I haven't installed any new packages recently or added any PPAs, just ran apt update.
After running 'apt upgrade'
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies:
libglvnd-dev : Depends: libglvnd0 (= 1.0.0-2ubuntu2.1) but 1.0.0-2ubuntu2.2 is installed
Depends: libglvnd-core-dev (= 1.0.0-2ubuntu2.1) but 1.0.0-2ubuntu2.2 is installed
Depends: libegl1 (= 1.0.0-2ubuntu2.1) but 1.0.0-2ubuntu2.2 is installed
Depends: libgles2 (= 1.0.0-2ubuntu2.1) but 1.0.0-2ubuntu2.2 is installed
Depends: libgl1 (= 1.0.0-2ubuntu2.1) but 1.0.0-2ubuntu2.2 is installed
Depends: libglx0 (= 1.0.0-2ubuntu2.1) but 1.0.0-2ubuntu2.2 is installed
Depends: libopengl0 (= 1.0.0-2ubuntu2.1) but 1.0.0-2ubuntu2.2 is installed
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).
After running 'apt --fix-broken install' or 'apt-get install -f'
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following additional packages will be installed:
libgles1 libglvnd-dev
The following NEW packages will be installed:
libgles1
The following packages will be upgraded:
libglvnd-dev
1 upgraded, 1 newly installed, 0 to remove and 1 not upgraded.
Need to get 0 B/14.6 kB of archives.
After this operation, 66.6 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
(Reading database ... 686678 files and directories currently installed.)
Preparing to unpack .../libgles1_1.0.0-2ubuntu2.2_amd64.deb ...
Unpacking libgles1:amd64 (1.0.0-2ubuntu2.2) ...
dpkg: error processing archive /var/cache/apt/archives/libgles1_1.0.0-2ubuntu2.2_amd64.deb (--unpack):
trying to overwrite '/usr/lib/x86_64-linux-gnu/libGLESv1_CM.so.1', which is also in package nvidia-340 340.106-0ubuntu3
Preparing to unpack .../libglvnd-dev_1.0.0-2ubuntu2.2_amd64.deb ...
Unpacking libglvnd-dev:amd64 (1.0.0-2ubuntu2.2) over (1.0.0-2ubuntu2.1) ...
dpkg: error processing archive /var/cache/apt/archives/libglvnd-dev_1.0.0-2ubuntu2.2_amd64.deb (--unpack):
trying to overwrite '/usr/lib/x86_64-linux-gnu/libGLESv1_CM.so', which is also in package nvidia-340 340.106-0ubuntu3
Errors were encountered while processing:
/var/cache/apt/archives/libgles1_1.0.0-2ubuntu2.2_amd64.deb
/var/cache/apt/archives/libglvnd-dev_1.0.0-2ubuntu2.2_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
I tried switching back to nouoveau temporarily but due to apt being messed up I can't. The control file asks for all the dependencies to be *-2.2 but when I try to upgrade it's asking for *-2.1.
UPDATE I fixed it by running
sudo dpkg -i --force-overwrite /var/cache/apt/archives/libglvnd-dev_1.0.0-2ubuntu2.2_amd64.deb
sudo dpkg -i --force-overwrite /var/cache/apt/archives/libgles1_1.0.0-2ubuntu2.2_amd64.deb
sudo apt -f install
@pibacco solution on question worked for me:
You need to remove packages completely by
You can also see Can't solve unmet dependencies and sudo apt-get -f install fails