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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [SKL] Bisected - Black screen when booting"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91269#c9">Comment # 9</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [SKL] Bisected - Black screen when booting"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91269">bug 91269</a>
from <span class="vcard"><a class="email" href="mailto:gavin.hindman@intel.com" title="Gavin Hindman <gavin.hindman@intel.com>"> <span class="fn">Gavin Hindman</span></a>
</span></b>
<pre>Have you tried to pass either i915.edp_vswing=1 or =2 as a boot option? This
is a driver workaround for incompatible panel vswing values in the default uEFI
VBT. This seems to be bouncing in and out randomly per uEFI release.</pre>
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