I'm a bit confused - according to Comment 19, the "shifting" still happens after uninstalling drm-kmp-default, yet according to Comment 59, it does not. If, after (as described in Comment 39) removing the package, then locking it, and then *also* rebooting, you still see the issue, then please feel free to REOPEN this ticket. In that case, please also tell us how to reproduce it - i.e. which desktop environment are you using? Is compositing enabled? ...