<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [bdw edp] Screen Flickering" href="https://bugs.freedesktop.org/show_bug.cgi?id=91393#c121">Comment # 121</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [bdw edp] Screen Flickering" href="https://bugs.freedesktop.org/show_bug.cgi?id=91393">bug 91393</a> from <a class="email" href="mailto:mika.kahola@intel.com" title="Mika Kahola <mika.kahola@intel.com>"> Mika Kahola</a> <pre>(In reply to Evandro Myller from <a href="show_bug.cgi?id=91393#c120">comment #120</a>) > (In reply to Mika Kahola from <a href="show_bug.cgi?id=91393#c117">comment #117</a>) > > Created <a href="attachment.cgi?id=123877" name="attach_123877" title="Revert Fast Link Training">attachment 123877</a> <a href="attachment.cgi?id=123877&action=edit" title="Revert Fast Link Training">[details]</a> <a href='page.cgi?id=splinter.html&bug=91393&attachment=123877'>[review]</a> [review] [review] > > Revert Fast Link Training > > > > This patch reverts the fast link training feature. However, I have seen that > > some of the flickering issues are not caused by this feature. Please, give > > this a go and report back if this patch fixes the screen flickering. > > Mika, I've been following this thread for a while now. > > Since kernel 4.3, I always tried and compiled it with a patch that disabled > the fast link training feature and it worked. Now, for kernel 4.6, I tried > your latest patch and once again my screen is working like a charm. Earlier > today, I also tried the latest original kernel, but the flickering was even > worse than in previous versions - one can't even pass the gdm login screen! > > Please let me know if I can provide and logs or dumps, and their specific > files. > > Thank you. Are you using DP or eDP? Does your panel support PSR? For eDP the fast link training should be ok as you could assume that the cable length and connections are not changing. Anyway, logs and dumps are always welcomed as there are quite a variety of different HW combinations out there.</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>