I'm running Ubuntu GNOME Remix 12.10 with one modification: I've installed kernel 3.8.0-030800rc7-generic from the MainlineKernels repository (by manually downloading and installing the debs). Why? nouveau pre-3.7.6 (including ALL of 3.6 and previous) has a nasty bug where it can't handle NV4E (GeForce 6100/6150) GPUs at all. Meaning, completely useless display, at best. Usually the system just straight up hangs somewhere during boot, leaving garbage on the screen. (see: https://bugs.freedesktop.org/show_bug.cgi?id=46557 ) I figured, if I have to install on Quantal a kernel only meant for Raring, I might as well use the latest.
I'm not using any PPAs, just the standard repositories for everything else.
So my system is usable, except this bizarre issue I can't figure out. This has happened three separate times now. First, Xorg crashes:
[ 10119.123] (II) AIGLX: Suspending AIGLX clients for VT switch [ 10119.123] (II) NOUVEAU(0): NVLeaveVT is called. [ 10120.480] (II) Open ACPI successful (/var/run/acpid.socket) [ 10120.480] (II) AIGLX: Resuming AIGLX clients after VT switch [ 10120.480] (II) NOUVEAU(0): NVEnterVT is called. [ 10120.600] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found [ 18070.500] (EE) [ 18070.500] (EE) Backtrace: [ 18070.500] (EE) 0: /usr/bin/X (xorg_backtrace+0x36) [0x7fd4c64d1b76] [ 18070.500] (EE) 1: /usr/bin/X (0x7fd4c6329000+0x1ac9a9) [0x7fd4c64d59a9] [ 18070.501] (EE) 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fd4c564f000+0xfcb0) [0x7fd4c565ecb0] [ 18070.501] (EE) 3: /lib/x86_64-linux-gnu/libc.so.6 (0x7fd4c42b3000+0x9198b) [0x7fd4c434498b] [ 18070.501] (EE) 4: /usr/lib/xorg/modules/libexa.so (0x7fd4c22d3000+0x584e) [0x7fd4c22d884e] [ 18070.501] (EE) 5: /usr/lib/xorg/modules/libexa.so (0x7fd4c22d3000+0x5d03) [0x7fd4c22d8d03] [ 18070.501] (EE) 6: /usr/lib/xorg/modules/libexa.so (0x7fd4c22d3000+0x851a) [0x7fd4c22db51a] [ 18070.501] (EE) 7: /usr/lib/xorg/modules/libexa.so (0x7fd4c22d3000+0x50e1) [0x7fd4c22d80e1] [ 18070.501] (EE) 8: /usr/bin/X (0x7fd4c6329000+0xe26cf) [0x7fd4c640b6cf] [ 18070.501] (EE) 9: /usr/bin/X (ChangeWindowAttributes+0x244) [0x7fd4c63ac3b4] [ 18070.502] (EE) 10: /usr/bin/X (0x7fd4c6329000+0x4ff4d) [0x7fd4c6378f4d] [ 18070.502] (EE) 11: /usr/bin/X (0x7fd4c6329000+0x55a91) [0x7fd4c637ea91] [ 18070.502] (EE) 12: /usr/bin/X (0x7fd4c6329000+0x4456a) [0x7fd4c636d56a] [ 18070.502] (EE) 13: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xed) [0x7fd4c42d476d] [ 18070.502] (EE) 14: /usr/bin/X (0x7fd4c6329000+0x448ad) [0x7fd4c636d8ad] [ 18070.502] (EE) [ 18070.502] (EE) Segmentation fault at address 0x0 [ 18070.502] Fatal server error: [ 18070.503] Caught signal 11 (Segmentation fault). Server aborting [ 18070.503] [ 18070.503] (EE) Please consult the The X.Org Foundation support at http://wiki.x.org for help. [ 18070.503] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information. [ 18070.503] (EE)
The NVLeaveVT/NVEnterVT makes me think it's trying to suspend and failing, but when I manually suspend (with Fn-F5 or just picking "Suspend" from the menu inside GNOME) it goes down and comes back up with no problems at all.
And here's where it gets weird: gdm will diligently restart X and bring up its login screen. But when I login, suddenly GNOME has switched to Chinese! This clears itself up after a reboot, but... what a bizarre behavior. I wasn't even aware I had Chinese localizations installed!
To clarify, this has NEVER happened when I was physically at the computer, only when I'm in another room, and come back to find the laptop sitting at the login screen.
I have a hypothesis I'm going to test: it's somehow triggered by the screen being off when the system attempts to suspend. But how would I fix or work around that?