<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [HSW GT1] trying to flip between 2 buffers of different strides" href="https://bugs.freedesktop.org/show_bug.cgi?id=88716#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [HSW GT1] trying to flip between 2 buffers of different strides" href="https://bugs.freedesktop.org/show_bug.cgi?id=88716">bug 88716</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>(In reply to dhead666 from <a href="show_bug.cgi?id=88716#c4">comment #4</a>) > * 1st test: xf86-video-intel-2.99.916 with flag --enable-debug=full > It looks like adding the flag created another issue, X on vt1 crashing when > I change to vt2. > This test is just to show the X is crashing. > logs: > 20150123-01-xorg_fast_crash-journal.log > 20150123-01-xorg_fast_crash-Xorg.0.log.log (7MB on Dropbox) There's a broken DBG there in 2.99.916. > * 2nd test: xf86-video-intel-2.99.916 with flag --enable-debug=full > In this test I opened multiple tabs in Chromium with allot of images that I > hope overloaded the GPU and generated the wanted debug info. > logs: > 20150123-02-gpu_slowdown-journal.log > 20150123-02-gpu_slowdown-Xorg.3.log.log (100MB) Hmm. We never did a forced crtc flip (i.e. all the front/back pitches were the same). I am not sure if you managed to reproduce the slowdown exactly. My guess is that you need fullscreen chromium? > * 3rd test: xf86-video-intel-2.99.916 with flag --enable-debug=full and with > patch 0001-sna-dri2-Only-preserve-back-buffers-with-the-same-pi.patch > Same as 2nd test but with the patch added. > 20150123-03_with_patch-gpu_slowdown-journal.log > 20150123-03_with_patch-gpu_slowdown-Xorg.0.log.log (50MB) All front/back pitches were equal. Again there was no forced crtc flips.</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> <li>You are the assignee for the bug.</li> </ul> </body> </html>