4

Tmux fails to start with

error creating /run/user/$(id -u)/tmux-1000 (No such file or directory)

But starts fine under root

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5
  • What is the distro that you are running in WSL2? is it the default Ubuntu, or something else? is TMUX_TMPDIR set in your user environment?
    – steeldriver
    Apr 5, 2021 at 14:11
  • Ubuntu 20.04. TMUX_TMPDIR is not set, and I have to similar problem with GNU Screen. It seems that /run is not writable under unprivileged user
    – andreoss
    Apr 5, 2021 at 20:10
  • As a workaround, you could try setting TMUX_TMPDIR=/tmp, which AFAIK is the "traditional" value (and appears to be what tmux uses on Ubuntu 20.04 under WSL1)
    – steeldriver
    Apr 5, 2021 at 20:19
  • 1
    Is TMPDIR set (not TMUX_TMPDIR)? That would explain why it is happening for both tmux and screen. I'm running WSL2 (and WSL1) Ubuntu 20.04 and both are correctly using /tmp/tmux-1000. Figuring out why temp files are trying to go to /run is pretty much the core issue, it sounds like.
    – NotTheDr01ds
    Apr 6, 2021 at 2:05
  • For me exporting export TMUX_TMPDIR='/tmp' in my .zshrc worked on openSuse Tumbleweed with tmux 3.2
    – Didier A.
    Jul 14, 2021 at 5:24

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