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I sometimes experience a state of tmux, where Prefix-c stops working although Prefix- still works for other commands. Also, in this state, key bindings like bind -T copy-mode-vi y send-keys -X copy-pipe-and-cancel "pbcopy" stop working as well.

In this case, reloading ~/.tmux.conf doesn't resolve the issue, but terminating the current tmux session does.

How can I reset the current tmux session, like reset would terminal the current terminal?

tmux -V
tmux 3.2
uname -a
Darwin C02Y13AVJGH6 20.4.0 Darwin Kernel Version 20.4.0: Thu Apr 22 21:46:47 PDT 2021; root:xnu-7195.101.2~1/RELEASE_X86_64 x86_64
Shuzheng
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  • @KamilMaciorowski - I don’t why and how it happens. It just occasionally happens. I’m fine with a solution to just reset tmux without closing the session. – Shuzheng Jun 03 '21 at 09:01

2 Answers2

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Have you considered detaching and sending the reset command to the tmux session, as outlined here? This means running tmux send -t foo.0 reset ENTER.

I don't know if this would fix your problem. It would be helpful if you were more specific on what you can and can't do.

Vincent Bechmann
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I recently ran into a similar issue. I was able to get it working again by running tmux set-option -g prefix C-b. Not sure if that would work for you as my issue was slightly different, but may be worth a try!

ktr
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