[Nouveau] [Bug 105940] New: Display freeze caused by nouveau

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105940

            Bug ID: 105940
           Summary: Display freeze caused by nouveau
           Product: xorg
           Version: 7.7 (2012.06)
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: stefano.biagiotti at gtn.it
        QA Contact: xorg-team at lists.x.org

Created attachment 138676
  --> https://bugs.freedesktop.org/attachment.cgi?id=138676&action=edit
journalctl -k -b -1 --no-pager --no-hostname

On my Fedora 27 system, display often freezes unpredictably. Mouse and keyboard
don't work, but system is pingable and I can login using ssh.

I actually use kernel-4.15.14-300.fc27.x86_64,
xorg-x11-drv-nouveau-1.0.15-3.fc27.x86_64. 

I have two monitors connected to the display adapter. Hardware is (from lspci):
01:00.0 VGA compatible controller: NVIDIA Corporation GT215 [GeForce GT 320]
(rev a2)

Excerpt of journalctl (full journalctl in attachment):

apr 07 12:51:35 kernel: nouveau 0000:01:00.0: gr: PGRAPH TLB flush idle timeout
fail
apr 07 12:51:35 kernel: nouveau 0000:01:00.0: gr: PGRAPH_STATUS 00be0003 [BUSY
DISPATCH ENG2D RMASK TPC_RAST TPC_PROP TPC_TEX TPC_MP]
apr 07 12:51:35 kernel: nouveau 0000:01:00.0: gr: PGRAPH_VSTATUS0: 00000000 []
apr 07 12:51:35 kernel: nouveau 0000:01:00.0: gr: PGRAPH_VSTATUS1: 0000106d
[TPC_TEX TPC_MP]
apr 07 12:51:35 kernel: nouveau 0000:01:00.0: gr: PGRAPH_VSTATUS2: 00148000
[ENG2D]
apr 07 12:51:35 kernel: ------------[ cut here ]------------
apr 07 12:51:35 kernel: nouveau 0000:01:00.0: timeout
apr 07 12:51:35 kernel: WARNING: CPU: 3 PID: 1929 at
drivers/gpu/drm/nouveau/nvkm/engine/gr/g84.c:171 g84_gr_tlb_flush+0x2ce/0x360
[nouveau]
a

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