Problem with dual head, resulotion monitor


I’m working with a Lenovo W500 laptop, and today I got a Iiyama ProLite LCD monitor.
I’ve changed the settings with Yast/Sax2 to get a dual head mode. The resolution of my monitor is 1920 * 1080, so I configured it that way (LCD 1920X1080@60HZ). In Sax2 the settings seems to be good. But when I test this, the test-display says that the resolution of the monitor is 1680 * 1050. When I save the settings and restart, the resolution is set on 1680 * 1050 although Sax2 still says it’s 1920 * 1080. Can anyone help me with this?
The grapical card is a ATI Mobility FireGL V5700, with 512 MB

working with an old T40 having nearly the same problem. My 1680x1040 additional monitor was got detected, but set to 1024x768.
I just simple removed the /etc/X11/xorg.conf file (so renamed to xorg.conf.deleted maybe it is needed later on again :slight_smile: and started YAST / SAX2 again to configure the screens.
Now the right resolution is set and it works perfect…


Thank you for the answer, I tried it at once. Alas, it didn’t work for me…

Sorry, you are fully right, now my external monitor works with the right solution, but the laptop monitor have a wrong one.
(I’m at the moment working on the same problem and gave you too early feedback, sorry)

The main problem is visible even with xrandr, now it shows only 1280x960 in the list. But the monitor have 1680x1050 and I cannot overwrite this with “xrandr --size”.

I’m also lost>:(

Now, I’m “on track” again rotfl!

After spending the whole day. its now working - really!
So the problem was even visible if you call “xrandr”, myone only showed one resolution 1280X960 instead of 1680X1050 and others. Therefore nothing else could be selected.
don’t ask my why it only finds one resolution…
Even when I did an “xrandr --output VGA-0 --mode 1680x1050” it quit with “xrandr: cannot find mode”
So after some research I found out that the following helps:

cvt 1680 1050 #to find out a valid modline
xrandr --newmode "1680x1050_60.00"  146.25  1680 1784 1960 2240  1050 1053 1059 1089 -hsync +vsync  #to create a new mode with the result of the previous command
xrandr --addmode VGA-0 1680x1050_60.00  #to assign the new mode to the right display
xrandr --output VGA-0 --mode 1680x1050_60.00 --right-of LVDS  #to switch to the new mode

The only problem left is: where to put this stuff to prevent not entering it always again, but that should be simple.