Thanks, could you try using the "intel" driver instead of the now obsolete i810? Apparently the option should still work, altough upstream said that it's only a hint to the server, and seeing no effect "is perfectly legal behaviour" :)
-- Option "BackingStore" "True" is not working https://bugs.launchpad.net/bugs/230916 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