Craig Lanning wrote:
> On Tue, 2010-12-07 at 13:01 +0200, Johan Scheepers wrote:
>> Craig Lanning wrote:
>>> I have a Dell Latitude C600 which will only display at 800x600.
>>>
>>> $ lspci -s 01:00.0
>>> 01:00.0 VGA compatible controller: ATI Technologies Inc Rage Mobility M3
>>> AGP 2x (rev 02)
>>>
>>> $ xrandr
>>> Screen 0: minimum 640 x 480, current 800 x 600, maximum 800 x 600
>>> default connected 800x600+0+0 0mm x 0mm
>>> 800x600 60.0* 56.0
>>> 640x480 60.0
>>>
>>> I tried adding 'nomodeset' to the kernel boot line, but that had no
>>> effect.
>>>
>>> I tried adding 'video=aty128fb:1400x1050' to the kernel boot line, but
>>> that, also, had no effect.
>>>
>>> Is there a way to get this machine to use the 1400x1050 natural
>>> resolution of the LDC?
>>>
>>> Craig
>>>
>>>
>> Hi Craig,
>>
>> You could try replacing the monitor/screen part in your xorg.conf file
>> with what I will add here. It worked for my Fujitsu/Siemens.
>> If your hardware is..
>> VendorName "Silicon Integrated Systems [SiS]
>> BoardName "771/671 PCIE VGA Display Adapter"
>>
>> Try it anyway it may just work??
>>
>> Make copy of your xorg.conf.
>> Replace the part mentioned.
>> Reboot.
>> Should it not work it will boot in console then replace with origanal.
>>
>> Here follows the lines...
>> Johan
>>> Section "Monitor"
>>> Identifier "Monitor0"
>>> VendorName "Monitor Vendor"
>>> ModelName "Monitor Model"
>>> HorizSync 30-107
>>> VertRefresh 50-185
>>> EndSection
>>>
>>> Section "Device"
>>> ### Available Driver options are:-
>>> ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
>>> ### <string>: "String", <freq>: "<f> Hz/kHz/MHz"
>>> ### [arg]: arg optional
>>> Option "ShadowFB" "false" # [<bool>]
>>> #Option "DefaultRefresh" # [<bool>]
>>> #Option "ModeSetClearScreen" # [<bool>]
>>> Identifier "Card0"
>>> Driver "vesa"
>>> VendorName "Silicon Integrated Systems [SiS]"
>>> BoardName "771/671 PCIE VGA Display Adapter"
>>> BusID "PCI:1:0:0"
>>> EndSection
>
> I can get the vesa driver to run at 1024x768, but what I want is the
> r128 driver running at 1400x1050. Part of why I want the r128 driver is
> to get the hardware acceleration.
>
> Anytime I had the r128 driver running at a resolution above 800x600, the
> display exhibited some strange folding effects. I think that means that
> some of the timing values were wrong.
>
> Thanks for your help.
>
> I think my next step is to try installing Fedora 13 and see if I can get
> that to work. If it works, maybe I can collect timing values from it.
>
> Craig
>
>
OK, now I know this works on different screen cards if making use of
xorg.conf.
Trust you succeed in your efforts.
Johan
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