"upgrade your system" just means to run: sudo apt update sudo apt full-upgrade
And yeah it sounds like the retracing service is confused between nvidia-340 and nvidia-390. If that happens again then please report a bug about that to the relevant package you have installed with something like: ubuntu-bug nvidia-driver-390 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1867663 Title: nvidia-persistenced assert failure: malloc(): invalid size (unsorted) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-390/+bug/1867663/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
