I was hit again by this issue too I discover that the X server lockup only when my external usb mouse is disconnected
USB mouse connected -> no lockup USB mouse disconnected -> lockup -- Xorg hangs due to EQ overflowing https://bugs.launchpad.net/bugs/276518 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
