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Bug#597993: xserver-xorg-video-intel: [865GM] shadowfb makes moving windows way too slow


On Wed, Oct 20, 2010 at 18:29, you wrote:
> You may want to try a newer version
> It had some changes related to shadow, not sure what their impact is.

Indeed the performance degradation is fixed in 2.13 version. And
although it is still not perfect (e.g. smooth scrolling of Gmail
threads takes nearly 100% CPU, which IIRC was the same with a bunch of
last releases), at least the driver is usable now on 865G chipset.

Thank you! Is there a chance to get this version into Squeeze before release?

Condensed noteworthy differences between old and new Xorg.0.log:

< (==) intel(0): Shadow buffer enabled, GPU acceleration disabled.
< (II) intel(0): direct rendering: Disabled
< (II) AIGLX: Screen 0 is not DRI2 capable
< (II) AIGLX: Screen 0 is not DRI capable
< (II) AIGLX: Loaded and initialized /usr/lib/dri/swrast_dri.so
< (II) GLX: Initialized DRISWRAST GL provider for screen 0

> (II) intel(0): [DRI2] Setup complete
> (II) intel(0): direct rendering: DRI2 Enabled
> (II) AIGLX: enabled GLX_MESA_copy_sub_buffer
> (II) AIGLX: enabled GLX_SGI_make_current_read
> (II) AIGLX: enabled GLX_SGI_swap_control and GLX_MESA_swap_control
> (II) AIGLX: GLX_EXT_texture_from_pixmap backed by buffer objects
> (II) AIGLX: Loaded and initialized /usr/lib/dri/i915_dri.so
> (II) GLX: Initialized DRI2 GL provider for screen 0


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