Can you run xresprobe nvidia (or xresprobe nv if you're using the open source driver) and paste the results here. Please also attach the result from running ddcprobe.
For me, on an amd64 with nvidia and triple-head, I got blank output from xresprobe, and ddcprobe segfaulted. -- [apport] xrandr crashed with SIGSEGV in XRRGetScreenInfo() https://bugs.launchpad.net/bugs/112722 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs