[Nouveau] NOUVEAU_LEGACY_CTX_SUPPORT Fan Speed

[Mar Mel]

 Sure:
$ lspci -nn -d 10de:
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GT200 [GeForce GTX 260] [10de:05e2] (rev a1)

    On Saturday, June 22, 2019, 2:19:31 PM EDT, Ilia Mirkin <imirkin at alum.mit.edu> wrote:  
 
 Mar - can you provide the output of
lspci -nn -d 10de:
On Sat, Jun 22, 2019 at 2:17 PM Lyude Paul <lyude at redhat.com> wrote:

Hi, is this actually an nv50 GPU, or some other model? I can try to take a closer look at this
On Sun, 2019-06-16 at 10:28 -0400, Ilia Mirkin wrote:
I don't really see anything between v5.0..v5.1 which would account for this. Could have been a subtle change to the i2c logic somewhere. The fastest way to identify the problem would be to do a bisect on the kernel to identify the commit that caused this. There are many guides for this online.
On Sat, Jun 15, 2019 at 12:17 PM Mar Mel <marmel6942 at yahoo.com> wrote:

 Unfortunately, even with this change now reverted in kernel 5.1.10, the fan speed issue persists.
If someone could point me in the direction of a relevant commit(s) I'll happily file a bug report.
    On Thursday, June 13, 2019, 11:19:25 AM EDT, Mar Mel <marmel6942 at yahoo.com> wrote:  
 
 As of kernel 5.1.9, on resume from suspend, my NV50 fan runs at full speed. 

Not sure if it has to do with this new config option (NOUVEAU_LEGACY_CTX_SUPPORT)?

This issue is not present using kernel 5.0.21.
Years ago I filed a similar issue:

60704 – [nouveau, git regression] - I2C PWM fan control broken on nv50 adt7475 on kernels 3.3.x+
Thanks.



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60704 – [nouveau, git regression] - I2C PWM fan control broken on nv50 a...


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-- 
Cheers, Lyude Paul
  
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