[ltp] xrandr help

[Alex Deucher]

On 9/19/05, David Tansey <djtansey@gmail.com> wrote:
> Hello all -
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> I have just purchased a dell 1905fp 19" monitor. It's default resolution
> is 1280x1024@60Hz, according to the documentation. My laptop is a
> thinkpad x40 -- it's LCD's default resolution is 1024x768.
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> Fn-F7 has switched me over to the 19", but I am unable to xrandr -s
> 1280x1024. When I do, it prints out the same thing as when I type xranrd
> --help.
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> xrandr by itself prints this out:
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>  SZ:    Pixels          Physical       Refresh
> *0   1024 x 768    ( 382mm x 315mm )  *75
>  1    800 x 600    ( 382mm x 315mm )   75
>  2    640 x 480    ( 382mm x 315mm )   75
> Current rotation - normal
> Current reflection - none
> Rotations possible - normal
> Reflections possible - none
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> I have modified my xorg.conf to include two monitors and two screen
> sections. The second screen section uses the dell "Monitor1."
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> It seems I don't have a 1280x1024 option for xrandr, however.
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> Any insight would be appreciated. I have attached my xorg.conf.
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> Thank you very much.
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The 1280x1024 mode is most likey being thrown out since the internal
LCD doesn't support it.  Since X starts at the highest supported mode,
you can only use xrandr to select smaller modes.  to do what you want,
you'd probably need to mess with the clone option or start X to ouput
to the crt only.  Also check to make sure your video bios supports the
1280x1024 mode.  Since the i810 driver relies on the bios for mode
setting, you are limited to the modes supported by the bios.

Alex

> -David
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