Debian 13 LXC – Black Screen in Console (Proxmox VE 9.0)

[Gruenschnabel]

I’ve just created a new Debian 13 (Trixie) LXC container on Proxmox VE 9.0 using the official template. When I open the Console, I only get a completely black screen with a white cursor. Firewall is active but no rules. I dont use IPv6 in my network. I can type into the console, but nothing is echoed or executed.

arch: amd64
cmode: console
cores: 1
hostname: unifi-controller
memory: 2048
nameserver: 192.168.70.1
net0: name=eth0,bridge=vmbr0,firewall=1,gw=192.168.70.1,hwaddr=BC:24:11:0E:AE:1D,ip=192.168.70.79/24,tag=70,type=veth
ostype: debian
rootfs: SSD-DATA1:vm-100-disk-0,size=32G
searchdomain: 192.168.70.1
swap: 0
unprivileged: 1

The container is running (pct list shows it active). I can access the container shell without issues. Is this a known issue with Debian 13 templates or something specific to Proxmox VE 9.0?

Thanks in advance!

 

[Impact]

Why did you change cmode? Can you try with the default?

 

[Gruenschnabel]

Why did you change cmode? Can you try with the default?

I already debugged a bit haha. TTY is the same issue.

 

[Impact]

Starting it in foreground via lxc-start as shown here might help with debugging this.

 

[DonHL]

I am having literally the exact same issue. Debian 13 LXC, PVE 9.0. Container is running and shows active, but console output is blank, despite showing connected. I've tried various combination of console options on the container, nothing works.

arch: amd64
cores: 8
hostname: debian13-test
memory: 16384
net0: name=eth0,bridge=vmbr0,firewall=1,gw=10.1.10.1,hwaddr=BC:24:11:05:F5:F8,ip=10.1.10.82/24,type=veth
ostype: debian
rootfs: ZFS_fast:subvol-802-disk-0,size=32G
swap: 0
unprivileged: 0

 

[news]

Please check: nesting=1

 

[ghunterx21]

Please check: nesting=1

Cheers, that sorted it for me.