[Nouveau] [Bug 91125] [NVE7] Nouveau read fault, locking up the gpu

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91125

--- Comment #2 from Jonathan Ryshpan <jonrysh at pacbell.net> ---
I hit this bug frequently, usually after some minor user action like closing a
window.  When it happens the screen freezes except for the cursor; when I look
at a console via ctrl/f2 and wait for a while (about 2 minutes) I see messages
like:
[20235.667444] nouveau E[plasmashell][16831] fail set_domain
[20235.667782] nouveau E[plasmashell][16831] validating bo list
[20235.668235] nouveau E[plasmachell][16831] valicate: -22

As soon as these messages appear, the desktop becomes mostly usable, but often
strange; the icons become weird and some system messages are corrupted.  In a
following comment (after I get the desktop back), I will attach a snapshot of
the weird desktop and today's journal file.

The system is difficult to use with this bug.

System is
  Amd-64 4-processor hardware
  Nvidia 9500GT Graphics Card
  Fedora-22 with all updates
  KDE Frameworks 5.12.0

Xorg -version
X.Org X Server 1.17.2
Release Date: 2015-06-16
X Protocol Version 11, Revision 0
Build Operating System:  4.0.4-202.fc21.x86_64 
Current Operating System: Linux amito 4.1.4-200.fc22.x86_64 #1 SMP Tue Aug 4
03:22:33 UTC 2015 x86_64
Kernel command line: BOOT_IMAGE=/vmlinuz-4.1.4-200.fc22.x86_64
root=/dev/mapper/fedora00-root ro rd.lvm.lv=fedora00/swap
rd.lvm.lv=fedora00/root rhgb quiet LANG=en_US.UTF-8
Build Date: 15 July 2015  08:16:41AM
Build ID: xorg-x11-server 1.17.2-2.fc22 
Current version of pixman: 0.32.6

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