Ubuntu 22.04 fails update Unpacking casper (1.470) over (1.468)

Installing casper or lupin-casper on a running system is generally not supported. That being said, we did miss adding a Breaks/Replaces into casper after we integrated the lupin-casper bits into it, so we'll look into that indeed. But I'd recommend removing casper + lupin-casper from your system.

I have no idea what this is or why it's there. this was a fresh install of Jammy from the Ubuntu site. It was working for the last few weeks then broke yesterday when updating.

Cheers
Spart

Have the same problem. Here is my terminal output:

Preparando o desempaquetado de .../casper_1.470_amd64.deb...
Desempaquetando casper (1.470) sobre (1.468)...
dpkg: produciuse un erro ao procesar o ficheiro /var/cache/apt/archives/casper_1
.470_amd64.deb (--unpack):
 tentando escribir «/usr/share/initramfs-tools/scripts/casper-premount/20iso_sca
n», que tamén está no paquete lupin-casper 0.57build1
update-initramfs: deferring update (trigger activated)
Apareceron erros ao procesar:
 /var/cache/apt/archives/casper_1.470_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

If casper was left installed on the target system by the installer, that's an installer bug.

Can you please run 'apport-collect -p ubiquity 1969464' from the affected system so we can see the installer logs?

Thought it might get sorted with time and after GA of 22.04 but it looks like not.

sudo apt dist-upgrade
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
The following packages were automatically installed and are no longer required:
  gir1.2-gnomebluetooth-1.0 gir1.2-mutter-9 libllvm12 libmutter-9-0
  linux-headers-generic-hwe-20.04 linux-image-generic-hwe-20.04 ltrace
  python3.9 python3.9-minimal xul-ext-ubufox
Use 'sudo apt autoremove' to remove them.
The following packages will be upgraded:
  casper gdm3 gir1.2-gdm-1.0 gir1.2-gtk-4.0 google-chrome-stable libgdm1
  libgtk-4-1 libgtk-4-bin libgtk-4-common snapd ubuntu-advantage-tools
11 to upgrade, 0 to newly install, 0 to remove and 0 not to upgrade.
Need to get 114 MB/114 MB of archives.
After this operation, 7,480 kB disk space will be freed.
Do you want to continue? [Y/n] y
Get:1 http://gb.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libgtk-4-common all 4.6.2+ds-1ubuntu3 [661 kB]
Get:2 http://dl.google.com/linux/chrome/deb stable/main amd64 google-chrome-stable amd64 101.0.4951.41-1 [84.4 MB]
Get:3 http://gb.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libgtk-4-1 amd64 4.6.2+ds-1ubuntu3 [2,850 kB]
Get:4 http://gb.archive.ubuntu.com/ubuntu jammy-updates/main amd64 ubuntu-advantage-tools amd64 27.8~22.04.1 [847 kB]
Get:5 http://gb.archive.ubuntu.com/ubuntu jammy-updates/main amd64 gdm3 amd64 42.0-1ubuntu7 [314 kB]
Get:6 http://gb.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libgdm1 amd64 42.0-1ubuntu7 [61.6 kB]
Get:7 http://gb.archive.ubuntu.com/ubuntu jammy-updates/main amd64 gir1.2-gdm-1.0 amd64 42.0-1ubuntu7 [9,878 B]
Get:8 http://gb.archive.ubuntu.com/ubuntu jammy-updates/main amd64 gir1.2-gtk-4.0 amd64 4.6.2+ds-1ubuntu3 [217 kB]
Get:9 http://gb.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libgtk-4-bin amd64 4.6.2+ds-1ubuntu3 [2,854 kB]
Get:10 http://gb.archive.ubuntu.com/ubuntu jammy-updates/main amd64 snapd amd64 2.55.3+22.04ubuntu1 [21.5 MB]
Fetched 114 MB in 31s (3,639 kB/s)
Preconfiguring packages ...
(Reading database ... 252650 files and directories currently installed.)
Preparing to unpack .../00-libgtk-4-common_4.6.2+ds-1ubuntu3_all.deb ...
Unpacking libgtk-4-common (4.6.2+ds-1ubuntu3) over (4.6.2+ds-1ubuntu2) ...
Preparing to unpack .../01-libgtk-4-1_4.6.2+ds-1ubuntu3_amd64.deb ...
Unpacking libgtk-4-1:amd64 (4.6.2+ds-1ubuntu3) over (4.6.2+ds-1ubuntu2) ...
Preparing to unpack .../02-google-chrome-stable_101.0.4951.41-1_amd64.deb ...
Unpacking google-chrome-stable (101.0.4951.41-1) over (100.0.4896.127-1) ...
Preparing to unpack .../03-ubuntu-advantage-tools_27.8~22.04.1_amd64.deb ...
Unpacking ubuntu-advantage-tools (27.8~22.04.1) over (27.7~22.04.1) ...
Preparing to unpack .../04-gdm3_42.0-1ubuntu7_amd64.deb ...
Unpacking gdm3 (42.0-1ubuntu7) over (42.0-1ubuntu6) ...
Preparing to unpack .../05-libgdm1_42.0-1ubuntu7_amd64.deb ...
Unpacking libgdm1 (42.0-1ubuntu7) over (42.0-1ubuntu6) ...
Preparing to unpack .../06-gir1.2-gdm-1.0_42.0-1ubuntu7_amd64.deb ...
Unpacking gir1.2-gdm-1.0:amd64 (42.0-1ubuntu7) over (42.0-1ubuntu6) ...
Pre...

[Expired for ubiquity (Ubuntu) because there has been no activity for 60 days.]

[Expired for casper (Ubuntu) because there has been no activity for 60 days.]

Hi, I am on the process of rebuilding Ubuntu 22.04 with personal configuration and choice of package, using Cubic and I am also affected by this bug.

```
root@cubic:~# apt upgrade
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back:
  fwupd gcc-10-base guvcview libfwupd2 libfwupdplugin5 libgslcblas0 libguvcview-2.0-2 libinput-bin
  libinput10 libwacom-bin libwacom-common ubiquity ubiquity-frontend-gtk ubiquity-ubuntu-artwork
  xserver-xorg-input-libinput
The following packages will be upgraded:
  casper
1 upgraded, 0 newly installed, 0 to remove and 15 not upgraded.
Need to get 0 B/52.0 kB of archives.
After this operation, 10.2 kB of additional disk space will be used.
Do you want to continue? [Y/n] Y
(Reading database ... 139699 files and directories currently installed.)
Preparing to unpack .../casper_1.470.2_amd64.deb ...
Unpacking casper (1.470.2) over (1.445.3) ...
dpkg: error processing archive /var/cache/apt/archives/casper_1.470.2_amd64.deb (--unpack):
 trying to overwrite '/usr/share/initramfs-tools/scripts/casper-premount/20iso_scan', which is also in package lupin-casper 0.57build1
update-initramfs: deferring update (trigger activated)
Errors were encountered while processing:
 /var/cache/apt/archives/casper_1.470.2_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
root@cubic:~#

```

I will follow up on the discussion.
Thanks.