<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - GLK: HDMI output does not resume after DPMS OFF with DMC loaded" href="https://bugs.freedesktop.org/show_bug.cgi?id=105854#c3">Comment # 3</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - GLK: HDMI output does not resume after DPMS OFF with DMC loaded" href="https://bugs.freedesktop.org/show_bug.cgi?id=105854">bug 105854</a> from <a class="email" href="mailto:imre.deak@intel.com" title="Imre Deak <imre.deak@intel.com>"> Imre Deak</a> <pre>Created <a href="attachment.cgi?id=138558" name="attach_138558" title="Fix HDMI TMDS enabling">attachment 138558</a> <a href="attachment.cgi?id=138558&action=edit" title="Fix HDMI TMDS enabling">[details]</a> <a href='page.cgi?id=splinter.html&bug=105854&attachment=138558'>[review]</a> Fix HDMI TMDS enabling > Issue started occur with commit 069d40f5834ad26a58f269225a7e13af17019062 I was able to repro the problem on my GLK and can confirm that reverting the above fixed it. What this commit does is in practice enable DC5 (w/o it DMC will never enter DC5 even though it's enabled and all conditions for DC5 are met). The HDMI output on my RVP is wired through an onboard LSPCON adapter and it seems it has problem accepting the first I2C write to enable the TMDS output buffer after a DC5 entry/exit sequence. Attached is a patch that fixes this, could you Clint try if it gets rid of the problem? If it does please check the number of write attempts, for me it was always the second write that succeeded.</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> </ul> </body> </html>