On 12/27/2011 06:34 PM, monitorxxx wrote:
Hi, I have Arch Linux in this system:
-video card: nvidia 6150
-monitor 1: LG, 1440x900 (right side)
-monitor 2: Samsung, 1360x760 (left side)
-desktop environment: Lxde
But the problem is that:
1) no matter how hard I try, write to xorg.conf, set up and reboot, the
monitors' positions are always changed in NVIDIA X Server Settings (the
graphical tool).
Does the physical position of the screens swap too? I.e., does the
blank monitor change when you restart X?
There was a bug fixed in version 290.10 of the driver that would cause
displays to get swapped when restarting X servers, but it should have
only affected secondary GPUs.
The nvidia-settings control panel may not show the correct positions of
the screens in separate X screen mode because the X server doesn't
provide a way for X clients to know their relative positions. My patch
to fix it ballooned into a much larger change during code review and I
never got around to finishing it.
2) the screen now (Lxde) is shown in monitor 1 (ok), but monitor 2 is
completely black and when I put the mouse cursor there, it changes to the
defauld Gnome mouse cursor (the 'X') and when clicking with the right button
anywhere in the screen (of monitor 2) nothing happens.
I want both monitors running the same Desktop Environment (in this case,
Lxde), with "separate screens" and when a program is executed in one screen,
it does not open in the other. And of course, to be configured in the
positions they are on the table (Samsung at the left, LG at the right).
I'm not familiar with LXDE, but desktop environments have recently been
losing proper support for multiple X screens. For example, KDE 3 worked
great with multiple X screens but KDE 4 shows the
black-screen-and-giant-X-cursor problem you're describing with LXDE. I
would suggest contacting LXDE's support community to ask for proper
multiple X screen support.
Desktop environments aren't the only ones simply ignoring multiple X
screens. For example, Chrome has had a bug since at least 2009 that
prevents you from opening new windows on the correct screens:
http://code.google.com/p/chromium/issues/detail?id=15781
I believe Firefox still has a similar problem, though I haven't tried it
recently.
Do you know how to solve this problem?
What additional information or log files do you need?
Thanks!
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