<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#c9">Comment # 9</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:mahesh1.kumar@intel.com" title="Mahesh Kumar <mahesh1.kumar@intel.com>"> Mahesh Kumar</a> <pre>If there are any logs available, I can provide more accurate debug. My analysis is: In Gen-9 we have enabled few Display WA's which are increasing WM requirement almost by double for Y-tiling. Which may be resulting in WM requirement being more than available DDB. Assigning (res_blocks = ddb_allocation - 1) is not right solution, as with that we'll violate HW watermark requirement (it may work for some scenario but not really a right solution). If failing during sanitize_watermarks will make userspace to fallback to X-tiling then that's right solution. -Mahesh</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>