<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED --- - Random blank screen after login with Haswell 4400" href="https://bugs.freedesktop.org/show_bug.cgi?id=70145#c16">Comment # 16</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED --- - Random blank screen after login with Haswell 4400" href="https://bugs.freedesktop.org/show_bug.cgi?id=70145">bug 70145</a> from <a class="email" href="mailto:maks@manichord.com" title="Maksim Lin <maks@manichord.com>"> Maksim Lin</a> <pre>Ok maybe I got the wrong end of the stick there - I just tried: cat /proc/sys/kernel/tainted 2 and according to this (<a href="http://kmaiti.blogspot.com.au/2011/09/how-to-check-whether-current-running.html">http://kmaiti.blogspot.com.au/2011/09/how-to-check-whether-current-running.html</a>) it means I have done a forced module load, but I have just booted (ubuntu 12.02.3) and done no such thing myself - does ubuntu to this for some reason in a init script for some reason? More to the point: I have found my trial&error that doing a switch from virt console 7 to 1 then back into X again and then suspending the laptop and waking it again immediately does seem to bring the screen back on again. Doing jsut one of those 2 actions does not. Though it seems that after 3 or 4 times of doing that, that stops working too and then nothing short of force powering down, pulling battery and restarting fixes it.</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>