<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [IVB CPU eDP] local flat panel stays blank" href="https://bugs.freedesktop.org/show_bug.cgi?id=89578#c16">Comment # 16</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [IVB CPU eDP] local flat panel stays blank" href="https://bugs.freedesktop.org/show_bug.cgi?id=89578">bug 89578</a> from <a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> Ville Syrjala</a> <pre>We don't have too many details in this report about the symptom, so it's a bit hard to know what was happening. But unless I totally misread that earlier bug report, the problem gets fixed after a modeset? If so, the patch I just attached might do something. In the bad case the BIOS left VDD on, and we never turn it off prior to enabling the eDP port. That does make sense since it's a good way to avoid the power cycled delay during boot, but in this case perhaps the panel is confused and we have to power it down first.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>