Re: Info: mapping multiple BARs. Your kernel is fine.

Dave Jones
2014-04-17T20:04:22Z

On Thu, Apr 17, 2014 at 10:01:27PM +0200, Borislav Petkov wrote:
> On Thu, Apr 17, 2014 at 03:52:40PM -0400, Dave Jones wrote:
> > Just as X starts up, I see this in dmesg..
> >
> > [ 42.879049] [drm:cpt_serr_int_handler] *ERROR* PCH transcoder A FIFO underrun
>
> FWIW, I have that too. It should be something i915-related:
>
> [ 0.617673] [drm] Memory usable by graphics device = 2048M
> [ 0.694445] i915 0000:00:02.0: irq 42 for MSI/MSI-X
> [ 0.694549] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
> [ 0.694631] [drm] Driver supports precise vblank timestamp query.
> [ 0.695313] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
> [ 0.788300] [drm] GMBUS [i915 gmbus dpb] timed out, falling back to bit banging on pin 5
> [ 0.799829] fbcon: inteldrmfb (fb0) is primary device
> [ 1.176845] [drm:cpt_serr_int_handler] *ERROR* PCH transcoder A FIFO underrun

Can you send me your .config off-list ?
I wonder if this is something config specific that's causing me to see
this, and you not, given we've apparently got similar machines.

Dave