package xserver-xorg-video-nvidia-430 430.26-0ubuntu0.18.04.2 failed to install/upgrade: trying to overwrite '/usr/share/X11/xorg.conf.d/10-nvidia.conf', which is also in package xserver-xorg-video-nvidia-418 418.74-0ubuntu0~18.04.1

How can I reproduce the problem?

I tried the following using a clean chroot:

1) I removed the "restricted" section from my /etc/apt/sources.list, and updated the apt-cache (or installing 418 it would be impossible)

2) I installed the 418 driver (using the nvidia-driver-418 metapackage). It is the 418.74-0ubuntu0~18.04.1 version which I copied from ppa:oem-solutions-group/nvidia-driver-staging into the following PPA, for easy access (since it was superseded in the original PPA):
https://launchpad.net/~albertomilone/+archive/ubuntu/nvidia-select

3) I re-added the "restricted" section in my /etc/apt/sources.list, and updated the apt-cache.

4) I did a dist-upgrade, and I could not reproduce the problem, since the upgrade from 418 to 430 went smoothly.

I can not reproduce this issue by stock Ubuntu either.
However I can keep seeing this issue in the OEM image.
Here is the log.

I figure out what is going on.

Preparing to unpack .../29-xserver-xorg-video-nvidia-430_430.26-0ubuntu0.18.04.2_amd64.deb ...
Unpacking xserver-xorg-video-nvidia-430 (430.26-0ubuntu0.18.04.2) ...
dpkg: error processing archive /tmp/apt-dpkg-install-xzOXIn/29-xserver-xorg-video-nvidia-430_430.26-0ubuntu0.18.04.2_amd64.deb (--unpack):
 trying to overwrite '/usr/share/X11/xorg.conf.d/10-nvidia.conf', which is also in package xserver-xorg-video-nvidia-418 418.74-0ubuntu0~18.04.1
Preparing to unpack .../30-xserver-xorg-video-nvidia-418_430.26-0ubuntu0.18.04.2_amd64.deb ...
Unpacking xserver-xorg-video-nvidia-418:amd64 (430.26-0ubuntu0.18.04.2) over (418.74-0ubuntu0~18.04.1) ...

xserver-xorg-video-nvidia-418 needs to be upgraded before installing xserver-xorg-video-nvidia-430 or it will conflict with each other.

There is no upgrading issue when using nvidia-graphics-drivers-430 430.50-0ubuntu1~0.18.04.3 on ppa:albertomilone/lp1847979.
However xserver-xorg-video-nvidia-418 is removed and xserver-xorg-video-nvidia-430 is not installed.

Regarding comment #5, xserver-xorg-video-nvidia-430 depends on xserver-xorg-core so it is not installed.
This platform is using xserver-xorg-core-hwe-18.04 instead.

Sorry, I based the changes off the wrong code branch. Please give nvidia-graphics-drivers-430_430.50-0ubuntu1~0.18.04.4 a try:

https://launchpad.net/~albertomilone/+archive/ubuntu/lp1847979

nvidia-graphics-drivers-430 430.50-0ubuntu1~0.18.04.4 from ppa:albertomilone/lp1847979 works fine without this issue.

Great, I'll make sure to commit and backport the fix.

Hello Shih-Yuan, or anyone else affected,

Accepted nvidia-graphics-drivers-430 into bionic-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/nvidia-graphics-drivers-430/430.50-0ubuntu0.18.04.2 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested and change the tag from verification-needed-bionic to verification-done-bionic. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-bionic. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

I enabled bionic-proposed channel to upgrade the system and there is no confliction.

This bug was fixed in the package nvidia-graphics-drivers-435 - 435.21-0ubuntu3

---------------
nvidia-graphics-drivers-435 (435.21-0ubuntu3) focal; urgency=medium

  * debian/templates/control.in:
    - Add Conflicts and Replaces to xserver-xorg-video-nvidia-#FLAVOUR#.
      This makes sure that upgrading from older driver series does not
      fail (LP: #1847979).

 -- Alberto Milone <email address hidden> Wed, 23 Oct 2019 15:07:10 +0200

This bug was fixed in the package nvidia-graphics-drivers-435 - 435.21-0ubuntu0.18.04.2

---------------
nvidia-graphics-drivers-435 (435.21-0ubuntu0.18.04.2) bionic; urgency=medium

  * debian/templates/control.in:
    - Add Conflicts and Replaces to xserver-xorg-video-nvidia-#FLAVOUR#.
      This makes sure that upgrading from older driver series does not
      fail (LP: #1847979).

nvidia-graphics-drivers-435 (435.21-0ubuntu0.18.04.1) bionic; urgency=medium

  * Initial release (LP: #1844126).

 -- Alberto Milone <email address hidden> Wed, 23 Oct 2019 15:08:53 +0200

The verification of the Stable Release Update for nvidia-graphics-drivers-435 has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

This bug was fixed in the package nvidia-graphics-drivers-430 - 430.50-0ubuntu0.18.04.2

---------------
nvidia-graphics-drivers-430 (430.50-0ubuntu0.18.04.2) bionic; urgency=medium

  * debian/templates/control.in:
    - Add Conflicts and Replaces to xserver-xorg-video-nvidia-#FLAVOUR#.
      This makes sure that upgrading from older driver series does not
      fail (LP: #1847979).

nvidia-graphics-drivers-430 (430.50-0ubuntu0.18.04.1) bionic; urgency=medium

  * New upstream release (LP: #1844126):
    - Fixed display color range handling on pre-Turing GPUs, such
      that when limited color range is selected through the display
      controls page in nvidia-settings, output pixel values will be
      correctly clamped to Consumer Technology Association (CTA)
      range.

 -- Alberto Milone <email address hidden> Wed, 23 Oct 2019 14:42:35 +0200