White screen on second monitor with X Screen (12.04)

Asked by Александар Андевски on 2012-05-03

I just installed Ubuntu 12.04 and I'm having a problem with my second monitor when I try to use them as seperate X Screens. When Ubuntu starts and I log in I first see the background for less than a second and then the second monitor becomes white and when I go on it with my mouse I get an "x" pointer. When I right click on that monitor I get a dropdown menu which is the same like on the working screen when I right click the background.

I have a NVidia GeForce GT240 card and the two monitors are connected through DVI and VGA ports. I tried uninstalling the default graphics drivers and downloading / installing the latest drivers from nvidia.com, but still nothing is fixed.

Any fixes?

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Status:
Solved
For:
Ubuntu xserver-xorg-video-nv Edit question
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Solved by:
Александар Андевски
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actionparsnip (andrew-woodhead666) said :
#1

Can you give the output of:

sudo lshw -C display; lsb_release -a; uname -a; dpkg -l | grep nvidia

Thanks

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Александар Андевски (a-andevski) said :
#2

*-display
       description: VGA compatible controller
       product: GT215 [GeForce GT 240]
       vendor: NVIDIA Corporation
       physical id: 0
       bus info: pci@0000:01:00.0
       version: a2
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
       configuration: driver=nvidia latency=0
       resources: irq:16 memory:fd000000-fdffffff memory:d0000000-dfffffff memory:ce000000-cfffffff ioport:cc00(size=128) memory:fea80000-feafffff
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04 LTS
Release: 12.04
Codename: precise
Linux add1ctusdesktop 3.2.0-24-generic-pae #37-Ubuntu SMP Wed Apr 25 10:47:59 UTC 2012 i686 i686 i386 GNU/Linux
ii nvidia-current 295.40-0ubuntu1 NVIDIA binary Xorg driver, kernel module and VDPAU library
ii nvidia-settings 295.33-0ubuntu1 Tool of configuring the NVIDIA graphics driver

Revision history for this message
Sonthun (abovethesun7) said :
#3

I have the same problem and after doing some searching it looks like it is pretty common. Maybe connected to this bug?
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/992725

Revision history for this message
Александар Андевски (a-andevski) said :
#4

After several days of researching / googling + working it out on IRC @ #ubuntu, I turned to a Twinview workaround which works perfectly for me now.

Revision history for this message
Luke Lewis (superluke) said :
#5

What was the workaround?! I can't find one...

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Александар Андевски (a-andevski) said :
#6

Just use Twinview instead of X Screens. Worked for me when I was on Ubuntu (switched now).

Revision history for this message
Luke Lewis (superluke) said :
#7

Actually after I posted that I changed to separate x-windows with Xinerama enabled, that worked perfectly. Now to get Wine games working in fullscreen... Thanks!