Intel 945GM / 950GMA / Xorg 7.0 Slowness

Johnson, Charles F charles.f.johnson at
Thu Jun 8 14:15:45 PDT 2006

Unless Debian or Ubuntu integrated an updated driver, 945GM support did
not make it into X11R6.9/7.0.  The code did not go into the Xorg, Mesa
or Linux kernel upstreams until after X11R6.9/7.0 was released.  

Charles Johnson
Intel Corporation
charles.f.johnson at


From: xorg-bounces at
[mailto:xorg-bounces at] On Behalf Of Chris Monahan
Sent: Thursday, June 08, 2006 2:09 PM
To: xorg at
Subject: Intel 945GM / 950GMA / Xorg 7.0 Slowness

	I have a Dell Inspiron E1705 - 1920x1200 Resolution with an
Intel 945GM / 950 GMA card. In Xorg 6.9, full screen scrolling worked
perfectly. Super smooth. It worked smoothly in any terminal including
gnome-terminal. When running a timed cat, I could output
/usr/share/dict/words in seconds. Both Debian and Ubuntu recently
switched to Xorg 7.0. Now, it takes 24 seconds to scroll the words
file... Here is the weird thing. DVD playback, mpeg playback, window
movement, even scrolling in Firefox are perfectly fast. Even 3D is fully
supported. It's just Scrolling in terminals or word processors that are
DOG SLOW. When doing so, the X process takes 99% of my cpu... I have
posted to debian and ubuntu bug lists with no help. Sure, if I run my
laptop in 1024x768 resolution, scrolling is fine. But I don't want to
run my system that way... 
	Something seems to be wrong with the i810 module in Xorg 7.0.
Can anyone please help me? I am at witts end. I run gnome-terminal and
ssh daily, 8 hours a day. It is S L O W.
	Please help,

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <>

More information about the xorg mailing list