[Bug 92971] KDE plasma locks randomly due to crash of nouveau driver

* [Bug 92971] KDE plasma locks randomly due to crash of nouveau driver
@ 2015-11-16 20:20 bugzilla-daemon
  2015-11-16 20:24 ` bugzilla-daemon
  2015-11-16 20:25 ` bugzilla-daemon
  0 siblings, 2 replies; 6+ messages in thread
From: bugzilla-daemon @ 2015-11-16 20:20 UTC (permalink / raw)
  To: dri-devel

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https://bugs.freedesktop.org/show_bug.cgi?id=92971

            Bug ID: 92971
           Summary: KDE plasma locks randomly due to crash of nouveau
                    driver
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/other
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: conde.philippe@skynet.be

Created attachment 119714
  --> https://bugs.freedesktop.org/attachment.cgi?id=119714&action=edit
extract of journalctl with nouveau crash

Last opensuse tumbleweed version:
I'm using the nouveau driver with the kernel 4.3.0-1-xen (geeko@buildhost) (gcc
version 5.2.1 20151008 [gcc-5-branch revision 228597.

My hardware is a HP proliant ML350p Gen8 with an Nvidia quadro 4000 video card
with  2 screens (DVI + DP1) using a extended layout; 

I have some locks occurring randomly when 
- loading some programs (Yast, Xine; Shishen etc...)
- or starting a video in the browser (seamonkey  on www. youtube or news site
(www.lesoir.be, www.lemonde.fr)
- reactivating a session (lock occurs when moving mouse or pressing keyboard)

the desktop freezes or is bad redraw and locks thereafter.Keyboard is inactive
and I must do a hard reset.
Some time the hardware indicate a non maskable interrupt
This lock occurs randomly since kernel 4.2

In journalctl I see a crash of the nouveau driver.

Here the output when locking by loading Yast:
Nov 15 10:36:29 hpprol2 audit[25865]: USER_START pid=25865 uid=1000 auid=1000
ses=3 msg='op=PAM:session_open
grantors=pam_limits,pam_unix,pam_umask,pam_systemd,pam_gnome_keyring,pam_env,pam_xauth
acct="root" 
Nov 15 10:36:29 hpprol2 kernel: nouveau 0000:0a:00.0: fifo: PBDMA0: 80000000 []
ch 30 [007e6ab000 y2controlcenter[25892]] subc 0 mthd 0000 data 00000000
Nov 15 10:36:29 hpprol2 kernel: nouveau 0000:0a:00.0: fifo: PBDMA0: 80040000 []
ch 30 [007e6ab000 y2controlcenter[25892]] subc 0 mthd 0000 data 00000000
Nov 15 10:36:29 hpprol2 kernel: nouveau 0000:0a:00.0: fifo: PBDMA0: 80000000 []
ch 30 [007e6ab000 y2controlcenter[25892]] subc 0 mthd 0000 data 00000000
Nov 15 10:36:29 hpprol2 kernel: nouveau 0000:0a:00.0: fifo: read fault at
0000000000 engine 07 [PFIFO] client 06 [PFIFO] reason 00 [PT_NOT_PRESENT] on
channel 30 [007e6ab000 y2controlcenter[25892]]
Nov 15 10:36:29 hpprol2 kernel: nouveau 0000:0a:00.0: fifo: fifo engine fault
on channel 30, recovering...
Nov 15 10:36:37 hpprol2 kernel: nouveau 0000:0a:00.0: DRM: GPU lockup -
switching to software fbcon

I'll attach a long extract of journalctl after a lock occuring when
reactivating a session

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