[bisected] nouveau: "Failed to idle channel x" after resume

[Sven Joachim]

On 2012-08-08 07:37 +0200, Ben Skeggs wrote:

> On Mon, Aug 06, 2012 at 11:38:04PM +0300, Maxim Levitsky wrote:
>> On Sat, 2012-08-04 at 17:41 +0300, Maxim Levitsky wrote: 
>> > On Mon, 2012-07-23 at 18:25 +0300, Aioanei Rares wrote: 
>> > > On Thu, Jul 5, 2012 at 11:24 PM, Martin Nyhus <martin.nyhus at gmx.com> wrote:
>> > > >
>> > > > On Mon, 11 Jun 2012 23:18:42 +0200 Martin Nyhus wrote:
>> > > > > after resuming from suspend nouveau starts writing Failed to idle
>> > > > > channel x (where x is 2 or 3) to the log and X appears to stop and
>> > > > > then restart only to stop again. Starting Firefox after resuming
>> > > > > triggers the bugs every time, and bisecting leads to 03bd6efa
>> > > > > ("drm/nv50/fifo: use hardware channel kickoff functionality").
>> > > >
>> > > > Hi Ben,
>> > > > I'm still seeing this bug with the latest from Linus
>> > > > (v3.5-rc5-98-g9e85a6f) and linux-next (next-20120705).
>> > > >
>> > > > lspci output:
>> > > > 01:00.0 VGA compatible controller: nVidia Corporation G86 [GeForce
>> > > > 8400M GS] (rev a1)
>> > > >
>> > > > Sorry I haven't followed up on this earlier,
>> > > > Martin
>> > > 
>> > > I can confirm this with 3.5.0, Chromium and Arch Linux. It's a HP
>> > > Pavilion laptop with a G86 [GeForce 8400 M GS] video card .
>> > > Seems related to this bug:
>> > > http://lists.freedesktop.org/archives/nouveau/2011-January/007358.html
>> > > . If I can do anything else
>> > > to help, I will be glad to.
>> > Added nouveau at lists.freedesktop.org>
>> > 
>> > I confirm the same issue here.
>> > will try to do dig it.
>> Nope,can't dig this :-(
> Interestingly, this works just fine for me after the driver rework.

Not for me on my GeForce 8500 GT, and I still cannot suspend more than
once, subsequent attempts fail:

,----
| Aug  8 07:49:16 turtle kernel: [   91.697068] nouveau W[  PGRAPH][0000:01:00.0][0x0200502d][ffff880037be1d40] parent failed suspend, -16
| Aug  8 07:49:16 turtle kernel: [   91.697078] nouveau  [     DRM][0000:01:00.0] resuming display...
`----

> I can confirm issues on G86 with 3.5/3.6-rc1 stock though.  I'll
> attempt to find a fix suitable for the non-reworked driver.

Thanks.  I'm currently stuck on 3.4 because of this problem.

Cheers,
       Sven