I have a really weird problem with my laptop ASUS K53SV. It has two graphics card (Intel + Nvidia) and nvidia optimus, but I'm actually using just the intel one. My operating system is Fedora 16. When I connect my external screen, a Samsung 2033HD, I have problems with it. It's shaking, like it had some refresh rate problems. The actual resolution is 1600x900, refresh rate 60Hz.
I tried to change the VGA cable, but the problem is still the same.
The point is that the same monitor works without any problem at the same resolution with my netbook (an ASUS 1215P with Fedora as well and an intel graphic card), and the same laptop doesn't have any problem if I connect it to a different screen (samsung 24 inch 1920x1080).
I just tried to boot with two different distributions: with Fuduntu I have the same problem (I suppose because it's based on Fedora), while with Ubuntu the screen is working fine at 1600x900.
The following is my
xrandr output. I already tried without success to change the refresh rate.
Screen 0: minimum 320 x 200, current 2966 x 900, maximum 8192 x 8192 LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 193mm 1366x768 60.0*+ 1024x768 60.0 800x600 60.3 56.2 640x480 59.9 VGA1 connected 1600x900+1366+0 (normal left inverted right x axis y axis) 443mm x 249mm 1600x900 60.0*+ 1280x1024 75.0 1440x900 59.9 1280x800 74.9 59.8 1152x864 75.0 1024x768 75.1 70.1 60.0 832x624 74.6 800x600 72.2 75.0 60.3 56.2 640x480 72.8 75.0 66.7 60.0 720x400 70.1 HDMI1 disconnected (normal left inverted right x axis y axis) DP1 disconnected (normal left inverted right x axis y axis)
I can't believe it, what should I do/try?