It appears you now have only a GeForce GT 630 installed, using the nouveau driver.
If you want to report a bug against your Radeon card then please: 1. Reinstall that radeon card. 2. Boot the machine and instead of logging in hit Ctrl+Alt+F4. Now log into the text terminal. 3. Run this command to send us new system information: apport-collect 1780860 ** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu) ** Changed in: xorg-server (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1780860 Title: Xorg freeze To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1780860/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs