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Old 01-16-2011, 04:51 PM   #1
grumpyg
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Question Extended desktop virtual screens and a usb2vga adaptor


OS Linux Mint 10, Intel graphics, SIS usb2vga adaptor.

I have three screens. The netbook screen with the extended desktop onto a vga screen and a third screen connected to a usb2vga adaptor.

The extended desktop screens without the usb2vga adaptor works perfectly. I can maximise applications to either screen perfectly without them spreading across both screens. As soon as I connect the third screen via the usb2vga adaptor maximising an application causes it to spread across both screens yet the third usb2vga screen has it's own virtual desktop environment.

I have tried numerous versions of my xorg.conf file that I have generated to incorporate the usb2vga adaptor to make this work and regardless of what xrandr commands I send including changes to the gconf settings nothing seems to solve the issue.

It seems odd that I can create a panel and position it left, right, top or bottom of the second monitor of the extended desktop and it sticks to the screen dimensions yet I can't get any application to do the same when there is a third screen connected through the usb2vga adaptor.

I don't use Compiz, it crashes my system and I don't want separate workspaces I want the extended desktop with the two separate virtual screens to fit on the two separate screens that form part of the extended desktop.

With Xinerama deprecated what other options do I have.

Any ideas to solve my problem gratefully received.
 
Old 01-18-2011, 05:31 AM   #2
adamk75
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Even though it's deprecated, xinerama still has the same functionality it did before, and it's the only way to get an extended desktop when using multiple monitors connected to more than one video card.

Adam
 
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Old 01-18-2011, 12:47 PM   #3
grumpyg
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Quote:
Originally Posted by adamk75 View Post
Even though it's deprecated, xinerama still has the same functionality it did before, and it's the only way to get an extended desktop when using multiple monitors connected to more than one video card.

Adam
Thanks for the info.

If I use Xinerama am I going to have to create an xorg.conf file with all the parameters I want to use with no ability to change the extended desktop settings on the fly?
 
Old 01-18-2011, 01:16 PM   #4
adamk75
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Yes.

Adam
 
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Old 01-18-2011, 05:06 PM   #5
jefro
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I never saw a usb to vga work in linux.
 
Old 01-18-2011, 06:50 PM   #6
grumpyg
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Originally Posted by jefro View Post
I never saw a usb to vga work in linux.
I have the usb2vga working perfectly all be it a little slow but no different than it was in Windows XP, it did however require some serious effort to configure the xorg.conf file to make it work. The only problem I have now is that applications in the extended desktop don't "snap" to full screen properly when maximising them, they spread across both screens.

Since my last post I have tried to rebuild the xorg.conf file to encompass all the parameters necessary incorporating Xinerama and failed. So I have installed the patch (which I was hoping not to do) https://launchpad.net/~jared-bunting...xserver-650539 but this hasn't worked for whatever reason.

It is a shame that something so easy to do in Windows XP appears to be almost impossible to achieve in Linux. It won't make me return to XP but it is a nuisance to say the least.
 
  


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