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[LimCore <user.ubuntu@xxxxxxxxxxx>]

Public bug reported:

Binary package hint: xorg

On VT switch sometimes the computer freezes / GFX dies. Happened 3-4 times so far during 3 months.
Ubuntu 9.10, NVidia GeForce GTS 250, Quad Core, 64 bit.

The main error message(s)
Xorg[1662]: segfault at 8 ip 00007fa2aff0756f sp 00007fff1e5e1620 error 4 in nvidia_drv.so[7fa2afebd000+3ac000]
3: /usr/lib/xorg/modules/drivers//nvidia_drv.so(_nv001652X+0x21) [0x7fc04f421851]

*** Symptoms ***
This time upon more testing I noticed that the computer was in fact running,
but the GFX was dead.
alt+ctrl+f1 throw me to VT1 where I was able to login as root, but all the time the monitor was showing blank screen.

But the GFX card did detect I was in text-only mode, because in this
mode it always has fans running at maximum speed (which itself is
probably a bug in nvidia power saving, but that is another topic).

So - it's more like the GFX output died in a way that I was not able to
restore while trying (blindly) to killall -9 X nor /etc/init.d/gdm
restart.

At some point keyboard died (caps lock not reacting) but SysRq's seem to
fix that.

I have a feeling this *may* be related to RAM being full and computer
swapping during switching (but perhaps totally not).

*** Logs ***
There are pulse audio errors always when this crash occurs, but they may be just related to the VT switch, not to the crash happening sometimes on VT switch, dunno.

Feb  4 00:12:05 lcwood pulseaudio[12571]: ratelimit.c: 2 events suppressed
Feb  4 00:13:35 lcwood pulseaudio[12571]: ratelimit.c: 1 events suppressed
[...]
Feb  4 01:51:05 lcwood pulseaudio[12571]: ratelimit.c: 3 events suppressed
Feb  4 01:52:23 lcwood kernel: [478352.504858] Xorg[30169]: segfault at 8 ip 00007f3414c5f56f sp 00007fff534338e0 error 4 in nvidia_drv.so[7f3414c15000+3ac000]
Feb  4 01:52:28 lcwood pulseaudio[7305]: pid.c: Stale PID file, overwriting.
Feb  4 01:52:29 lcwood pulseaudio[7305]: main.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.NoServer: Failed to connect to socket /tmp/dbus-KFdminxjNi: Connection refused
Feb  4 01:52:40 lcwood pulseaudio[22644]: sink-input.c: Failed to create sink input: sink is suspended.
Feb  4 01:52:40 lcwood pulseaudio[22644]: sink-input.c: Failed to create sink input: sink is suspended.
Feb  4 01:52:45 lcwood pulseaudio[22644]: sink-input.c: Failed to create sink input: sink is suspended.
Feb  4 01:52:48 lcwood kernel: [478377.916054] Xorg[1662]: segfault at 8 ip 00007fa2aff0756f sp 00007fff1e5e1620 error 4 in nvidia_drv.so[7fa2afebd000+3ac000]
Feb  4 01:52:49 lcwood kernel: [478378.754355] npviewer.bin[1578]: segfault at d8fd3050 ip 00000000f64258fc sp 00000000d76bef50 error 4
Feb  4 01:52:49 lcwood kernel: [478378.754366] npviewer.bin[1291]: segfault at 14 ip 00000000f658396e sp 00000000e3195f90 error 4
Feb  4 01:52:49 lcwood kernel: [478378.756602] npviewer.bin[32677]: segfault at 14 ip 00000000f658396e sp 00000000dbb5ef90 error 4
Feb  4 01:52:49 lcwood kernel: [478378.756619] npviewer.bin[1649]: segfault at 14 ip 00000000f658396e sp 00000000e9577f90 error 4 in libflashplayer.so[f5efc000+993000]
Feb  4 01:52:49 lcwood kernel: [478378.756760]  in libflashplayer.so[f5efc000+993000]
Feb  4 01:52:49 lcwood kernel: [478378.756839]  in libflashplayer.so[f5efc000+993000]
Feb  4 01:52:49 lcwood kernel: [478378.756860]  in libflashplayer.so[f5efc000+993000]
Feb  4 01:53:02 lcwood kernel: [478390.958099] mtrr: base(0xd1000000) is not aligned on a size(0xe00000) boundary
Feb  4 01:53:02 lcwood bonobo-activation-server (rafal-7396): could not associate with desktop session: Failed to connect to socket /tmp/dbus-o2OejdYsgM: Connection refused


*** More logs and details ***

(Attached)

ProblemType: Bug
Architecture: amd64
Date: Thu Feb  4 02:18:44 2010
DistroRelease: Ubuntu 9.10
NonfreeKernelModules: nvidia
Package: xorg 1:7.4+3ubuntu10
ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.31-17-generic root=UUID=e5818be3-b3f1-4d34-b801-1d8728425e88 ro processor.max_cstate=2 nosplash crashkernel=384M-2G:64M,2G-:128M
ProcEnviron:
 LANGUAGE=
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-17.54-generic
RelatedPackageVersions:
 xserver-xorg 1:7.4+3ubuntu10
 libgl1-mesa-glx 7.6.0-1ubuntu4
 libdrm2 2.4.14-1ubuntu1
 xserver-xorg-video-intel 2:2.9.0-1ubuntu2.1
 xserver-xorg-video-ati 1:6.12.99+git20090929.7968e1fb-0ubuntu1
SourcePackage: xorg
Uname: Linux 2.6.31-17-generic x86_64
dmi.bios.date: 10/30/2008
dmi.bios.vendor: Intel Corp.
dmi.bios.version: CBQ4510H.86A.0063.2008.1030.1632
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: DQ45CB
dmi.board.vendor: Intel Corporation
dmi.board.version: AAE30148-206
dmi.chassis.type: 2
dmi.modalias: dmi:bvnIntelCorp.:bvrCBQ4510H.86A.0063.2008.1030.1632:bd10/30/2008:svn:pn:pvr:rvnIntelCorporation:rnDQ45CB:rvrAAE30148-206:cvn:ct2:cvr:
fglrx: Not loaded
system:
 distro:             Ubuntu
 architecture:       x86_64kernel:             2.6.31-17-generic

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug nvidia xorg

-- 
[Karmic][nvidia] VT switch cause segfault error 4 in nvidia_drv.so. Related to pulseaudio?
https://bugs.launchpad.net/bugs/516861
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