Phoronix: New xf86-video-ati Release Planned With KMS
The xf86-video-ati 6.12.0 X.Org driver was released in March of 2009. Since then there has been no significant releases of the ATI X.Org driver, but fortunately, a new release is on the way.The xf86-video-ati DDX driver has been at version 6.12.99 for quite a while now in the Git snapshots, but no release has been pushed...
Great! So it looks like KMS for Radeon driver is ready for general use, is it?
Yes and no. The graphical glitches got sorted out, but its performance right now is... abysmal to the point where it's simply not practical to enable it, even compared to UMS which is slow to begin with
I still can't get a valid video signal through DVI->HDMI with my RV670. DVI->VGA works fine though.
This happens only with KMS enabled.
I can confirm this as well. With KMS enabled there's essentially no output on DVI after grub (as soon as the drive loads I assume).
With radeon.modeset=0 everything works.
This sucks, as I've understood that KMS is required for vsync to work with xv (to get tear free video)?
As Iäm a linux noob, please point me to where I should report this, and what I need to include in the bug report.
What is weird is that if I SSH to the box the X logs look fine, i.e correct EDID data is read from the projector etc and there are no errors.
I tried various radeon driver options without success.
I'm running 2.6.33 and latest from xorg-edgers ppa.
Should I just go out and buy a Nvidia to get my Mythbox running?