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Open source "Radeon" driver: vsync, vblank_mode, tearing and (open)GL
2.6.34 kernels seem unaffected by this when using the identical userspace, and my Mesa-Gallium and xorg-drv-ati are both from git.
I'm suspecting the vsync code, because that does seem to be the Big Difference between .34 and .35 apart from the memory changes. And my card only has 256M of VRAM on board anyway. (It uses 256M of VRAM under .34 too.)
If by "hang" you mean "hard lockup that needs a power-cycle",
Yep. That's what I mean. I've got the 2.6.32-24-generic kernel from the regular Ubuntu repositories now and my PC shuts off about 3 times each time I can successfully turn it on. In my case: I think it's a hardware (motherboard) problem. I might try to reinstall my Nvidia card to see if it really is my MoBo.
My PC "only" locks up (after a random period of time) when using OpenGL. And currently that means "Gallium from git" too, because I've used Compiz with Fedora's classic 7.8.1 without any trouble so far.
You can use any distro, any kernel or any X.org version with perfect video now? [...] So, there shouldn't be tearing and you should be able to use vsync and xv video output now? So, no black screens or tearing?
Yes. When I use KMS then there is no prob. w/ vsync ands GL. However, I cannot use some features that are very important to me. They are:
When I do not use KMS to load the driver(s) then I can those options are available to me. When will this be fixed?