LG Flatron L226WTQ with intel and radeon drivers

[Alex Deucher]

On 10/15/07, Amit Kucheria <amit.kucheria at gmail.com> wrote:
> Hi,
>
> I just bought a 22" LCD (LG Flatron L226WTQ) with a native resolution
> of 1680x1050. I am running Ubuntu Gutsy (7.10) on two laptops that
> contains the following versions of the drivers:
>
> xserver-xorg-video-intel - 2.1.1
> xserver-xorg-video-ati - 6.7.195
>
>
> Intel Graphics
> ----------------
> The problem is that I an unable to get the native resolution of this
> monitor working on either laptop. On the x60s (with intel graphics
> 945GM/GMS), the desktop extends beyond the physical screen and no
> amount of playing with modelines has fixed this.
>
> ATI Graphics
> ---------------
> On the T41 (with ATI graphics, radeon RV250), the desktop is shifted 2
> inches to the left. Hitting the "Autoset" button on the LCD fixes it
> momentarily, but then it goes back to being shifted.
>
> I am using the VGA connector to connect the monitory. Xorg.0.log for
> both laptops is attached. Any pointers to solve the problem are
> appreciated.

This is an xserver bug.  There was a bug in xserver 1.3 that reversed the sync
polarities of the data from the edid.  you'll have to patch or update your
xserver or add new modes to override the ones from the edid.

xserver commit: ff4bd3addb48df3eacc4b121cc249a7f38eb981a

Alex