[Nouveau] Status of GF108GLM [NVS 5200M]

[Ilia Mirkin]

Yes, GF108 is Fermi (F = Fermi). Reclocking is currently not available
for that generation, unfortunately. You should be able to otherwise
use your GPU just fine, but I'm guessing it'll come up in the "07"
state when it powers on (in the state as-is it appears powered off,
which it will do automatically when not in use), which as you can see
is a fraction of the total GPU available perf.

For example `DRI_PRIME=1 glxinfo` should show you that it's using nouveau.

There's a very experimental branch that does enable reclocking for
Fermi at https://github.com/skeggsb/nouveau/commits/devel-clk .
However I believe it was only tested with a single GPU, and my testing
with an identical such GPU was negative. On the other hand, you don't
have a display hanging off the card, which greatly increases chances
of success. Feel free to join #nouveau on irc.freenode.net if you plan
on exploring this.

Cheers,

  -ilia

On Mon, Mar 30, 2020 at 3:22 AM Jesús J. Guerrero Botella
<jesus.guerrero.botella at gmail.com> wrote:
>
> Hello.
>
> I am not subscribed to the list, so, please, if I do anything wrong
> just let me know politely and I'll try to improve :)
>
> I just want to know if there's any branch of nouveau version that will
> work with this chip. lspci lists it as:
>
> 01:00.0 VGA compatible controller: NVIDIA Corporation GF108GLM [NVS
> 5200M] (rev a1)
>
> I think it's Fermi, but I am not sure. When I try to change pstate it says:
>
> # LC_ALL=C echo '0f' > /sys/kernel/debug/dri/1/pstate
> bash: echo: write error: Function not implemented
> # LC_ALL=C cat /sys/kernel/debug/dri/1/pstate
> 03: core 50 MHz memory 135 MHz
> 07: core 202 MHz memory 324 MHz
> 0f: core 672 MHz memory 1569 MHz
> AC: core 0 MHz memory 0 MHz
>
> It's worth noting that's a secondary gpu. I just use the intel chip
> for everyday's work, but I have some free days and I am trying to get
> the secondary one working and put it to good use, if possible.
>
> Thanks for any help you can provide. Please, CC me, as said, I am not
> subscribed to the list even though I'll try to keep an eye on this.
>
>
> --
> Jesús Guerrero Botella
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