[Intel-gfx] 4.2-rc4 kernel warnings on HSW laptop [regression]

[Ville Syrjälä]

On Tue, Oct 13, 2015 at 10:24:58AM +0200, Daniel Vetter wrote:
> On Mon, Oct 12, 2015 at 02:29:19PM +0200, Takashi Iwai wrote:
> > On Mon, 12 Oct 2015 09:04:20 +0200,
> > Daniel Vetter wrote:
> > > 
> > > Another pile of regressions for Jairo to track ...
> > > 
> > > On Sat, Oct 10, 2015 at 11:46:29AM +0200, Takashi Iwai wrote:
> > > > Hi,
> > > > 
> > > > I noticed that a HSW laptop gets a few new warnings since 4.2-rc
> > > > kernels.  One error messages pops at each boot time:
> > > > 
> > > >  Console: switching to colour dummy device 80x25
> > > >  [drm] Replacing VGA console driver
> > > >  [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
> > > >  [drm] Driver supports precise vblank timestamp query.
> > > >  vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
> > > >  [drm:drm_calc_timestamping_constants [drm]] *ERROR* crtc 21: Can't calculate constants, dotclock = 0!
> > > 
> > > There's patches for this one already, but I accidentally applied them for
> > > -next, not -fixes. They should land for -rc6.
> > 
> > Could you point commit ids?
> 
> It was wishful thinking on my side, mixed them up with other patches. I
> think this one's still open :(

7f4c628 drm/i915: Assign hwmode after encoder state readout
0f64614 drm/i915: Fix clock readout when pipes are enabled w/o ports

not enough?

-- 
Ville Syrjälä
Intel OTC