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Brice Goglin's Blog - Debian/X.org notes - Quick Updates

Jul. 27th, 2009

09:28 - Debian/X.org notes - Quick Updates

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Another round of quick notes about X in unstable while the XSF team is on vacation.

Intel Driver and PAE kernels

If upgrading to xserver-xorg-video-intel broke X or made it very slow, make sure you are not using a PAE/bigmem kernel. The Intel driver now enforces UXA for acceleration. But UXA requires GEM support in the kernel, and GEM is not compatible with PAE before 2.6.31. So if you have PAE in your kernel (CONFIG_HIGHMEM64), i.e. for instance if you are using a -bigmem kernel, your Xorg.0.log will say:

  (EE) intel(0): [drm] Failed to detect GEM.  Kernel 2.6.28 required.
  (EE) intel(0): Failed to become DRM master.

Obviously, 2.6.30 should be enough when 2.6.28 is required. But 2.6.30 with PAE is not.

Return of the DRI2 breakage

It looks like the DRI2 breakage in Xserver 1.6.1.901-3 wasn't enterily fixed in 1.6.2. According to #538637, Xserver 1.6.2 didn't work with KDE4.2 effects when built against Mesa 7.4.4. Fortunately, Mesa 7.5 is in unstable now, and the new Xserver 1.6.2.901-1 was built against it.

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Comments:

From:(Anonymous)
Date:July 27th, 2009 10:39 (UTC)

Thanks

(Link)
Yes, this upgrade really fixed the problem with KDE 4.2 and 4.3 effects, and it even with KernelModeSettings.

Thanks,

Josep
From:(Anonymous)
Date:July 27th, 2009 14:01 (UTC)

testing

(Link)
Is there any chance that 1.6.3 will enter testing after squeeze gets a new kernel?
From:bgoglin
Date:July 27th, 2009 14:21 (UTC)

Re: testing

(Link)
Yes.
I hope the support for i865 boards will be fixed in the Intel driver by then.