Regression in intel driver

[Tom Evans]

On Tue, 2008-09-23 at 10:30 +0100, Tom Evans wrote:
> Hi all
> 
> I've been using the intel xorg driver for quite some time now, and
> recently upgraded Xorg server/drm/intel driver to the most current
> available in ports. This has caused a significant performance regression
> when running without direct rendering enabled, which is required with
> this driver to achieve Virtual desktop with a dimension greater than
> 2048 pixels. Xorg now chews through 30-35% CPU whilst tailing a log
> file, where as before this used 3-4%. The effect is visibly noticeable
> (and doesn't just apply to fast moving text!)
> 
> I have an HP laptop with a 1400x1050 LVDS panel, with a 1280x1024 TFT
> attached to the VGA port. My preferred setup is:
> 
> xrandr --output LVDS --mode 1400x1050 --output VGA --mode 1280x1024 --left-of LVDS
> 
> What I am running now, the only way to get sane performance:
> 
> xrandr --output LVDS --mode 1024x768 --output VGA --mode 1280x1024 --above LVDS
> 
> I've tried reverting back to an older driver, but it seems that changes
> to libdrm prevent that. I fear I may have to roll back drm, mesa,
> xorg-server et al just to use a different driver version.
> 
> Any tips?
> 
> Cheers
> 
> Tom

I've just re-read this, and it isn't clear at all, my bad! 

First off, I forgot to mention what fbsd version I am using:
FreeBSD zoot.mintel.co.uk 7.1-PRERELEASE FreeBSD 7.1-PRERELEASE #9: Mon
Sep 15 16:06:57 BST 2008
root at zoot.mintel.co.uk:/data2/FreeBSD/RELENG_7/obj/data2/FreeBSD/RELENG_7/src/sys/ZOOT  i386

What I really need help with is, if I want to rollback to and use an
earlier version of the intel driver, what other packages should I also
roll back? The compilation failure of xf86-video-intel-2.2.1_1 (and
earlier versions) is:

  In file included from i810_driver.c:88:
  i830.h:74:20: error: xf86mm.h: No such file or directory

Googling tells me that this is due to a libdrm change, so obviously that
must be downgraded, which probably will require an earlier version of
xorg-server as well. Any notable others that will need to be downgraded?

Cheers

Tom
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 195 bytes
Desc: This is a digitally signed message part
Url : http://lists.freebsd.org/pipermail/freebsd-x11/attachments/20080923/be0862ea/attachment.pgp