[Bug 105425] 3D & games produce periodic GPU crashes (Radeon R7 370)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105425

--- Comment #34 from MirceaKitsune <sonichedgehog_hyperblast00 at yahoo.com> ---
(In reply to iive from comment #33)

Ahhh... you've reminded me of a detail that I have in fact noticed but forgot
to mention: After the machine freezes and becomes completely unresponsive, some
keyboard leds will indeed turn off after roughly 10 seconds. I only noticed
this because I currently have a backlit keyboard that has the lighting
controlled by the Scroll Lock LED... I saw that a few seconds after the crash,
the keyboard lighting always turns itself off.

I cannot connect the computers with a serial cable: I think the motherboards
are too modern to have a serial port, and they're at a far distance in opposite
rooms. Both computers are connected to the same home router via LAN cables
though, and can communicate through local IP... so net console sounds like a
good idea, but I've never heard of it before so I'll have to look this up.

Your sysrq suggestion seems to have worked! I first did this:

echo 1 > /proc/sys/kernel/sysrq

Then I pressed 'Alt + PrintScreen + H'. Now dmesg shows me:

[265102.938475] sysrq: SysRq : HELP : loglevel(0-9) reboot(b) crash(c)
terminate-all-tasks(e) memory-full-oom-kill(f) kill-all-tasks(i)
thaw-filesystems(j) sak(k) show-backtrace-all-active-cpus(l)
show-memory-usage(m) nice-all-RT-tasks(n) poweroff(o) show-registers(p)
show-all-timers(q) unraw(r) sync(s) show-task-states(t) unmount(u) force-fb(V)
show-blocked-tasks(w) dump-ftrace-buffer(z)

I assume that after the crash, I should first use it to test REISUB?

And here is the output of the kernel features you said to check. If they're not
there, I'm out of luck on this one, as I don't know how to compile my own
kernel and can't risk breaking my machine with dangerous tests.

mircea at linux-qz0r:~> zgrep CONFIG_NETCONSOLE /proc/config.gz
CONFIG_NETCONSOLE=m
CONFIG_NETCONSOLE_DYNAMIC=y
mircea at linux-qz0r:~> zgrep SERIAL_8250_CONSOLE /proc/config.gz
CONFIG_SERIAL_8250_CONSOLE=y

Lastly I'll try glxgears without vsync for a few hours in the next days: I have
to leave my computer locked while I'm away from home or sleeping, but can leave
it on for roughly 3 hours of the day while I'm around but AFK. I should note
that I tried running Xonotic without vsync, and that seems to have made
absolutely no difference. Also this likely isn't network related, I always test
in a local match with bots and not online multiplayer.

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