Re: [Intel-gfx] [PATCH] drm/i915: Fix eDP blank screen after S3 resume on HP desktops

2012-06-21 Thread Takashi Iwai
At Thu, 21 Jun 2012 14:33:07 +0200, Daniel Vetter wrote: > > On Thu, Jun 21, 2012 at 02:11:50PM +0200, Takashi Iwai wrote: > > At Wed, 20 Jun 2012 11:39:51 +0200, > > Takashi Iwai wrote: > > > > > > At Wed, 20 Jun 2012 11:36:51 +0200, > > > Daniel Vetter wrote: > > > > > > > > On Wed, Jun 20, 20

Re: [Intel-gfx] [PATCH] drm/i915: Fix eDP blank screen after S3 resume on HP desktops

2012-06-21 Thread Daniel Vetter
On Thu, Jun 21, 2012 at 02:11:50PM +0200, Takashi Iwai wrote: > At Wed, 20 Jun 2012 11:39:51 +0200, > Takashi Iwai wrote: > > > > At Wed, 20 Jun 2012 11:36:51 +0200, > > Daniel Vetter wrote: > > > > > > On Wed, Jun 20, 2012 at 11:21:11AM +0200, Takashi Iwai wrote: > > > > At Wed, 20 Jun 2012 10:0

Re: [Intel-gfx] [PATCH] drm/i915: Fix eDP blank screen after S3 resume on HP desktops

2012-06-21 Thread Takashi Iwai
At Wed, 20 Jun 2012 11:39:51 +0200, Takashi Iwai wrote: > > At Wed, 20 Jun 2012 11:36:51 +0200, > Daniel Vetter wrote: > > > > On Wed, Jun 20, 2012 at 11:21:11AM +0200, Takashi Iwai wrote: > > > At Wed, 20 Jun 2012 10:05:12 +0200, > > > Daniel Vetter wrote: > > > > > > > > On Wed, Jun 20, 2012 a

Re: [Intel-gfx] [PATCH] drm/i915: Fix eDP blank screen after S3 resume on HP desktops

2012-06-20 Thread Takashi Iwai
At Wed, 20 Jun 2012 11:36:51 +0200, Daniel Vetter wrote: > > On Wed, Jun 20, 2012 at 11:21:11AM +0200, Takashi Iwai wrote: > > At Wed, 20 Jun 2012 10:05:12 +0200, > > Daniel Vetter wrote: > > > > > > On Wed, Jun 20, 2012 at 09:17:41AM +0200, Takashi Iwai wrote: > > > > This patch fixes the proble

Re: [Intel-gfx] [PATCH] drm/i915: Fix eDP blank screen after S3 resume on HP desktops

2012-06-20 Thread Daniel Vetter
On Wed, Jun 20, 2012 at 11:21:11AM +0200, Takashi Iwai wrote: > At Wed, 20 Jun 2012 10:05:12 +0200, > Daniel Vetter wrote: > > > > On Wed, Jun 20, 2012 at 09:17:41AM +0200, Takashi Iwai wrote: > > > This patch fixes the problem on some HP desktop machines with eDP > > > which give blank screens af

Re: [Intel-gfx] [PATCH] drm/i915: Fix eDP blank screen after S3 resume on HP desktops

2012-06-20 Thread Takashi Iwai
At Wed, 20 Jun 2012 10:05:12 +0200, Daniel Vetter wrote: > > On Wed, Jun 20, 2012 at 09:17:41AM +0200, Takashi Iwai wrote: > > This patch fixes the problem on some HP desktop machines with eDP > > which give blank screens after S3 resume. > > > > The problem looks like a timing issue. Although B

Re: [Intel-gfx] [PATCH] drm/i915: Fix eDP blank screen after S3 resume on HP desktops

2012-06-20 Thread Daniel Vetter
On Wed, Jun 20, 2012 at 09:17:41AM +0200, Takashi Iwai wrote: > This patch fixes the problem on some HP desktop machines with eDP > which give blank screens after S3 resume. > > The problem looks like a timing issue. Although BLC_PWM_CPU_CTL > register is already restored at the beginning of resu

[Intel-gfx] [PATCH] drm/i915: Fix eDP blank screen after S3 resume on HP desktops

2012-06-20 Thread Takashi Iwai
This patch fixes the problem on some HP desktop machines with eDP which give blank screens after S3 resume. The problem looks like a timing issue. Although BLC_PWM_CPU_CTL register is already restored at the beginning of resume, it doesn't seem to take effect. Simply re-issuing the register wri