[Bug 98138] New: Random Freeze - nouveau 0000:01:00.0: fifo: SCHED_ERROR 0a [CTXSW_TIMEOUT] - bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ

From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [Bug 98138] New: Random Freeze - nouveau 0000:01:00.0: fifo: SCHED_ERROR 0a [CTXSW_TIMEOUT]
Date: Fri, 07 Oct 2016 05:16:03 +0000	[thread overview]
Message-ID: <bug-98138-8800@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=98138

            Bug ID: 98138
           Summary: Random Freeze - nouveau 0000:01:00.0: fifo:
                    SCHED_ERROR 0a [CTXSW_TIMEOUT]
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: stefan.kelemen-Mmb7MZpHnFY@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

Since im Using KDE Plasma, i have the Problem the system is Freezing randomly
over the when the Desktop is locked

kern.log when the problem begins

Oct  5 02:28:06 druuhl kernel: [73499.905933] nouveau 0000:01:00.0: fifo:
SCHED_ERROR 0a [CTXSW_TIMEOUT]
Oct  5 02:28:06 druuhl kernel: [73499.905939] nouveau 0000:01:00.0: fifo: sw
engine fault on channel 5, recovering...
Oct  5 02:28:08 druuhl kernel: [73501.905656] nouveau 0000:01:00.0: fifo:
runlist 0 update timeout
Oct  5 02:28:10 druuhl kernel: [73504.200746] nouveau 0000:01:00.0: fifo:
SCHED_ERROR 0a [CTXSW_TIMEOUT]
Oct  5 02:28:15 druuhl kernel: [73508.495393] nouveau 0000:01:00.0: fifo:
SCHED_ERROR 0a [CTXSW_TIMEOUT]
Oct  5 02:28:19 druuhl kernel: [73512.790100] nouveau 0000:01:00.0: fifo:
SCHED_ERROR 0a [CTXSW_TIMEOUT]
Oct  5 02:28:23 druuhl kernel: [73517.084810] nouveau 0000:01:00.0: fifo:
SCHED_ERROR 0a [CTXSW_TIMEOUT]
Oct  5 02:28:27 druuhl kernel: [73521.379625] nouveau 0000:01:00.0: fifo:
SCHED_ERROR 0a [CTXSW_TIMEOUT]

when the Desktop is unlocked over night there is no freeze. Some Discussion
about this describe problems with Fullscreen Application like Libreoffice, this
would match with my research.

Im Using Neptune Linux - Debian with KDE Plasma and i have the Problem with
Kernel 4.4.13 to 4.4.20.

Linux druuhl 4.4.20 #8 SMP PREEMPT Thu Sep 8 10:25:38 CEST 2016 x86_64
GNU/Linux
kdeplasma 5.6 to 5.8
xserver-xorg-video-nouveau 1.0.12
xorg 7.7

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