Not sure if I am missing something...
I installed a new host from the latest ISO, did a full upgrade immediately after installation with the following now active:
- debian version 13.1
- kernel version 6.14.11-2-pve
- virtual environment 9.0.10
- pve-container version 6.0.13
I downloaded the latest debian template 13.1-2 and tried to run it - it starts and appears to be running but there is nothing in the console.
I then tried the latest v12 template - 12.12-1 - it starts and is totally usable.
I manually upgraded this LXC to v13 and after a reboot it is the same story - it starts and appears to be running but there is nothing in the console.
I came across this thread in which the issue seems to have been resolved so for the heck of it I looked at the content of /usr/share/perl5/PVE/LXC/Setup/Debian.pm but line 37 does not match what is indicated in this thread. I also did a search for 'unsupported debian version' but that appears nowhere in that file.
I tried changing the debian_version file in the LXC to 13 instead of 13.1 as that seems to have worked for a number of posters - still the issue remains.
So, not sure why the check is missing from Debian.pm or what is causing any LXC running v13+ to not start and load as it should
Any pointers of what to look at or other newer posts addressing the issue would be highly appreciated!
Werner
I installed a new host from the latest ISO, did a full upgrade immediately after installation with the following now active:
- debian version 13.1
- kernel version 6.14.11-2-pve
- virtual environment 9.0.10
- pve-container version 6.0.13
I downloaded the latest debian template 13.1-2 and tried to run it - it starts and appears to be running but there is nothing in the console.
I then tried the latest v12 template - 12.12-1 - it starts and is totally usable.
I manually upgraded this LXC to v13 and after a reboot it is the same story - it starts and appears to be running but there is nothing in the console.
I came across this thread in which the issue seems to have been resolved so for the heck of it I looked at the content of /usr/share/perl5/PVE/LXC/Setup/Debian.pm but line 37 does not match what is indicated in this thread. I also did a search for 'unsupported debian version' but that appears nowhere in that file.
I tried changing the debian_version file in the LXC to 13 instead of 13.1 as that seems to have worked for a number of posters - still the issue remains.
So, not sure why the check is missing from Debian.pm or what is causing any LXC running v13+ to not start and load as it should

Any pointers of what to look at or other newer posts addressing the issue would be highly appreciated!
Werner