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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Lenovo ThinkPad E455 (Kaveri A10-7300): Blank built-in screen with radeon kms driver"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90320#c19">Comment # 19</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Lenovo ThinkPad E455 (Kaveri A10-7300): Blank built-in screen with radeon kms driver"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90320">bug 90320</a>
from <span class="vcard"><a class="email" href="mailto:alexdeucher@gmail.com" title="Alex Deucher <alexdeucher@gmail.com>"> <span class="fn">Alex Deucher</span></a>
</span></b>
<pre>Certain panels can be really picky about sequencing or delays in the link
training. I suspect there are mainly just slight differences in the
programming sequences that some panels just don't like. The core link training
code for DAL is here:
<a href="https://cgit.freedesktop.org/~agd5f/linux/tree/drivers/gpu/drm/amd/dal/dc/core/dc_link_dp.c?h=amd-staging-4.7">https://cgit.freedesktop.org/~agd5f/linux/tree/drivers/gpu/drm/amd/dal/dc/core/dc_link_dp.c?h=amd-staging-4.7</a></pre>
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