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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - Regression with Dell TB16 dock and Linux kernel 4.16.x"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106250#c7">Comment # 7</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - Regression with Dell TB16 dock and Linux kernel 4.16.x"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106250">bug 106250</a>
from <span class="vcard"><a class="email" href="mailto:stanislav.lisovskiy@intel.com" title="Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>"> <span class="fn">Stanislav Lisovskiy</span></a>
</span></b>
<pre>Minor update: looks like the watermarks go outside ddb_allocation, when
framebuffer is in Y_Tiled mode, first of all drm_framebuffer_init complains
with "no Y Tiling for legacy addfb", however it seems to continue using Y
Tiling when computing watermarks as wp->y_tiled is set to true, which leads it
to go outside ddb_allocation for resolution 3840x2560 used with eDP, which
leads to black screen.
I could fix it either by forcing X Tiling instead of Y Tiling or just by
assigning res_blocks to the current maximum ddb_allocation value.
Which way is correct here, I still have to understand.</pre>
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