2

I tried to connect a VGA display to my Gentoo laptop and use multi-display. However, the two screens behave like one big screen instead of two separate ones. That is, if I maximize a window, it crosses the screens.

In Linux Mint Live CD, however, they act like two screens. I tracked down the problem to every level including KDE, X, udev, and kernel but I can't find the problem.

I've asked the question on http://forums.gentoo.org/viewtopic-p-7446050.html , but seems that no one read it. The only difference I see is that my xf86-video-intel seems to recognize my card incorrectly, and not reading EDID from display, and not using crtc.

However, I tried combinations of kernels, configs, downgraded drivers, removing the nVidia drivers, etc., but none worked. Also, if I click "identify outputs" in KDE, both "LVDS1" and "VGA1" will display on BOTH screens, but on LiveCD LVDS1 displays on my laptop and VGA1 displays on the external screen.

  • Why would this have happened?
  • Does anyone have any ideas?
0

OK, the problem is solved. I added USE="xinerama" globally and recompiled world. The affected packages includes but not limited to qtgui and gtk+, these should be the main packages that changes the result. So simpile...

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.