Unable to change X resolution

[Derek Broughton]

Mike Linksvayer wrote:

> Ubuntu 6.06 (upgrade from 5.10, though this didn't work on 5.10, I
> just never bothered to try to fix it), Dell Inspiron 6000, i915GM
> video chipset.
> 
> I'm using 915resolution to obtain 1920x1200. 

hmmm.  I really didn't think this screen had so high a resolution (mine -
same machine, same screen, only goes to 1280x800 under Windows, so I
thought that was the max).

> In this case 
> System|Preferences|Screen Resolution offers me 1920x1200 and
> 1600x1200.  If I do not use 915resolution I only get 1600x1200.  I
> actually get 1600x1200 as an option even if I do not include it in
> xorg.conf.
... 
> Section "Modes"
> Identifier "16:10"

Funny - most of these aren't 16:10 :-)

> # 800x600 @ 60.00 Hz (GTF) hsync: 37.32 kHz; pclk: 38.22 MHz
> Modeline "800x600"  38.22  800 832 912 1024  600 601 604 622  -HSync
> +Vsync # 1024x768 @ 60.00 Hz (GTF) hsync: 47.70 kHz; pclk: 64.11 MHz
> Modeline "1024x768"  64.11  1024 1080 1184 1344  768 769 772 795  -HSync
> +Vsync # 1280x1024 @ 60.00 Hz (GTF) hsync: 63.60 kHz; pclk: 108.88 MHz
> Modeline "1280x1024"  108.88  1280 1360 1496 1712  1024 1025 1028 1060
> -HSync +Vsync # 1600x1200 @ 60.00 Hz (GTF) hsync: 74.52 kHz; pclk: 160.96
> MHz
> Modeline "1600x1200"  160.96  1600 1704 1880 2160  1200 1201 1204 1242
> -HSync +Vsync # 1920x1200 @ 60.00 Hz (GTF) hsync: 74.52 kHz; pclk: 193.16
> MHz
> Modeline "1920x1200"  193.16  1920 2048 2256 2592  1200 1201 1204 1242
> -HSync +Vsync 
> EndSection 
...
> Section "Screen"
>   Identifier  "Default Screen"
>   Device       "Intel Corporation Intel Default Card"
>   Monitor      "Generic Monitor"
>   DefaultDepth 24
> 
>   Subsection "Display"
>     Depth       24
>     Modes       "1920x1600" "1600x1200" "1280x1024" "1024x768" "800x600"
>   EndSubsection
> EndSection

You don't even _have_ 1920x1200 specified, so I can only imagine that
915resolution is completely overriding this.
-- 
derek