<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <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 <a class="email" href="mailto:stanislav.lisovskiy@intel.com" title="Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>"> Stanislav Lisovskiy</a> <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> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>