Intel 82865G video performance a bit slower than on Breezy

[Eamonn Sullivan]

Hi all,

Rather than upgrade to Dapper, I did a clean install on another
partition (my 2.8Ghz Celeron system has collected a load of junk in
the transitions through Warty-Hoary-Breezy, so wanted a fresh start).
Other than having to work around a crash in the new graphical
installer, of which I was around the 10th person to report *after* it
had been fixed already in daily builds (sorry), everything has gone
smoothly. I've been able to restore a whole bunch of services I use
(SSL apache2, moin-moin wiki, samba, subversion, etc.). And I like it.
A lot.

However, one minor quibble is that the video performance is noticeably
slower. It's not so bad in doing normal text editing/Web browsing --
just a bit more pokey. However, you can really see it in the
screensavers. OpenGL things that worked smoothly in Breezy now visibly
repaint. And the dimming that happens to the rest of the screen when
the gtksudo dialog comes up is much slower.

As anyone seen this for the Intel i810 family and have any performance tips?

I'm afraid that despite using Linux since TAMU, the X configuration
files remain a total mystery to me. I've done a diff from my old Xorg
to the new and found very little of what appear to be significant
differences.  For example, the new one has

Load "i2c"

While the old has

Load "dbe"
Load "record"

I have no idea of the signficance of any of those and Google doesn't
supply much information (other than check-in source emails). I'm
hesitant to edit the xorg.conf file directly, if it's not necessary.

I've also gone through a dpkg-reconfigure xserver-xorg, but don't know
whether I should enable framebuffer (it's disabled) or not and also
not sure whether to specify some memory (it's a shared memory chipset
and the RAM line comes up blank during the reconfigure). Can anyone
suggest some settings I should try?

-Eamonn