[8.04->8.10] Xlib: extension "RANDR" missing on display ":0.0"

[soyatti]

i had the same issue on debian.
it was fixed by switching from Xinerama to TwinView (i have nvidia dual-head card).

[MobiusJedi]

Interesting. I have xinerama enabled with separate x on monitor and tv, but I only get 'Xlib: extension "RANDR" missing on display ":0.0"' when I open applications/files from terminal... (This is on a fresh install of 8.10)

[pneaveill]

Is this still active?

Not sure how to fix the problem, but can replicate the problem in Ubuntu 10.04 w/ dual head nvidia

Xlib:  extension "RANDR" missing on display ":0.0".
Xlib:  extension "RANDR" missing on display ":0.0".
RandR extension missing

but, when I attempt to run startupmanager from command line or system > admin I get this:

startupmanager
Xlib:  extension "RANDR" missing on display ":0.0".
Xlib:  extension "RANDR" missing on display ":0.0".
RandR extension missing
Traceback (most recent call last):
  File "/usr/sbin/startupmanager", line 54, in <module>
    main()
  File "/usr/sbin/startupmanager", line 51, in main
    SumGui()
  File "/usr/share/startupmanager/gtk_frontend.py", line 166, in __init__
    self.resolution = utils.get_resolution()
  File "/usr/lib/pymodules/python2.6/bootconfig/utils.py", line 159, in get_resolution
    return matches.group(1) + 'x' + matches.group(2)
AttributeError: 'NoneType' object has no attribute 'group'

[pneaveill]

bump?

[artichoke]

i had the same issue on debian.
it was fixed by switching from Xinerama to TwinView (i have nvidia dual-head card).

Which is fine unless the fact that TwinView can't rotate individual screens is a problem, in which case your only option is to use Xinerama, which clashes with RandR (and Composite!) which then causes these annoying

Xlib: extension "RANDR" missing on display ":0.0".

messages to be vomited on to the commandline.

[David Alfonso]

I'm experiencing the same problem with a GF7100GS nvidia card and also can't run "startupmanager". Nevertheless, as someone suggested, if I use TwinView it seems to work correctly (I don't know if Compiz works as I don't use it).

[JasonFWard]

I'm getting the error

Xlib: extension "RANDR" missing on display ":0.0".

too. But only after I enabled a 3rd monitor on a 2nd video card.

However, I have what I think might be a related problem. Several programs (Virtualbox, Skype, Aisleriot Solitaire, NX client, most RDP clients (but not all), Semantik and many others) cause my X to restart when they have the mouse pointer travel over their window.

Any ideas?

[chrisamiller]

You're going to want to take a look at this bug, which has affected a number of people using Xinerama and Maverick:
https://bugs.launchpad.net/xorg-server/+bug/650539

Specifically, you're going to want to install this patched version of xorg-xserver until such time as the bugfix makes it into the ubuntu repos.
https://launchpad.net/~jared-bunting...xserver-650539

[JasonFWard]

GREAT! Thanks, I can now use VirtualBox

[JasonFWard]

You're going to want to take a look at this bug, which has affected a number of people using Xinerama and Maverick:
https://bugs.launchpad.net/xorg-server/+bug/650539

Specifically, you're going to want to install this patched version of xorg-xserver until such time as the bugfix makes it into the ubuntu repos.
https://launchpad.net/~jared-bunting...xserver-650539

So this was going to be fixed, was it ever fixed? And if so, how do I make the fix work in 11.10