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System suddenly becomes slow as hell, all i can do is press the shutdown button and wait for it to automatically shutdown, I have a feeling it might be caused by NVIDIA
Here is the journalctl log
Can anyone help?
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What makes you feel it's nvidia? Did you check CPU and RAM load at those times?
There're two GPUs, how do you (intend to) use them?
Please post your xorg.conf.
What's suspicious in the journal (w/o *any* indication which time frame actually covers the "extremely slow" situation) is the impressive amount of gdm-x-session processes that seem to be started almost in desperation - this *may* relate to the presence of two identical nvidia GPUs, only one of which has an output attached.
Notably
lug 05 13:43:07 desktop /usr/lib/gdm-x-session[1260]: (II) NVIDIA(0): Setting mode "NULL"
…
lug 05 13:43:07 desktop gnome-shell[1326]: meta_display_get_monitor_geometry: assertion 'monitor >= 0 && monitor < n_logical_monitors' failed
lug 05 13:43:07 desktop gnome-shell[1326]: meta_display_get_monitor_geometry: assertion 'monitor >= 0 && monitor < n_logical_monitors' failedOnline