<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [i9xx TV][BISECT] vblank wait timeout on crtc" href="https://bugs.freedesktop.org/show_bug.cgi?id=93782#c22">Comment # 22</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [i9xx TV][BISECT] vblank wait timeout on crtc" href="https://bugs.freedesktop.org/show_bug.cgi?id=93782">bug 93782</a> from <a class="email" href="mailto:mariusz.g.mazur@gmail.com" title="Mariusz Mazur <mariusz.g.mazur@gmail.com>"> Mariusz Mazur</a> <pre>Original bug report was against 4.4.0 on GM965/GL960, so the commit indicated in the comments is likely a separate issue. I've checked a few kernels (using <a href="http://kernel.ubuntu.com/~kernel-ppa/mainline/">http://kernel.ubuntu.com/~kernel-ppa/mainline/</a> builds) and the one that's definitively stable and which I'm using right now (on my old GM965 laptop) is 4.1.35. My initial tests indicated that this problem was immediately noticeable on 4.4 and up (it was enough to boot without X and check dmesg|grep vblank), but not on 4.3.6, though the latter showed some issues when waking up from sleep, so I'm not 100% it's not present. Bottom line: my initial test indicate that this issue was definitively introduced somewhere between 4.2 and 4.4, likely in 4.4. Once I have some more time and learn how to efficiently use bisect on ubuntu, I'll pinpoint the precise commit.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>