2012/2/15 Shahar Or <[email protected]> > > 2012/2/14 Michel Dänzer <[email protected]> > > > > On Mon, 2012-02-13 at 13:05 +0200, Shahar Or wrote: > > > > > > A Live image of Ubuntu Desktop 12.04 amd64 was also tested. It had the > > > same stuttering / framedrop. > > > > Have you tried a live image of a different distro? > > I've tried openSUSE-12.1-GNOME-LiveCD-x86_64.iso. Same thing. Maybe a > bit worse. Using the 'performance' governor results in no stuttering, > just like in Ubuntu 11.10 (more on that below). > > > > 2012/2/9 Michel Dänzer <[email protected]> > > > > On Don, 2012-02-09 at 02:03 +0200, Shahar Or wrote: > > > So I ran sysprof, which is an easy GUI and to my content I only needed > > > to press a "Start" button :). That's when the magic happened. From the > > > moment it starts the stuttering goes away. Sweet rendering smoothness > > > of divine electrical display benefaction ensues! And from the moment I > > > press "Profile" to stop it, it stops and stuttering returns OMG. And > > > this is perfectly persistent. What does this mean? > > > > Not sure... > > > > Which cpufreq governor is being used? Assuming it's one that dynamically > > changes CPU core frequencies, such as ondemand or conservative, does the > > problem go away if you switch to one that doesn't, e.g. performance or > > powersave? > > This is fun. > performance: smoothness goodness > ondemand: the stuttering as demonstrated in the video > conservative: stuttering reduced to seemingly about 10% compared to ondemand > powersave: stuttering increase seemingly to about five times more than > with ondemand > > When using ondemand, raising minimum frequencies results in less > stuttering. Raising the minimum frequency of all four cores to the > second step, 1.7GHz, helps a lot and and raising it to 2.5GHz results > no stuttering. This is under the limited strain of dragging windows > around in 1280x1024 in compiz, Ubuntu 11.10.
Dear Michel, list, Is there anything else I can do in order to help diagnose this issue, please? Here is sysprof: http://paste.ubuntu.com/851535/ Perhaps this is something with cpufreq that's working incorrectly? It seems unrelated to the GPU. I also get these stutterings at the virtual terminal. _______________________________________________ xorg-driver-ati mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-driver-ati
