[Nouveau] VGA resume & thaw (wake up from S3 & S4) broken - kernel(nouveau) exclusively

[poma]

On 16.09.2014 01:21, Ilia Mirkin wrote:
> On Mon, Sep 15, 2014 at 1:28 PM, poma <pomidorabelisima at gmail.com> wrote:
>> On 15.09.2014 15:36, Ilia Mirkin wrote:
>>> On Mon, Sep 15, 2014 at 4:23 AM, poma <pomidorabelisima at gmail.com> wrote:
>>>> Chipset: G98 (NV98)
>>>> Family : NV50
>>>>
>>>>
>>>> WORKING VIDEO RESUME(S3)
>>>>
>>>> 3.15.0-rc8.1.git.7a014a8
>>>> 3.15.0-rc8.2.git.456b057
>>>> 3.15.0-rc8.3.git.b8407c9
>>>> 3.15.0-rc8.4.git.bb7ef1e
>>>>
>>>> ========================
>>>>
>>>> BROKEN VIDEO RESUME(S3)
>>>>
>>>> STARTING WITH:
>>>> 3.15.0-rc8.5.git.415f12e
>>>>
>>>> commit 415f12efc1b2308411b2cbc3e82666b3db8a7758
>>>> Author: Ben Skeggs <bskeggs at redhat.com>
>>>> Date:   Wed May 21 11:24:43 2014 +1000
>>>>
>>>>     drm/nv50/disp: start removing direct vbios parsing from supervisor
>>>>
>>>>     Signed-off-by: Ben Skeggs <bskeggs at redhat.com>
>>>>
>>>> https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c?id=415f12e
>>>> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c?id=415f12e
>>>
>>> Looks like the same issue as reported in
>>>
>>> https://bugs.freedesktop.org/show_bug.cgi?id=83550
>>>
>>> Ben, any ideas? Poma, can you attach your vbios to the bug above?
>>>
>>>   -ilia
>>>
>>
>> A Video BIOS dumped.
> 
> Thanks! If possible, please provide kernel logs (which include the
> initial boot and the resume) for both 415f12efc1 and 415f12efc1^ (i.e.
> parent commit). Please boot those kernels with
> 'nouveau.debug=trace,PDISP=spam' so that we get the maximal debug
> info. In order for that to work, you'll need to change
> CONFIG_NOUVEAU_DEBUG to 7 (spam). [Don't use such kernels for anything
> other than debugging, setting the debug level so high adds a ton of
> code and will slow things down significantly.]
> 
>   -ilia
> 

In 415f12e proximity no kernel is useful, resumed machine is stuck.
"The display remains OFF" meaning everything else works(likely to Daredevil), only applies to recent kernels.


poma