<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Black screen on modesetting with Dell Venue 8 Pro (older firmware) on 3.16.x" href="https://bugs.freedesktop.org/show_bug.cgi?id=82880#c13">Comment # 13</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Black screen on modesetting with Dell Venue 8 Pro (older firmware) on 3.16.x" href="https://bugs.freedesktop.org/show_bug.cgi?id=82880">bug 82880</a> from <a class="email" href="mailto:jekader@gmail.com" title="Evgheni Dereveanchin <jekader@gmail.com>"> Evgheni Dereveanchin</a> <pre>I am also experiencing this behavior on a 3.18 kernel built by Adam. Will attach the trace to this bz. Adam, the "slow boot" in your case may be caused by this: Sep 27 07:05:54 fedlet.happyassassin.net kernel: Clocksource tsc unstable (delta = 64072097 ns) Sep 27 07:05:54 fedlet.happyassassin.net kernel: Switched to clocksource refined-jiffies In my case the clocksource was also switching to refined-jiffies which made huge timing issues, i worked around it by sticking with tsc (added clocksource=tsc cmdline) because in my case hpet is not available, probably due to buggy BIOS.</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>