Re: F14 Uses Wrong Resolution on Dell C600 Laptop

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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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