You said there are no visible effects; this error typically comes after your system has frozen - have you seen that kind of problem?
If you can reproduce this easily, please try the X driver in this PPA, which has a workaround that might lessen the issue: https://launchpad.net/~bryce/+archive/fig -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/761143 Title: GPU lockup (ESR: 0x00000001 IPEHR: 0x02000011) Right after reboot and login into Unity session an error message is appeared -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
