It was app-specific in my case. For example, kvm/qemu was configured to use something other than pulseaudio, and was fighting with pulseaudio, causing the video output to be jerky as it used 100% cpu trying to play sound. Once I reconfigured the errant apps to talk to pulseaudio instead of whatever they were trying to talk to, things were smooth.
In all fairness, the problem wasn't even pulseaudio itself, but rather misconfigured apps. But I never had problems before pulseaudio, and there was recently a Slashdot article bashing pulseaudio, so that's where the blame went... I never did get the Phoronix test running; it bombed out with some kind of gtk error. But I convinced myself that it wasn't the Intel driver at fault by comparing extremetuxracer framerates. It was significantly faster in 9.10 -- double the framerate at 800x600 (60fps vs 30fps), and about 20% faster at 1680x1050 (30fps vs 25fps). If you want a test that doesn't depend on sound or require installing extra software, look at your screensaver demos. They don't interface with the soundcard at all -- just 2D and 3D graphics. If the screensavers look like they are running at the same speed under both your systems, then it's probably not the video driver at fault. That should have been my tip-off to look elsewhere, but I ignored this data point and still blamed the video driver. One other thing that may or may not apply in your case: While trying to solve this problem, I read about some people who had trouble if they had an Intel and Radeon card in the same system (Intel on motherboard and Radeon card). If they installed the radeon proprietary driver, then I think the Intel card would get slow or broken. It didn't apply to me though, so I didn't read it too closely. -- Intel x3100 enormous regression in ubuntu 9.10 beta https://bugs.launchpad.net/bugs/451523 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
