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.
>

Your monitor's edid has two 1680x1050 modes:

(II) RADEON(0): Supported additional Video Mode:
(II) RADEON(0): clock: 119.0 MHz   Image Size:  474 x 296 mm
(II) RADEON(0): h_active: 1680  h_sync: 1728  h_sync_end 1760
h_blank_end 1840 h_border: 0
(II) RADEON(0): v_active: 1050  v_sync: 1053  v_sync_end 1059
v_blanking: 1080 v_border: 0
(II) RADEON(0): Supported additional Video Mode:
(II) RADEON(0): clock: 146.2 MHz   Image Size:  474 x 296 mm
(II) RADEON(0): h_active: 1680  h_sync: 1784  h_sync_end 1960
h_blank_end 2240 h_border: 0
(II) RADEON(0): v_active: 1050  v_sync: 1053  v_sync_end 1059
v_blanking: 1089 v_border: 0

use xrandr to switch to the other one and see if that helps.  run
xrandr or xrandr --verbose to see what modes are available on the
outputs.

Alex