Performance Issues with latest DRM

Hi,

Since I upgraded the drm drivers about a week ago I’ve been having issues. Either I can get XFCE performing correctly with the Intel GPU or suspend but not both. I was able to roll back to and older Current version 1600004 and get old versions of the DRM drivers installed which get it working. Basically it was been about a week of painful trial and error working out what is going on.

1. XFCE is unusably slow when switching to laptop only screen. It works perfectly when using an external screen. Being a hybrid graphics laptop I’m assuming the Intel drivers aren’t working and the Nvidia is working perfectly fine.
2. If using XFCE suspend no longer works. 

Curiously it seem to work ok on KDE Plasma 6. 

I’m currently running Current with drm-66-kmod and the equivalent Nvidia drivers. Curiously installing older versions of the Nvidia drivers will get XFCE performing better however it then breaks suspend. I’m suspecting something is going wrong with the switchover from Nvidia to intel drivers. Quite often when you disconnect the external screen you get a black screen on the laptop where the mouse still works but nothing else. I’ve had this before when hybrid graphics mode is not working correctly. If I plug in the and disconnect the external screen it tends to work the second time. This wasn’t happening before.

Before updating the DRM drivers it was working very well with XFCE with suspend working most of the time.

Is there a way I can work out what is actually failing. I’ve looked in /var/log/messages but so far haven’t found any errors that would give any idea of what’s going on.


Ben Hutton
[email protected]
0434 211 939