From: Benoit Gschwind <gschwind@gnu-log.net>
To: intel-gfx@lists.freedesktop.org
Subject: Macbook Pro Retina display problems
Date: Thu, 09 Aug 2012 22:09:23 +0200 [thread overview]
Message-ID: <502418F3.4050607@gnu-log.net> (raw)
[-- Attachment #1: Type: text/plain, Size: 447 bytes --]
Hello,
If find a workaround to video corruption for intel gpu on macbook pro
retina.
the work around work as follow :
- patch the kernel 3.5.1 with attached patch
- that OS X and switch to intgrated gpu only with:
http://codykrieger.com/gfxCardStatus
- reboot with the patched kernel
I did not try it in BIOS mode, I use it on EFI mode only.
The patch point out the fact that bit-per-pixel of panel is not detected
correctly.
Best regards
[-- Attachment #2: 0001-fix_intel_on_macbook_pro_retina.patch.txt --]
[-- Type: text/plain, Size: 564 bytes --]
--- 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);
[-- Attachment #3: Type: text/plain, Size: 159 bytes --]
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next reply other threads:[~2012-08-09 20:11 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-09 20:09 Benoit Gschwind [this message]
2012-08-09 23:01 ` Macbook Pro Retina display problems Francois Rigaut
-- strict thread matches above, loose matches on Subject: below --
2012-07-30 22:33 Greg KH
2012-07-31 2:06 ` Dave Airlie
2012-07-31 3:41 ` Greg KH
2012-07-31 5:00 ` Dave Airlie
2012-07-31 23:38 ` Greg KH
2012-08-03 23:29 ` Keith Packard
2012-08-03 23:36 ` Greg KH
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