[Nouveau] Should I expect nouveau on 4.6 to work on a GM206?

[Ilia Mirkin]

On Sun, May 29, 2016 at 3:07 PM, Andy Lutomirski <luto at kernel.org> wrote:
> On Sat, May 28, 2016 at 5:48 PM, Ilia Mirkin <imirkin at alum.mit.edu> wrote:
>> Do you have mesa 11.2 or later? GM20x support was only added in mesa 11.2.
>>
>
> I just upgraded to 11.2.  I'm getting errors like this in the log:
>
> [ 5383.723240] nouveau 0000:09:00.0: fifo: read fault at 0000011000
> engine 07 [PBDMA0] client 06 [HOST] reason 00 [PDE] on channel -1
> [007f9ed000 unknown]
> [ 5398.722676] nouveau 0000:09:00.0: systemd-logind[30778]: failed to
> idle channel 2 [systemd-logind[30778]]
> [ 5413.722853] nouveau 0000:09:00.0: systemd-logind[30778]: failed to
> idle channel 2 [systemd-logind[30778]]
>
> and the display output in general is unreliable enough that I'm having
> trouble telling whether the performance is remotely reasonable.

If you're having trouble telling, that means it's not :) The error you
pasted is quite odd. Was there anything in the log before those
messages? If there's no channel associated, that means that it's the
background copying between vram and sysmem? Not sure.

Note that with maxwell we have yet to add EXA support to
xf86-video-nouveau, so you're ending up with GLAMOR (and Ben and I
disagree on whether EXA support should be added in the first place).
There was also an issue that glamor was hitting with nouveau which
appears to have dissipated, either due to a change in nouveau or a
change in glamor. So you might consider upgrading to Xorg 1.18.3 (as
glamor is part of X).

FWIW a few other people have been using GM20x without incident, but
this can all be very sensitive to your desktop/etc. Lots of things
like to use GL nowadays - I stick to a more classic desktop - no
compositor, simple window manager, etc.

  -ilia