Stuttering and Laggy monitor on "External Only" mode

daowanijo · 1 August 2021 22:57

I have the same problem as Despair. This is fascinating its necessary completely disable the other GPU.
Hopefully NVIDIA will fix in the future.

KDE seems to have issues with optimus manager. Fix is to run
prime-offload at init.

github.com/Askannz/optimus-manager

GPU setup was initiated but Xorg post-start hook did not run

opened 10:23AM - 20 Dec 20 UTC

karaolidis

bug

Hello! I've been `optimus-manager` for a couple of months now with no issues, bu…t lately I can't seem to be able to switch modes. If I run `optimus-manager --switch [whatever]`, my display turns off for a couple of seconds, I get logged out and once I log back in and run `optimus-manager --print-mode`, I get the following error: ``` ERROR: a GPU setup was initiated but Xorg post-start hook did not run. Log at /var/log/optimus-manager/switch/switch-20201220T121244.log [...] Cannot execute command because of previous errors. ``` The log: ``` [29] INFO: # Xorg pre-start hook [29] INFO: Previous state was: {'type': 'pending_pre_xorg_start', 'requested_mode': 'hybrid', current_mode': 'nvidia'} [29] INFO: Requested mode is: hybrid [54] INFO: Loaded extra integrated-gpu Xorg options (0 lines) [54] INFO: Loaded extra nvidia-gpu Xorg options (0 lines) [54] INFO: Writing to /etc/X11/xorg.conf.d/10-optimus-manager.conf [54] INFO: Writing state {'type': 'pending_post_xorg_start', 'switch_id': '20201220T121244', 'requested_mode': 'hybrid'} [55] INFO: Xorg pre-start hook completed successfully. ``` I am using KDE Plasma with SDDM and I'm on a Dell G5 5587 with a GTX1060Max-Q running Arch. I would appreciate any help you guys can give me!

Unfortunately for me I get stuck
A GPU switch from integrated to nvidia is pending. Log out and log back in to apply. Current GPU mode : integrated

Even after logging out multiple times same, only uses iGPU but dGPU is at 24W.

Update:
Got it working after commenting out the two lines in /etc/sddm.conf per