<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED --- - [sna igb] multihead output stopped working" href="https://bugs.freedesktop.org/show_bug.cgi?id=70132#c21">Comment # 21</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED --- - [sna igb] multihead output stopped working" href="https://bugs.freedesktop.org/show_bug.cgi?id=70132">bug 70132</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>Ah, I see the difference. The mode reported by the EDID has hsync/vsync flags, the currently active mode reported by the kernel does not. I think this should fix up my mistake in adding the current CRTC mode to the output list: commit 33be42bf509b6d57face6b8d99d72dd5f6c90900 Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>> Date: Sun Oct 20 09:03:47 2013 +0100 sna: Fix the addition of the current output Mode to the probed lists We need to add the current mode to the Modes list and not directly to the output->probed_modes as that gets overwritten. Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>> But I fear the root cause is much deeper in the kernel. Can you please attach a drm.debug=6 for the boot sequence so we can try and spot where the flags disappear?</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>