This tutorial shows how to install the Acer AL2223W LCD monitor with Linux.
Author: M. Feier, February 22, 2007
Hard/Software used: Acer AL2223W, ATI Radeon 9600, Xorg 7.1 (Radeon open source driver)
The tested X server environment does not recognize the monitor automatically. This means that only smaller resolutions can be used. Of course we want the X server to use the full resolution of the monitor (1680x1050).
The problem can be solved by extending the "Monitor" Section of the X server configuration (usually /etc/X11/xorg.conf). The following lines must be added to it:
Section "Monitor" Identifier "al2223w" HorizSync 31.0 - 81.0 VertRefresh 56.0 - 75.0 Option "DPMS" Modeline "1680x1050" 146.2 1680 1784 1960 2240 1050 1053 1059 1089 EndSection
The modelines were found using the guide in the FreeBSD handbook. The "Screen" section also needs to be updated accordingly to use the new mode:
Section "Screen" Identifier "Screen 1" Device "radeon" Monitor "al2223w" DefaultDepth 24 Subsection "Display" Depth 8 Modes "1680x1050" "1280x1024" "1024x768" "800x600" "640x480" ViewPort 0 0 EndSubsection Subsection "Display" Depth 16 Modes "1680x1050" "1280x1024" "1024x768" "800x600" "640x480" ViewPort 0 0 EndSubsection Subsection "Display" Depth 24 Modes "1680x1050" "1280x1024" "1024x768" "800x600" "640x480" ViewPort 0 0 EndSubsection EndSection
This should do to it. Attached is the authors xorg configuration file. Rename it to "xorg.conf" if you would like to use it. Feel free to modify or adapt it to your system.
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