Re: F14 Uses Wrong Resolution on Dell C600 Laptop

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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


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