From mboxrd@z Thu Jan  1 00:00:00 1970
From: Daniel Vetter <daniel@ffwll.ch>
Subject: Re: Fwd: Re: Macbook Pro Retina display problems
Date: Fri, 10 Aug 2012 19:18:13 +0200
Message-ID: <20120810171813.GF5738@phenom.ffwll.local>
References: <CALTeituLVyrQ4WTGOdm+zQNYQSMy+z_UrCin9383J1=8173d8w@mail.gmail.com>
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To: Bernhard Froemel <bfroemel@gmail.com>
Cc: intel-gfx@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org

On Fri, Aug 10, 2012 at 06:49:03PM +0200, Bernhard Froemel wrote:
> Hello Daniel and Francois,
> 
> apologies for posting 'out of thread'.
> 
> > Can you please re-grab the
> > dumps?
> http://luna.vmars.tuwien.ac.at/~froemel/ird_noi915.txt
> http://luna.vmars.tuwien.ac.at/~froemel/ird_i915.txt
> http://luna.vmars.tuwien.ac.at/~froemel/ird_i915_pC.txt (short freeze,
> screen looks for a second scaled to 2/3 (black border), same
> corruption and then looks just like before)
> Also, have you seen this post by 'gschwind':
> http://ubuntuforums.org/showpost.php?p=12160766&postcount=70 ?

Please test the patch at

http://www.gossamer-threads.com/lists/linux/kernel/1579401

and supply your tested-by if it works.

Thanks, Daniel

> 
> For convenience reasons the patch that is attached to the forum post:
> --- linux-3.5.1.orig/drivers/gpu/drm/i915/intel_display.c	2012-08-09
> 17:23:56.000000000 +0200
> +++ linux-3.5.1/drivers/gpu/drm/i915/intel_display.c	2012-08-09
> 21:13:43.146996673 +0200
> @@ -3583,7 +3583,8 @@
> 
>  		if (intel_encoder->type == INTEL_OUTPUT_EDP) {
>  			/* Use VBT settings if we have an eDP panel */
> -			unsigned int edp_bpc = dev_priv->edp.bpp / 3;
> +			//unsigned int edp_bpc = dev_priv->edp.bpp / 3;
> +			unsigned int edp_bpc = 8;
> 
>  			if (edp_bpc < display_bpc) {
>  				DRM_DEBUG_KMS("clamping display bpc (was %d) to eDP (%d)\n",
> display_bpc, edp_bpc);
> 
> Cheers, Bernhard
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Daniel Vetter
Mail: daniel@ffwll.ch
Mobile: +41 (0)79 365 57 48