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Re: Acer AL2223W desktop too wide



On Tue, 06 Mar 2007 01:40:50 +0000
Ryan Li <li_international@xxxxxxxxxxx> wrote:

> please let me know if you find out some other way to fix this problem!

Ok, after fiddling with this for most of the day I have finally figured this
out.

There are two factors here.  The modeline, and the 915resolution setting.  Both
have to be present and correctly set.

Here is a complete set of instructions to make an Acer AL2223W 22" monitor work
with Fedora Core 6 and an Intel 915G video chipset.

First I installed 915resolution as it wasn't already here:

yum install 915resolution

Then I created a modeline from the EDID information reported
in /var/log/Xorg.0.log

Here is the relevant section of the Xorg.0.log:

QUOTE:
(II) I810(0): Supported additional Video Mode:
(II) I810(0): clock: 149.0 MHz   Image Size:  474 x 296 mm
(II) I810(0): h_active: 1680  h_sync: 1784  h_sync_end 1960 h_blank_end 2240 h_b
order: 0
(II) I810(0): v_active: 1050  v_sync: 1053  v_sync_end 1059 v_blanking: 1089 v_b
order: 0
(II) I810(0): Ranges: V min: 56  V max: 76 Hz, H min: 31  H max: 82 kHz, PixCloc
k max 150 MHz
(II) I810(0): Monitor name: AL2223W
(II) I810(0):  ACER
END OF QUOTE

Now here is my modeline:

 Modeline "1680x1050" 149 1680 1784 1960 2240 1050 1053 1059 1089

Note that it consists of the mode name, then the clock rate, then the four
numbers from the h_ line, then the four numbers from the v_line, in order.

Put this modeline as the last line in the Monitor section in /etc/X11/xorg.conf

Add "1680x1050" to the Modes line of the Screen section in /etc/X11/xorg.conf.

Now you have to put the proper settings in /etc/sysconfig/915resolution

Here is what it should be:

QUOTE
# Mode to overwrite
 RESOLUTION="58 1680 1050 32 2240 1089"
END OF QUOTE

The numbers consist of the mode to overwrite in the bios, the resolution that
you want (x and y), the bits per pixel, h_blank_end and v_blanking from the
Xorg.0.log file.

That's it.  Reboot and it works dandy.


-- 
MELVILLE THEATRE ~ Melville Sask ~ http://www.melvilletheatre.com


B and H Foto and Electronics Corp.

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