<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [IVB regression] screen not resuming on kernel 3.14.6 and above" href="https://bugs.freedesktop.org/show_bug.cgi?id=80182#c23">Comment # 23</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [IVB regression] screen not resuming on kernel 3.14.6 and above" href="https://bugs.freedesktop.org/show_bug.cgi?id=80182">bug 80182</a> from <a class="email" href="mailto:jwrdegoede@fedoraproject.org" title="Hans de Goede <jwrdegoede@fedoraproject.org>"> Hans de Goede</a> <pre>(In reply to <a href="show_bug.cgi?id=80182#c18">comment #18</a>) > > Also can you please try adding: "video.use_native_backlight=0" the the > > kernel commandline with 3.14.6? That should fix things if your bisect has > > found the right commit as the culprit. > > Adding that boot option to 3.14.6, screen resumes OK Ok, so that patch really is the culprit. I'm afraid though that reverting it for <= 3.15 may cause regressions for other T430 users, and with 3.16 we would actually need to add a quirk for your model to force video.use_native_backlight=0 there, as video.use_native_backlight=1 is the default there now. So first lets see if Jani can make any sense of the regdumps you've attached, and then we'll go from there.</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> </ul> </body> </html>