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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - eDP panel exhibits sparse random noise and flickering (link issue), forcing DP DDI profile helps [Lenovo T450s]"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94087#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - eDP panel exhibits sparse random noise and flickering (link issue), forcing DP DDI profile helps [Lenovo T450s]"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94087">bug 94087</a>
from <span class="vcard"><a class="email" href="mailto:alex@alexanderweb.de" title="Alexander Schremmer <alex@alexanderweb.de>"> <span class="fn">Alexander Schremmer</span></a>
</span></b>
<pre>"You can always override the eDP voltage swing by setting a module parameter
i915.edp_vswing=2"
This was not working before the patch you attached for BDW. Now it should work.
I gathered a VBT of an older BIOS update for the same model (with a different
panel, maybe). How would I know that it also enforces normal vswing? To me,
block_27[0xec] seems all zero as well. Is not that used as a low_vswing
indicator?</pre>
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