[Intel-gfx] Fwd: Re: Macbook Pro Retina display problems

[Daniel Vetter]

On Mon, Aug 06, 2012 at 11:40:36PM +1000, Francois Rigaut wrote:
> Daniel,
> 
> On Mon, Aug 6, 2012 at 7:17 PM, Daniel Vetter <daniel at ffwll.ch
> <mailto:daniel at ffwll.ch>> wrote:
> 
>    On Mon, Aug 6, 2012 at 10:59 AM, Francois Rigaut <frigaut at gmail.com
>    <mailto:frigaut at gmail.com>> wrote:
>     > Daniel,
>     >
>     >
>     > my bad for the dmesg. It's there:
>     >
>    http://maumae.net/retina/intel_corrupted_drm_debug/dmesg_intel_corrupted_drm_debug
>     >
>     > I took pictures with a camera, and uploaded them at
>     > Small 800x600 versions:
>     >
>    http://maumae.net/retina/intel_corrupted_drm_debug/intel_corrupted_upper_left_small.jpg
>     >
>    http://maumae.net/retina/intel_corrupted_drm_debug/intel_corrupted_upper_right_small.jpg
>     >
>    <http://maumae.net/retina/intel_corrupted_drm_debug/intel_corrupted_upper_left_small.jpg>
>     >
>    http://maumae.net/retina/intel_corrupted_drm_debug/intel_corrupted_whole_screen_small.jpg
>     >
>    <http://maumae.net/retina/intel_corrupted_drm_debug/intel_corrupted_upper_left_small.jpg>
>     > full resolution versions:
>     >
>    http://maumae.net/retina/intel_corrupted_drm_debug/intel_corrupted_upper_left.jpg
>     >
>    <http://maumae.net/retina/intel_corrupted_drm_debug/intel_corrupted_upper_left_small.jpg>
>     >
>    http://maumae.net/retina/intel_corrupted_drm_debug/intel_corrupted_upper_right.jpg
>     >
>    <http://maumae.net/retina/intel_corrupted_drm_debug/intel_corrupted_upper_left_small.jpg>
>     >
>    http://maumae.net/retina/intel_corrupted_drm_debug/intel_corrupted_whole_screen.jpg
>     >
>    <http://maumae.net/retina/intel_corrupted_drm_debug/intel_corrupted_upper_left_small.jpg>
>     >
>     > Otherwise, the display works and behave normally (it's not
>    static, doesn't
>     > flicker). I can interact normally with the GUI element, display
>    stuff, it's
>     > accelerated (I run compiz and window wiggle normally, I can play
>    videos, I
>     > have control of backlight, etc).
> 
>    Wow, that's a pretty impressive light-show ;-) Are the wrong colors
>    always wrong in this manner, or does it change from boot to boot?
> 
> 
> everything (color and sync) are always wrong in the same manner.
> 
> the last git version of intel_reg_dumper gives me:
> with i915 loaded:
> http://maumae.net/retina/intel_corrupted_drm_debug/ird_i915_loaded
> with i915.die=1:
> http://maumae.net/retina/intel_corrupted_drm_debug/ird_i915_not_loaded

Can you please try the below quick hack. If that doesn't cut it, I need to
improve the reg_dumper tool first, the efi firmware sets things up on pipe
C, which we currently don't dump.
-Daniel

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 0a56b9a..d7462da 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -920,9 +920,9 @@ intel_dp_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
 	/* Split out the IBX/CPU vs CPT settings */
 
 	if (is_cpu_edp(intel_dp) && IS_GEN7(dev)) {
-		if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
+		//if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
 			intel_dp->DP |= DP_SYNC_HS_HIGH;
-		if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
+		//if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
 			intel_dp->DP |= DP_SYNC_VS_HIGH;
 		intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT;
-- 
Daniel Vetter
Mail: daniel at ffwll.ch
Mobile: +41 (0)79 365 57 48