Re: Acer AL2223W desktop too wide

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On Tue, 06 Mar 2007 01:40:50 +0000
Ryan Li <[email protected]> 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

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:

(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

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:

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

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 ~

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