[Bug 82880] Black screen on modesetting with Dell Venue 8 Pro (older firmware) on 3.16.x

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82880

--- Comment #13 from Evgheni Dereveanchin <jekader at gmail.com> ---
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.

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