Re: xorg and 1280x800

[richard@the-place.net]

> On Tue, 2006-11-28 at 13:17 +0000, richard@the-place.net wrote:
>>> Quick question: Has anybody here succeeded to get 1280x800 resolution
>>> with
>>> a widescreen laptop?
>>> I have an Acer Aspire 1640Z which has, in common with a few others,

> all I had to do to get Xorg working with
> 1280x800 was add a modeline on the monitor section of my xorg.conf:
>
> ModeLine    "1280x800" 83.9 1280 1312 1624 1656 800 816 824 841
>

Thanks Evgeni, Digby, Philip, and Pedro.

I had 915resolution installed, but had failed to enter the x and y
resolutions in the /etc/915resolution config file.  I've edited that and
restarted X to no avail -- still get 1024x768.  I had previously tried
Pedro's modeline.  Now I tried it again.  Still no change.  Xorg.0.log
shows a lot of stuff, but the key is always this bit:

(WW) I810(0): config file hsync range 45.7143-50.5263kHz not within DDC
hsync ranges.
(II) I810(0): Widescreen TFT Monitor: Using hsync range of 45.71-50.53 kHz
(II) I810(0): Widescreen TFT Monitor: Using vrefresh value of 60.00 Hz
(II) I810(0): Not using mode "1280x800" (no mode of this name)
(--) I810(0): Virtual size is 1024x768 (pitch 1024)
(**) I810(0):  Built-in mode "1024x768"

man 915resolution says nothing useful, except pointing me to
/usr/share/doc/915resolution/README.Debian. This README suggests using
'915resolution -l' to list its available resolutions, and indeed this
confirms it has not got the native resolution for the Acer screen:

# 915resolution -l
Intel 800/900 Series VBIOS Hack : version 0.5.2

Chipset: 915GM
BIOS: TYPE 1
Mode Table Offset: $C0000 + $269
Mode Table Entries: 36

Mode 30 : 640x480, 8 bits/pixel
Mode 32 : 800x600, 8 bits/pixel
Mode 34 : 1024x768, 8 bits/pixel
Mode 38 : 1280x1024, 8 bits/pixel
Mode 3a : 1600x1200, 8 bits/pixel
Mode 3c : 1920x1440, 8 bits/pixel
Mode 41 : 640x480, 16 bits/pixel
Mode 43 : 800x600, 16 bits/pixel
Mode 45 : 1024x768, 16 bits/pixel
Mode 49 : 1280x1024, 16 bits/pixel
Mode 4b : 1600x1200, 16 bits/pixel
Mode 4d : 1920x1440, 16 bits/pixel
Mode 50 : 640x480, 32 bits/pixel
Mode 52 : 800x600, 32 bits/pixel
Mode 54 : 1024x768, 32 bits/pixel
Mode 58 : 1280x1024, 32 bits/pixel
Mode 5a : 1600x1200, 32 bits/pixel
Mode 5c : 1920x1440, 32 bits/pixel

So that explains why it doesn't work.  I shall have to wait for an updated
version too, I suppose.  A pity, as I work with CAD and the distortion is
misleading.  I don't expect Linux laptops to have working sound or
hibernation, but I did expect the screen to work. No matter, I'll draw on
the old Thinkpad 600E.

Thanks again, guys.

-- 
richard