<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Black screen when reconnecting display" href="https://bugs.freedesktop.org/show_bug.cgi?id=93746#c10">Comment # 10</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Black screen when reconnecting display" href="https://bugs.freedesktop.org/show_bug.cgi?id=93746">bug 93746</a> from <a class="email" href="mailto:linux@bernd-steinhauser.de" title="Bernd Steinhauser <linux@bernd-steinhauser.de>"> Bernd Steinhauser</a> <pre>Ok, I'm pretty sure I tracked it down: commit 5b5561b3660db734652fbd02b4b6cbe00434d96b Author: Mario Kleiner Date: Wed Nov 25 20:14:31 2015 +0100 drm/radeon: Fixup hw vblank counter/ts for new drm_update_vblank_count() (v2) Obviously the same (or similar) commit did go into amdgpu which I didn't test as it is marked experimental for Kaveri. The rev before that didn't show the issue, with that rev, it occured. To be sure I also tested 4.4.1 vanilla and with the commit reverted. For vanilla reconnecting the screen resulted in a black screen as described. With the patch reverted, it did not happen.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>