On 11/17/05, Michael Kjorling <[EMAIL PROTECTED]> wrote:
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> I have a ATI Radeon 9200 graphics card (lspci says ATI Technologies,
> device 5940, rev 01) which currently drives my monitor at 48.5 kHz 60
> Hz 1024x768 using x11-base/xorg-x11-6.8.2-r4 and the "radeon" driver.
> I would like to raise the refresh rate to 75 Hz. How do I do that?
>
> Various Google searches have turned me up empty, except that possibly
> the answer lies in the ModeLine used. Is that correct and if so, what
> values would I need to tune to adjust the refresh rate?
>
> /etc/X11/xorg.conf says that the vertical refresh rate is "50-90" Hz.
Current x.org versions should be able to auto-detect the VertRefresh
and HorizSync settings, as well as appropriate modelines. So I would
comment out all such stuff from your xorg.conf file, and see if the
autodetection will work.
Probably the easiest way to do this will be:
mv /etc/X11/xorg.conf /etc/X11/xorg.conf.save
X -configure
(follow the printed instructions for testing the generated config)
mv <path from X -configure> /etc/X11/xorg.conf
You may have to change /dev/mouse to /dev/input/mice in the generated
config before it will work.
Then you can diff the generated config with your old one, and see what
settings you want/need to keep.
For reference, my Monitor and Screen sections contain just:
Section "Monitor"
Identifier "LCD"
VendorName "ASUS"
ModelName "1680 x 1050"
# DisplaySize 331 207
EndSection
Section "Screen"
Identifier "LCD"
Device "X600"
Monitor "LCD"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 8
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection
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