From the testing, so far it sounds like it can be reproduced outside
unity, and the dmesg errors mean that it's the driver failing not unity.
Closing out the unity tasks.
Also, it appears people see it whether using one or two monitors, so
this suggests its not a multi-monitor issue.
** Changed
@alberto, any update on the issue? thx.
** Changed in: unity
Status: Confirmed = Triaged
** Changed in: unity (Ubuntu)
Status: Confirmed = Triaged
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** Tags added: multimonitor
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https://bugs.launchpad.net/bugs/882710
Title:
Dual monitors black out and session freezes, might be linked to
switching workspaces
To manage
After today's kernal update, the problem still persists.
Jan 20 06:07:30 alan-desktop kernel: [ 910.375483] Xorg[1310]: segfault at
b56b5000 ip b50fd3e1 sp bf864580 error 7 in nvidia_drv.so[b5024000+62a000]
I also noticed a message in the log that there was no NVIDIA graphics
adapter found:
Booted in GNOME classic, went back to dual monitors. Worked for a day
and then crashed again, pretty quickly after I started listening to an
audio podcast in Banshee.
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Palewire:
I'm not getting the same kernal messages, but still have the issue.
I've noticed that moving to the gnome3 shell has significantly reduced
my problem. However, if I use Unity, the problem is crippling.
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Even with one monitor, this continues to happen to me every couple days
at work. This morning, I wasn't even watching video, just use my web
browser, and I had it black out. Here is a snippet from the kernel log
that I think is around the time of the crash.
Jan 17 11:13:37 conrad kernel:
Happened in a little bit later in the day. This is a real drag. Is there
anything I can do? Here's the kernel log again.
Jan 17 12:54:51 conrad kernel: [ 6051.296870] hda-intel: spurious response
0x0:0x0, last cmd=0x470e00
Jan 17 12:54:51 conrad kernel: [ 6051.296870] hda-intel: spurious
Similar kernel dumps are reported in these bugs:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/536699
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/611334
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Here is my kernal log, if it helps.
** Attachment added: Kernal Log
https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/882710/+attachment/2666340/+files/kern.log
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I just experienced the bug. Here were the conditions:
Under Gnome:
1. Libreoffice document open.
2. Firefox open.
3. Clementine open.
Went to the left corner to access activites and as the expose-like
effect began to give me access to Windows and Applications the monitors
went black and a hard
Just to add: I have the same problem, with the same crippling effects:
my displays will randomly go into powersave (turn completely black) and
cannot be awakened through the mouse or keyboard input. The only
solution is a hard reboot.
I have a System 76 Mad Dog:
1 GB nVidia GeForce GT430
4 GB - 2
Two additional points:
1. I can reproduce this under Gnome as well as Unity. Although it
happens with more frequency with Unity.
2. I can also echo Palewire's claim that this has happened during
streaming media. While watching an embedded video, for example. Also,
while playing/streaming music
Since first encountering this bug, I've limited myself to working on a
single monitor. When I do this, the bug happens much less frequently,
but it still does occur once every couple days. And it seems to happen
when I have a video podcast going in Banshee. Last week I was watching
the CBS Evening
** Summary changed:
- Dual monitors randomly black out, might be linked to switching workspaces
+ Dual monitors black out and session freezes, might be linked to switching
workspaces
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