Getting widescreen resolution on my widescreen LCD tv

[Nix]

On 17 Apr 2008, Beso said:
> the problem is that 1366x768 is a widescreen resolution is a vesa+
> resolution. i don't know if vesa+ are supported by normal drivers. for

Oh yes, perfectly well.

> example on my laptop 1280x800 i cannot use the wxga resolution on livecds by
> any means, because they require the ati driver which usually doesn't ship
> with them.

I'm using ati 6.8.0 with xserver 1.4.0 and a Radeon 9250 here, with
analog output (the computer case shape makes it impossible to plug in
the DVI cable), and it works just fine at the LCD panel's native
1680x1050 resolution (. The monitor stanza I needed was oh so complex:

Section "Monitor"
	Identifier "Samsung SyncMaster 223BW"
	VendorName "Samsung"
	ModelName  "223BW"
EndSection

(I had a `Gamma 0.5' in there too but it didn't seem to do anything, where
xgamma -g 0.5 does. Odd.)

Note that this monitor, while physically smaller than Arthur's, is newer
in every other respect, while my video card is older: so if his didn't
work because the screen was too new or the driver too old


I was pleasantly surprised by how easy it was to get this thing to work.
Much easier than getting a CRT up and running (no image falling off the
screen edges or anything, of course): just plug it in, restart X, and
bing!

Xorg.0.0.log said:

(II) RADEON(0): Supported VESA Video Modes:
(II) RADEON(0): 720x400 at 70Hz
(II) RADEON(0): 640x480 at 60Hz
(II) RADEON(0): 640x480 at 67Hz
(II) RADEON(0): 640x480 at 72Hz
(II) RADEON(0): 640x480 at 75Hz
(II) RADEON(0): 800x600 at 56Hz
(II) RADEON(0): 800x600 at 60Hz
(II) RADEON(0): 800x600 at 72Hz
(II) RADEON(0): 800x600 at 75Hz
(II) RADEON(0): 832x624 at 75Hz
(II) RADEON(0): 1024x768 at 60Hz
(II) RADEON(0): 1024x768 at 70Hz
(II) RADEON(0): 1024x768 at 75Hz
(II) RADEON(0): 1280x1024 at 75Hz
(II) RADEON(0): 1152x870 at 75Hz
(II) RADEON(0): Manufacturer's mask: 0
(II) RADEON(0): Supported Future Video Modes:
(II) RADEON(0): #0: hsize: 1680  vsize 1050  refresh: 60  vid: 179
(II) RADEON(0): #1: hsize: 1280  vsize 1024  refresh: 60  vid: 32897
(II) RADEON(0): #2: hsize: 1280  vsize 960  refresh: 60  vid: 16513
(II) RADEON(0): #3: hsize: 1152  vsize 864  refresh: 75  vid: 20337
(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): Ranges: V min: 56  V max: 75 Hz, H min: 30  H max: 81 kHz, PixClock max 140 MHz
[...]
(II) RADEON(0): Output VGA-0 using initial mode 1680x1050
after xf86InitialConfiguration
(**) RADEON(0): Display dimensions: (470, 300) mm
(**) RADEON(0): DPI set to (90, 101)

which looks perfect to me.

-- 
`If you are having a "ua luea luea le ua le" kind of day, I can only
 assume that you are doing no work due [to] incapacitating nausea caused 
 by numerous lazy demons.' --- Frossie