Quote from: terrorbyte – on
funny story, brave failed an update and I can't use it.
I have to use librewolf now and that fixed it. No more crashes or hangs. It seems like having brave open caused EVERYTHING.


your error message SAID that.  Seeing is believing..

Re: System halts randomly, audio playing and cursor moving for a while then crashes

Reply #56 –
Quote from: mrbrklyn – on
Quote from: terrorbyte – on
funny story, brave failed an update and I can't use it.
I have to use librewolf now and that fixed it. No more crashes or hangs. It seems like having brave open caused EVERYTHING.


your error message SAID that.  Seeing is believing..
trve lol, I didn't think brave could cause all of this but it did.

Re: System halts randomly, audio playing and cursor moving for a while then crashes

Reply #57 –
nvm, it started again, l4d2 (vulkan) keeps crashing after a bit and steam too right before it. Seems like mesa is really broken and brave was just really affected.

Re: System halts randomly, audio playing and cursor moving for a while then crashes

Reply #58 –
Great, just great. Now discord can't even launch and steam crashes for no reason. I have made no changes to the system since post 54  other than installing ncdu and gotop (no dependencies).

Re: System halts randomly, audio playing and cursor moving for a while then crashes

Reply #59 –
Quote from: terrorbyte – on
Great, just great. Now discord can't even launch and steam crashes for no reason. I have made no changes to the system since post 54  other than installing ncdu and gotop (no dependencies).

A bit of great news, is that we're seeing a pattern here. Unconfirmed, but a pattern regardless. Discord and Brave are Chromium based programs.

Steam is also based off of Chromium, but since you've tried my solution before. I gotta know, do you still have HA (hardware acceleration) disabled off of Steam?

I searched the net and says you can disable HA on Brave, but I'm not sure on Discord. I would recommend using Firefox-based browsers to login to Discord for now.