7

I am testing out 12.04 and am using Xinerama = 1 in xorg.conf.

When I do this, everything seems to work, except that some applications end up with strange looking buttons.

Please see this image: enter image description here Click here for an enlargement of the image.

As soon as I change the Xinerama to 0, I lose my quad screen, but all applications look normal again.

Why does this happen and is it possible to fix this?

I'm using gnome classic on Ubuntu 12.04 because I couldn't get Unity2D or Unity3D to work over 4 screens.

oshirowanen
  • 3,937
  • 23
  • 76
  • 104
  • You need to include some more details. ATI or Nvidia(or other). Model, etc. It's a good question, and I hope it gets a solid answer. We need details. – RobotHumans May 01 '12 at 21:30
  • Thank you. Since you noted Unity3d, my workaround doesn't work for you. It can be accomplished with Xinerama if don't need compositing/effects, but you have to want to give up 3d. I hope you get a proper answer. – RobotHumans May 01 '12 at 21:47
  • To be honest, I don't mind giving up Unity3D and compositing/effects etc in order to get all 4 monitors working! – oshirowanen May 01 '12 at 21:54
  • What does not work? Clarify this. Are the screens showed in the Nvidia settings tool? – thonixx May 01 '12 at 21:55
  • Thanks, I've added clarification to the end of my question above. – oshirowanen May 01 '12 at 21:57
  • Ubuntu display manager does not work with Nvidia, just with ATI. But you don't see the 2 more monitors in the settings area where you could move them around in Nvidias tool, don't you? _BTW_ the youtube video is not real it's just a design mockup. But you can connect as many monitors as you like and your graphic card supports. – thonixx May 01 '12 at 22:23
  • I seem to be able to connect 2 monitors to 1 card, or 1 monitor each to each card. Both methods work, I just can't connect all 4 monitors. – oshirowanen May 01 '12 at 22:30
  • So if I return my nvidia cards and get ati cards, will it all work as it should? – oshirowanen May 01 '12 at 22:33
  • Note that that 6 monitor demo was probably on an AMD Radeon Eyefinity card, which can support 6 DisplayPort outputs from a single card. That is probably somewhat simpler to get working than 2 cards driving 2 monitors each. – James Henstridge May 02 '12 at 00:21
  • @James Henstridge, point taken. So how do I configure what I have? – oshirowanen May 02 '12 at 08:09
  • I don't have any experience with doing what you want with multiple cards. I was just pointing out that the 6 screen demo didn't necessarily imply that your problem was simple. – James Henstridge May 02 '12 at 09:37
  • I have got the screens to work, but I seem to have a theme related problem which disappears as soon as I get rid of the quad screen and revert back to 1 screen. It happens when I switch between xinerama = 1 and xinerama = 0. – oshirowanen May 04 '12 at 20:56
  • 1
    Just to link your bug report for reference: https://bugs.launchpad.net/ubuntu/+bug/994835 – desgua May 04 '12 at 23:22

1 Answers1

1

It's a workaround for themes not applying in Cinammon with Xubuntu, but you could try: setting a GTK3 theme as default in XFCE configs, and, login again in Cinnamon from here.

Different problem, but it might work to get the theme to apply.

I don't know what DE you're using, but it's definitely not Unity.

RobotHumans
  • 29,190
  • 4
  • 76
  • 114