<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [915 Haswell ULT Asus UX302LA/LG] eDP bpp clamping results in blank screen" href="https://bugs.freedesktop.org/show_bug.cgi?id=73567#c13">Comment # 13</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [915 Haswell ULT Asus UX302LA/LG] eDP bpp clamping results in blank screen" href="https://bugs.freedesktop.org/show_bug.cgi?id=73567">bug 73567</a> from <a class="email" href="mailto:albaguirre@gmail.com" title="Alberto Aguirre <albaguirre@gmail.com>"> Alberto Aguirre</a> <pre>Daniel, I'm already running drm-intel-nightly which includes that commit. That particular hack does indeed run (see attached dmesg log at the beginning) but the panel is still blank. I saw the same hack at intel_dp_get_config, but in my machine intel_dp_get_config does not get called at all. The culprit is clamping bpp from 24 to 18 bpp at intel_dp_compute_config. When the bpp clamping code is disabled and the panel runs at 24 bpp there are no more blank screen issues. (In reply to <a href="show_bug.cgi?id=73567#c4">comment #4</a>) > We've had to duplicate the hack in the hsw code: > > commit 1021442098ee9328fdd4d113d63a3a7f2f40c37b > Author: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>> > Date: Mon Nov 18 07:38:16 2013 +0100 > > drm/i915: Replicate BIOS eDP bpp clamping hack for hsw > > *** This bug has been marked as a duplicate of <a class="bz_bug_link bz_status_RESOLVED bz_closed" title="RESOLVED FIXED - [HSW] Corrupted display on Macbook Pro 11,2 Retina (Intel only, late 2013)" href="show_bug.cgi?id=71049">bug 71049</a> ***</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>