So I’ve just started using Krita as an alternative to Photoshop.
While using it, I noticed the image sometimes appears a bit fuzzy, so I went to check if it had anything to do with hardware acceleration.
In the settings menu the checkbox for Canvas Graphics Acceleration is greyed out.
I’m running an Nvidia GTX 1650, and I have the drivers installed, do I need anything else?
I think most likely you need CUDA, try to install it:
cuda
I’m not on Endeavour at a moment, but on Manjaro it also has lib32-cuda
I don’t remember if reboot is required, but obviously close Krita before update 
Ouch, 5.5 gigs to install cuda??
Seems a bit much
wtf 
can’t be…
Oh wait, you’re on free drivers?
CUDA would require proprietary nvidia drivers
Yeah wait…It’s something wrong here 5,5 Gb must be SDK not runtime.
Sorry, try those, should be enough:
opencl-nvidia
lib32-opencl-nvidia
opencl-headers
ocl-icd
And they require proprietary driver installed still
problem solved!
Went ahead with the ‘5gb’ install, but it took under a minute, so it was probably just a bug…
Not sure i still think it must be SDK and those opencl should be enough…
Well anyways, glad it worked 
Yup!
The fuzzyness is gone, so I don’t really care what happened under the hood 
Well if by any chance you’ll have 5,5 Gb update next time try just opencl
probably a good idea, I’ll do that now 