Nouveau - Jun 2018 - libGL error messages

# lspci | grep ' VGA ' | cut -d" " -f 1 | xargs -i lspci -v -s
{}
00:05.0 VGA compatible controller: NVIDIA Corporation C51G [GeForce 6100] (rev
a2) (prog-if 00 [VGA controller])
        Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 16, NUMA node 0
        Memory at fc000000 (32-bit, non-prefetchable) [size=16M]
        Memory at d0000000 (64-bit, prefetchable) [size=256M]
        Memory at fb000000 (64-bit, non-prefetchable) [size=16M]
        [virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
        Capabilities: [48] Power Management version 2
        Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+
        Kernel driver in use: nouveau
        Kernel modules: nouveau

$ dpkg -l
ii  glx-alternative-mesa  0.8.3
ii  libegl-mesa0:amd64    18.1.0-1
un  libegl1-mesa          <none>
ii  libgl1-mesa-dri:amd64 18.1.0-1
ii  libgl1-mesa-glx:amd64 18.1.0-1
un  libgl1-mesa-swx11     <none>
ii  libglapi-mesa:amd64   18.1.0-1
un  libgles2-mesa         <none>
ii  libglu1-mesa:amd64    9.0.0-2.1
ii  libglx-mesa0:amd64    18.1.0-1
un  libwayland-egl1-mesa  <none>
ii  mesa-utils            8.4.0-1
un  mesag3                <none>
un  xlibmesa3             <none>

$ apt-cache policy libgl1-mesa-glx
libgl1-mesa-glx:
  Installed: 18.1.0-1
  Candidate: 18.1.0-1
  Version table:
 *** 18.1.0-1 990
        990 http://free.nchc.org.tw/debian experimental/main amd64 Packages
        100 /var/lib/dpkg/status
     18.0.5-1 500
        500 http://free.nchc.org.tw/debian unstable/main amd64 Packages

I.e., no 18.1.1 yet on Debian.

On Mon, Jun 11, 2018 at 1:32 PM, 積丹尼 Dan Jacobson <jidanni at jidanni.org>
wrote:
> # lspci | grep ' VGA ' | cut -d" " -f 1 | xargs -i lspci
-v -s {}
> 00:05.0 VGA compatible controller: NVIDIA Corporation C51G [GeForce 6100]
(rev a2) (prog-if 00 [VGA controller])
That's a NV4C or NV4E (i.e. nv4x).
> I.e., no 18.1.1 yet on Debian.
OK, well 18.1.0 is completely busted for those GPU's. Either upgrade
or downgrade. But don't use that release. This is the fix:

https://cgit.freedesktop.org/mesa/mesa/commit/?h=18.1&id=b6167e9640664b22d025813fb4061c91aae2af8c

  -ilia

>>>>> "IM" == Ilia Mirkin <imirkin at
alum.mit.edu> writes:
IM> OK, well 18.1.0 is completely busted for those GPU's. Either upgrade
IM> or downgrade. But don't use that release.

I did
[DOWNGRADE] libglapi-mesa:amd64 18.1.0-1 -> 18.0.5-1
[DOWNGRADE] libglx-mesa0:amd64 18.1.0-1 -> 18.0.5-1
and rebooted. Problem remains:
$ glxinfo > /dev/null
libGL error: failed to create dri screen
libGL error: failed to load driver: nouveau