X Windows broken on fast ring WSL2 (?)

[rwilliams]

• Your Windows build number:
  10.0.19608.1006

• What you're doing and what's happening:
  Attempting to run an x windows app like gitkraken, nautilus, xfce, jetbrains toolbox, etc.
  I get the following error.

(gitkraken:273): Gtk-WARNING **: 05:50:35.385: cannot open display: 192.168.1.2:0.0

I attempted a fresh Ubuntu LTS install as well and received the same error. I don't believe anything has changed on my end except running the Windows update.

• What's wrong / what should be happening instead:

With either x410/VcXsrv etc I should be able to launch x windows apps. I've been running various windowed apps for several months now on WSL2 without issue.

[rwilliams]

Tested on version 10.0.19603.1000 and it works as expected.

[dseynhae]

When you started VcXsrv, did you verify it actually created a display on :0 (and no other number)?
Also, if you have a secure connection, you need to use the localhost TCP/IP address:

export DISPLAY=localhost:0.0

I am not sure about WSL 2, it is possible that they use a Unix Socket for secure connections, in which case your environment variable can NOT mention the host name (or its IP address):

export DISPLAY=:0.0

[rwilliams]

@beltaurus On WSL2 I've been using host ip or export DISPLAY=$(cat /etc/resolv.conf | grep nameserver | awk '{print $2; exit;}'):0.0. Something changed in the new build as it's been working fine for months.

[therealkenc]

[rwilliams]

I'll update to 19608 again and try.

[therealkenc]

One thing to try after you upgrade, assuming your problem persists, is use the ip address your DHCP gave your Windows machine not the one in /etc/resolv.conf. Also take a look at what ip route | grep default | awk '{print $3}' returns (that's your WSL default gateway). That might or might not be the same address you see in /etc/resolv.conf.

[rwilliams]

Re-installed 19608 and it's working fine with no changes.