Comment 32 for bug 396171

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Geir Ove Myhr (gomyhr) wrote :

I have marked bug 398026 as a duplicate of this bug, even though it is reported for GM45 and this one is for 965GM. We usually don't duplicate bugs reported for different chipsets, but I think it is very likely that this is the same newly introduced bug.

The previous version of xserver-xorg-video-intel (...git20090602) had a bug in which only the preferred mode from the EDID information would be available (https://bugs.freedesktop.org/show_bug.cgi?id=20801). In ...git20090702 this bug is fixed and also other modes are available. The problem seems to be that for LVDS output the driver sometimes chooses a mode with the preferred resolution, but with a higher frequency (85 Hz instead of 60 Hz in bug 396171 and 60 Hz instead of 50 Hz in bug 398026).

As far as I can see, this bug is not upstream yet (it was introduced only recently) , so we should get it there. Upstream prefers to focus on a single use case, and I think Chris' (bug 398026) describes this better, as he has xrandr output and Xorg.0.log for both 20090602 and 20090702, so it's easy to see the difference. I don't have time to take this upsteam right now, but maybe Chris and Oded can take a look at each other's report and report any striking differences that I haven't seen. Also, if you could take a look at http://intellinuxgraphics.org/how_to_report_bug.html and see if there is some additional information that you may give so that we can include it upstream, that would be nice. To keep the two use cases apart, I think it is best if Chris attaches any additional info to his report and Oded to his.