The HP Compaq LA2405wg is a 24” TFT monitor that works at 1920×1200: I use it as the external monitor of my new notebook (ASUS UL30A). Ubuntu 10.04 Lucid doesn’t have a xorg.conf file: it tried to get the correct resolution on the fly but it wasn’t able to guess the right resolution for the HP monitor. The following commands were helpful to set it up properly.
~$ gtf 1920 1200 60 # which output was
1920x1200 @ 60.00 Hz (GTF) hsync: 74.52 kHz; pclk: 193.16 MHz Modeline "1920x1200_60.00" 193.16 1920 2048 2256 2592 1200 1201 1204 1242 -HSync +Vsync
~$ xrandr # to get the output name (which was VGA1 in my case)
~$ xrandr --newmode "1920x1200_60.00" 193.16 1920 2048 2256 2592 1200 1201 1204 1242 -HSync +Vsync
~$ xrandr --addmode VGA1 "1920x1200_60.00"
~$ xrandr --output VGA1 --mode "1920x1200_60.00"
Dear Carlo,
I have a similiar problem. I am using ubuntu 10.04 and the same monitor. I followed your instructions. When I wrote: xrandr I got:
Screen 0: minimum 640 x 480, current 1024 x 768, maximum 1024 x 768
default connected 1024×768+0+0 0mm x 0mm
1024×768 0.0*
800×600 0.0
640×480 0.0
1920x1200_60.00 (0×126) 193.0MHz
h: width 1920 start 2048 end 2256 total 2592 skew 0 clock 74.5KHz
v: height 1200 start 1201 end 1204 total 1242 clock 60.0Hz
so I didn’t get the output name, and I can not follow the next steps. So, please if you have other way I would like know it.
P.
Do you use it within a notebook or with a desktop PC? Did you try VGA0?
Dear Carlo,
Thanks a lot for your response. I am using a server, no laptop. I used the word “default” before connected as the name and it work well. I could define the new mode. Now appear between the options of monitor preferences (at system/preferences/monitor) However when I try to use it, the message “the selected configuration for displays could not be applied, could not set the configuration for CRTC 262″. I can not fix the problem yet. I thanks in advance if you have other suggestion.
P.