Upgrade to 18.04 caused wrong graphics driver to be installed

[C. Jeffery Small]

Upgrading Xubuntu 17.10 to 18.04
Using Nvidia Quadro K4000 Graphics Card with proprietary driver and dual screens

After the upgrade, which went smoothly, only one screen was recognized and the system was almost unusable. The Xorg process was running wild, consuming almost all the CPU. It was difficult to move the cursor and all screen updates were incredibly slow. I suspected the graphics driver and saw that the Nvidia driver had been replaced with the X.Org Nouveau open source driver. I checked the available drivers with:

7-> ubuntu-drivers devices
== /sys/devices/pci0000:00/0000:00:03.0/0000:04:00.0 ==
modalias : pci:v000010DEd000011FAsv000010DEsd0000097Cbc03sc00i00
vendor : NVIDIA Corporation
model : GK106GL [Quadro K4000]
driver : nvidia-driver-390 - distro non-free recommended
driver : nvidia-340 - distro non-free
driver : xserver-xorg-video-nouveau - distro free builtin

After reinstalling the proprietary driver with the command:

8-> sudo apt install nvidia-driver-390

and rebooting the system, everything was back to normal.

I have had similar driver replacement problems with past upgrades. Why doesn't the upgrade register and reinstall the proper graphics driver? And why is the default driver so abysmal with a standard Nvidia card? This should be fixed in future upgrades.

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1775347/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[C. Jeffery Small (loyhz2ay-jeff-h670zbts)]

The update status link in the above comment does not work. I don't see an option on this page to update/edit the status.

This seems like an installation issue and not something related to a package, but if I had to select a package related to this, I would say:

nvidia-driver-390 390.48-0ubuntu3 NVIDIA driver metapackage

I hope that helps and that someone can assign this info to the package section.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.