[Bug 105813] New: GT710 locks up X and spams logs

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=105813

            Bug ID: 105813
           Summary: GT710 locks up X and spams logs
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: zarniwhoop-XZoyATsUNX5Wk0Htik3J/w@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

I recently bought a low-end Ryzen and needed a basic video card with a vga
connector, so I bought a GT710 (GK208B). The system is intended to be used for
compiling/measuring builds from source, but it is almost unusable in X because
of video errors which cause the desktop to lockup (no mouse clicks or keyboard,
MagicSysRQ works).

Packages: linux-4.15.12, gcc-7.3.0, glibc-2.27, mesa-17.3.7,
xorg-server-1.19.6, nouveau-1.0.15.

So far this bug has bitten me twice. The first time I had built xorg and was
running fluxbox while I built the rest of my desktop. I had 4 or 5 urxvt terms
open across two desktops, nothing else, running a compile in one. I had been
reading mail on the second desktop, then tried to go back to the first to check
progress.

After waiting a little I rebooted.  The system log had what I thought was a lot
of output (about 50000 lines, I think), starting
Mar 28 16:39:00 origin kernel: [41644.858087] nouveau 0000:26:00.0: fifo:
FB_FLUSH_TIMEOUT
Mar 28 16:40:02 origin kernel: [41707.692180] nouveau 0000:26:00.0: fifo:
FB_FLUSH_TIMEOUT
Mar 28 16:40:02 origin kernel: [41707.692215] nouveau 0000:26:00.0: fifo:
CHSW_ERROR 00000001
Mar 28 16:40:02 origin kernel: [41707.692264] nouveau 0000:26:00.0: fifo:
CHSW_ERROR 00000003
Mar 28 16:40:16 origin kernel: [41720.825498] nouveau 0000:26:00.0: fifo:
CHSW_ERROR 00000002
Mar 28 16:40:16 origin kernel: [41720.825502] nouveau 0000:26:00.0: fifo:
FB_FLUSH_TIMEOUT
Mar 28 16:40:16 origin kernel: [41720.826544] nouveau 0000:26:00.0: fifo:
CHSW_ERROR 00000002
Mar 28 16:40:16 origin kernel: [41720.827590] nouveau 0000:26:00.0: fifo:
CHSW_ERROR 00000002
Mar 28 16:40:16 origin kernel: [41720.828639] nouveau 0000:26:00.0: fifo:
CHSW_ERROR 00000002

(similar CHSW ERROR messages after that).

Because of the other problem, which I will post after this, I then tried using
hte modesetting driver in Xorg. But I got a similar, bigger, report (left it
trying to compile, came back to find an xscreensaver screen, when I rebooted I
had almost 1.3 million lines in the log:
Mar 29 22:06:59 origin kernel: [ 2732.695254] nouveau 0000:26:00.0: fifo:
CHSW_ERROR 00000002
Mar 29 22:06:59 origin kernel: [ 2732.695259] nouveau 0000:26:00.0: fifo:
FB_FLUSH_TIMEOUT
Mar 29 22:06:59 origin kernel: [ 2732.696296] nouveau 0000:26:00.0: fifo:
CHSW_ERROR 00000002
Mar 29 22:06:59 origin kernel: [ 2732.697342] nouveau 0000:26:00.0: fifo:
CHSW_ERROR 00000002
Mar 29 22:06:59 origin kernel: [ 2732.698390] nouveau 0000:26:00.0: fifo:
CHSW_ERROR 00000002
...
Mar 29 22:29:40 origin kernel: [ 4093.784821] nouveau 0000:26:00.0: fifo:
CHSW_ERROR 00000002
Mar 29 22:29:40 origin kernel: [ 4093.784977] sysrq: SysRq : Emergency Sync
Mar 29 22:29:40 origin kernel: [ 4093.785868] nouveau 0000:26:00.0: fifo:
CHSW_ERROR 00000002
Mar 29 22:29:40 origin kernel: [ 4093.786915] nouveau 0000:26:00.0: fifo:
CHSW_ERROR 00000002
Mar 29 22:29:40 origin kernel: [ 4093.787963] nouveau 0000:26:00.0: fifo:
CHSW_ERROR 00000002
Mar 29 22:29:40 origin kernel: [ 4093.789011] nouveau 0000:26:00.0: fifo:
CHSW_ERROR 00000002
Mar 29 22:29:40 origin kernel: [ 4093.790058] nouveau 0000:26:00.0: fifo:
CHSW_ERROR 00000002
Mar 29 22:29:40 origin kernel: [ 4093.791106] nouveau 0000:26:00.0: fifo:
CHSW_ERROR 00000002
Mar 29 22:29:40 origin kernel: [ 4093.792154] nouveau 0000:26:00.0: fifo:
CHSW_ERROR 00000002
Mar 29 22:29:40 origin kernel: [ 4093.793201] nouveau 0000:26:00.0: fifo:
CHSW_ERROR 00000002
 (and then a few more before it rebooted).

Because this is a new machine, I have no idea if this is a regression or has
always been like this.

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