Ok, I tried to replicate that bug, but nothing so far.
I downgraded from 310.19 (from nvidia) to 304 (package), then installed the 310 (package).
All my 3 screens worked, the configuration was kept.
I did, however, get an error during the 310 install. Re-running apt-get install seemed to install properly. The 304 installed with no problems.
Seems like it might be problem with the package.
I'll try to get it triaged.
Ok, I tried to replicate that bug, but nothing so far.
I downgraded from 310.19 (from nvidia) to 304 (package), then installed the 310 (package).
All my 3 screens worked, the configuration was kept.
I did, however, get an error during the 310 install. Re-running apt-get install seemed to install properly. The 304 installed with no problems.
Seems like it might be problem with the package.
I'll try to get it triaged.