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

[Andy Lutomirski]

On Sun, May 29, 2016 at 12:22 PM, Ilia Mirkin <imirkin at alum.mit.edu> wrote:
> 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.

Don't get too excited yet.  In the process of upgrading mesa, I
managed to boot 4.5 without noticing.  I'll post back later today with
actual valid test results.

>
> 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.

This is GNOME 3 on Fedora 24 Beta.

--Andy