<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED --- - [BYT Regression]eDP shows black screen while testing testdisplay -f 38.25,800,832,912,1024,600,603,607,624" href="https://bugs.freedesktop.org/show_bug.cgi?id=72752#c6">Comment # 6</a> on <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED --- - [BYT Regression]eDP shows black screen while testing testdisplay -f 38.25,800,832,912,1024,600,603,607,624" href="https://bugs.freedesktop.org/show_bug.cgi?id=72752">bug 72752</a> from <a class="email" href="mailto:przanoni@gmail.com" title="Paulo Zanoni <przanoni@gmail.com>"> Paulo Zanoni</a> <pre>(In reply to <a href="show_bug.cgi?id=72752#c4">comment #4</a>) > (In reply to <a href="show_bug.cgi?id=72752#c3">comment #3</a>) > > After bisect, We found first bad point on -next-queued branch > > commit dff392dbd258381a6c3164f38420593f2d291e3b > > Author: Paulo Zanoni <<a href="mailto:paulo.r.zanoni@intel.com">paulo.r.zanoni@intel.com</a>> > > Date: Fri Dec 6 17:32:41 2013 -0200 > > > > drm/i915: don't touch the VDD when disabling the panel > > > > I don't see a reason to touch VDD when we're disabling the panel: > > since the panel is enabled, we don't need VDD. This saves a few sleep > > calls from the vdd_on and vdd_off functions at every modeset. > > > > Bugzilla: <a class="bz_bug_link bz_status_VERIFIED bz_closed" title="VERIFIED FIXED - [BYT]igt/kms_flip: DP link train fail due to IOSF sideband fabric timeout" href="show_bug.cgi?id=69693">https://bugs.freedesktop.org/show_bug.cgi?id=69693</a> > > Reviewed-by: Rodrigo Vivi <<a href="mailto:rodrigo.vivi@gmail.com">rodrigo.vivi@gmail.com</a>> > > Signed-off-by: Paulo Zanoni <<a href="mailto:paulo.r.zanoni@intel.com">paulo.r.zanoni@intel.com</a>> > > [danvet: Fix the patch mangle wiggle has done ... Spotted by Paulo. > > Also drop the runtime_pm_put call which now has to go due to different > > patch ordering. Also from Paul.] > > Signed-off-by: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>> > > > > Reverted this commit, the bug unable to reproduce. > > I suggest we revert that and reopen <a class="bz_bug_link bz_status_VERIFIED bz_closed" title="VERIFIED FIXED - [BYT]igt/kms_flip: DP link train fail due to IOSF sideband fabric timeout" href="show_bug.cgi?id=69693">bug 69693</a>. Assigning to Paulo. According to the spec, we should be doing the correct thing now, so I'm in favor of spending a little bit of time on the proper fix before we decide to revert. But I don't have a BYT machine, so if someone wants to help, please :) There's also the possibility of doing a BYT-revert-only or a ILK-SNB-IVB-BYT-revert-only (leaving HSW+ untouched).</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> </ul> </body> </html>