Re: X11 Forwarding from FreeBSD Qemu Guest to Linux Host

On Fri, Jan 23, 2026 at 10:50 AM Jishan Alam <jishanalam9128@gmail.com> wrote:
>
> Hello,
> So I have set up FreeBSD-15.0 in my system using qemu and I'm using
> ssh to connect to the local qemu instance using ssh.
>
> Host System: Arch Linux 6.18.2 Hyprland (Xwayland installed)
> Guest System: FreeBSD 15.0 (Qemu) (xorg-apps, xauth and xterm installed)
>
> So what I would like to try is to run GUI applications without
> installing the whole Desktop Environment in FreeBSD and I'm trying to
> achieve this using the X11 Forwarding option from ssh with
> X11Forwarding options enabled but It's still not connecting. Is it due
> to using hyprland in my host?
> I'm trying the following:
>
> 1. Start Qemu using the following command
>     qemu-system-x86_64 \
>         -m 4096 \
>         -smp 4 \
>         -enable-kvm \
>         -drive file=freebsd15.qcow2,format=qcow2 \
>         -boot d \
>         -net nic \
>         -net user,hostfwd=tcp::2222-:22
>
> 2. Normally Connect using the following command
>     ssh user@localhost -p 2222
>
> 3. Now Im trying to connect using the following command
>     ssh -X user@localhost -p 2222
> and
>     ssh -Y user@localhost -p 2222
>
> 4. after connection I try the following command
>     echo $DISPLAY
> which displays nothing and I supposed its supposed to display
> something like `localhost:10.0` but its not
>
> 5. Tried with verbose output
>     ssh -vv -X user@localhost -p 2222
> the relevent logs
> debug2: channel_input_open_confirmation: channel 0: callback start
> debug2: x11_get_proto: /usr/bin/xauth  list :1 2>/dev/null
> Warning: No xauth data; using fake authentication data for X11 forwarding.
> debug1: Requesting X11 forwarding with authentication spoofing.
> debug2: channel 0: request x11-req confirm 1
> debug2: client_session2_setup: id 0
> debug2: channel 0: request pty-req confirm 1
> debug2: channel 0: request shell confirm 1
> debug2: channel_input_open_confirmation: channel 0: callback done
> debug2: channel 0: open confirm rwindow 0 rmax 32768
> debug1: Remote: No xauth program; cannot forward X11.
> debug2: channel_input_status_confirm: type 100 id 0
> X11 forwarding request failed on channel 0
> debug2: channel_input_status_confirm: type 99 id 0
> debug2: PTY allocation request accepted on channel 0
> debug2: channel 0: rcvd adjust 2097152
> debug2: channel_input_status_confirm: type 99 id 0
> debug2: shell request accepted on channel 0
>
> as you can see its says `X11 forwarding request failed on channel 0`
> So I don't know what to do next or how to debug this
> Any tips would be appreciated
>
> --
> Best Regards,
> Jishan Alam
>

You need to supply the config file for sshd.  You're problem most
likely lies there.

~Paul

-- 
__________________

:(){ :|:& };: