Having the same issue, supprised it hasent been addressed by the arch wiki community yet, as its been about a month so far and makes linux almost un-usable on my main system.
The old kernel module load options NVreg_RegisterForACPIEvents and NVreg_EnableMSI seem to have been removed, this was the only (known) way to prevent waking from suspend causing massive lag across the entire DM.
Another possible angle to try and fix it from is preventing the ACPI power management from varying power to PCIe devices, I think, however this is not an overly optimal solution, and not particularly well documented in terms of how to achieve it.
No noticeable differences, gpu running at the same clocks as before.
Where is this performance loss noticeable, desktop, games?
Maybe install and start acpid.
Ok, some things to check:
Does top display something eating your CPU?
run
watch -n1 cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_cur_freq
then move around a window and see if it scales up properly.
Does restarting/zapping X put it back to normal operation?
Adding that caused boot issues, i wasnt getting anything other than the grey background from GDM, tried loggin using other method but gnome-shell refused to work, i undid the fix you provided through livecd
Yes , sorry, Gnome/Mutter is now completely bugged
[url]https://bugzilla.gnome.org/show_bug.cgi?id=792643[/url]
You could have just switched to VT and log in normally.
Due to the current bugs with Gnome and the Nvidia driver it’s just hard to debug your problem.
Nvidia has nothing to do with it, it’s a plain Gnome issue. I’d rather put my hopes into Ubuntu devs since they switched to Gnome as their main DE. Gnome devs are rather uncooperative to fix even simple things.
Just think I should jump in again and reiterate that I have the exact same issue (as detailed for older versions of the Nvidia drivers on the arch wiki page linked), and run i3wm with Arch.
The problem does not exist on my laptop with a near identical arch setup but without NVIDIA drivers.