I'm still getting the same behaviour with XAA and updating my feisty as of 1 hr ago. I confirm that radeon says its using XAA, I'm getting the same stack trace when closing a window and a just black opengl context.
I can provide the code I'm using for testing. Actually I'll test the ubuntu package of that same software to confirm. if you do apt-get install puredata gem Then you can start puredata from terminal like so: pd -lib Gem then if you click on "Help" -> "Browser..." Then click on gem/ -> 01.basic -> 01.redSquare.pd Then you get a funny graph, just click on "create" which will create the opengl context, and then "1" to start rendering. We should see a red square, but we just get a black window. if you press "0" to stop rendering and "destroy" to close the context, you'll get a segfault in glXMakeCurrentReadSGI from /usr/lib/libGL.so.1 I'm quite certain its the radeon/mesa/dri causing this issue, but I only have feisty on one machine, this powerbook5,2 with ati 9600 card. Shall I get the gem maintainer in on the discussion? I think its Guenter Geiger, but I don't see any maintainer listed on this page: http://packages.ubuntulinux.org/feisty/graphics/gem .b. b wrote: > Hi Erik, > > I'm updating my machine right now, I already tried changing to XAA > (before I left the acceleration option unspecified, I guess EXA is the > default) but my rendering is still black, so I assume that a version of > xorg that is out there now will fix it. I'll post if I am still unable > to get things to work with XAA and feisty as of today. > > .b. > > Erik Chakravarty wrote: >> Acceleration now works with the current Mesa package in Feisty, however >> there are severe problems with the EXA acceleration method which causes >> X to use 100% of the CPU for a long time when doing simple operations >> (opening firefox, for example). >> >> Switching to XAA acceleration fixes this. >> >> glxgears reports 1600-1700 FPS when running over Beryl + AIGLX. >> > -- 3d rendering performance regression Dapper->Edgy with Radeon 9600 M10 https://launchpad.net/bugs/61607 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
