can't center X display
On my Etch machine, I've tested the centering of the desktop under three
conditions: running fvwm, gnome, or a VMware virtual machine in full-screen
mode. If I set up xorg.conf for 1600x1200, any of the displays is centered
correctly (by luck, I guess). If I set it up for 1280x1024, each is offset
to the right. I haven't figured out how to fix this but have tried a few
things.
I called xvidtune, which promptly said that my video wasn't tunable. Turns
out that my Etch install had left me running the "vesa" video driver. I
changed xorg.conf to list the "i810" driver, which should be better for the
Intel 82946GZ chipset on my onboard graphics card. After that, xvidtune gave
its usual display, but if I hit "Apply", even without changing any of the
paremeters, it complained:
"You have requested a mode-line
That is not possible, or not supported by your configuration".
I also tried adding a ModeLine to xorg.conf:
Section "Monitor"
...
ModeLine "1280x1024" 157.50 1280 1344 1504 1728 1024 1025 1028 1072
This didn't cause any errors, even in /var/log/Xorg.0.log. However, changing
the HSyncStart and HSyncEnd values in the ModeLine had no effect. (I
restarted X after each change.)
I have not tried installing the i810 driver from Intel. The instructions at
http://www.intellinuxgraphics.org/install.html
suggest that I might need some other modules (i810, drm, agpgart) loaded into
into the kernel. Lsmod showed none of those. I tried loading them with
insmod. The first two loaded OK; the last complained that there was no
/dev/agpgart. Before proceeding any farther I decided to post the question.
Any idea how to get the display centered at 1280x1024, with or without
xvidtune? Thanks.
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