https://bugzilla.kernel.org/show_bug.cgi?id=206225
--- Comment #7 from Christoph Marz (derchiller-foren@online.de) --- (In reply to Ilia Mirkin from comment #6)
I see you have nouveau.config=PCRYPT=0 in your kernel config. Why did you add this -- was there some kind of issue with the engine? Did someone in #nouveau tell you to do it to help some issue?
Hello Ilia,
I had found a bug report (https://bugs.freedesktop.org/show_bug.cgi?id=58378) dealing with a similar issue, and there you suggested to try that option (https://bugs.freedesktop.org/show_bug.cgi?id=58378#c46), and it seemingly solved the issue, so I gave it a try, but removed it after I noticed that it had no effect at all.
It's normally used for copy acceleration on G96 (which would, in turn, be used to copy off any vram data to ram on suspend).
The reason I ask is that starting with kernel 4.3, that will no longer have the effect of disabling PCRYPT. The new config to achieve that would be nouveau.config=cipher=0.
Ok, thanks for clarification. Copy acceleration sounds good, is there any downside?
Note that for G96, I don't think anything in firmware-misc-nonfree would affect it either way.
I will uninstall that package and report back.
BTW: No problems with 5.4.13 so far.