microsoft / microsoft/WSL

cmd.exe on tmux on WSL freezed

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C++
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Description

Issue Reproduction

cmd.exe on tmux on WSL gets freezed.

I open a tmux session, where cmd.exe is running.

>wsl
$ tmux
$ cmd.exe
>
Ctrl+B D to detach
$ exit

Next, I reopen tmux.

>wsl
$ tmux a
>

I see the previous cmd.exe terminal.
But, any input to cmd.exe is ignored ( though input to tmux is valid for example Ctrl+B & to kill ) .
If this is a bug of tmux, then please let me know. I will post this issue on tmux repos.

Windows: Windows 10 Home 1903 18362.418
Linux: https://lxrunoffline.apphb.com/download/Ubuntu/bionic
tmux: 2.6-3ubuntu0.2

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the documented WSL, tmux, and cmd.exe sequence on the listed Windows, Ubuntu, and tmux versions. Check whether cmd.exe accepts input before detaching and after reattaching, while confirming tmux controls still work. Done means identifying the responsible layer or documenting a confirmed limitation with enough evidence for the next investigation.

Written by the indexing model from the issue text.

Assessment

Tech stack
linux, ubuntu
Domain
cli, operating-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
48/100

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