To start tmux on every shell login, the following was added to the ~/.bashrc (on the server):

if [ $TERM != "screen-256color" ] && [  $TERM != "screen" ]; then
    tmux attach || tmux new; exit

I also want to change the window title to something like user@server (instead of user@localhost) when ssh into a host. Here's my ~/.tmux.conf:

set -g prefix C-a
unbind C-b
bind C-a send-prefix

set -g set-titles on
set -g set-titles-string "#T"

bind-key o split-window -v
bind-key e split-window -h

bind-key w kill-pane

set -g terminal-overrides 'xterm*:smcup@:rmcup@'

As you can see, set-titles was set to on, but it doesn't work as expected.

More informations:

Outside of tmux:

$ echo $TERM

Inside of tmux:

$ echo $TERM

show -g: https://clbin.com/h7oDh

tmux info: http://sprunge.us/XHCB

And here're the logs when running tmux -vvvvv for a bit:

If I comment out the lines in ~/.bashrc, from my laptop, ssh to the server, the title bar shows correctly (quanta@server), then start tmux from there also works as expected.

But if I want to start tmux immediately after login, the title bar remains to be quanta@Ubuntu after ssh.

UPDATE Fri May 10 07:51:23 ICT 2013

I have deleted the exit command in order not to close the shell session when the last tmux window is closed:

if [ $TERM != "screen-256color" ] && [  $TERM != "screen" ]; then
    tmux attach || tmux new

The strange thing is:

  • ssh to server -> the title bar: quanta@Ubuntu
  • detach from tmux -> the title bar switch to quanta@server
  • attach to tmux again -> the title bar still shows correctly quanta@server

I'm not sure if it's related to the PROMPT_COMMAND environment variable or not:

Outside of tmux:

echo -ne "\033]0;${USER}@${HOSTNAME%%.*}:${PWD/#$HOME/~}"; echo -ne "\007"

Inside of tmux:

echo -ne "\033_${USER}@${HOSTNAME%%.*}:${PWD/#$HOME/~}"; echo -ne "\033\\"
  • In case it isn't obvious in this question. His setup works fine, just not when he attempts to run it from his .bashrc.
    – slm
    May 9, 2013 at 18:39
  • Please provide the output from tmux info.
    – slm
    May 10, 2013 at 7:47

2 Answers 2


Problem solved!

To enable native xterm mouse scrolling in tmux, a lot of wiki, Q & A site, blog post suggest adding a line like:

set -g terminal-overrides 'xterm*:smcup@:rmcup@'

to ~/.tmux.conf. And it is the culprit.

To allow xterm titles in terminal window, you also need to add the XT flag, something like this:

set -g terminal-overrides "xterm*:XT:smcup@:rmcup@"

Source: http://opennomad.com/content/goodbye-screen-hello-tmux

  • 3
    Thank for your post. In my case with rxvt, the setting is set -ga terminal-overrides ",rxvt*:XT"
    – favadi
    May 11, 2013 at 4:39
  • 2
    As @favadi pointed out, the proper fix for this is to use the -a option with set to append the smcup/rmcup overrides. This will fix other weird issues, like not being able to set the cursor shape properly.
    – blueyed
    Nov 5, 2014 at 16:27

Came across this thread from the tmux-users mailing list. The thread was titled: set-titles not working. There are a couple of things from this thread to try. There's a cleaner version of the thread here as well.

XTerm Resources

For starters the eventual fix was to add the following line to your XTerm Resources file, ~/.Xresources:

XTerm*allowSendEvents: true

Debugging tmux tips

There were also some debugging tips in this thread that may help you as well.

verbose tmux

  1. close all tmux sessions
  2. run the command: tmux -vvvvv
  3. run the command: vi foo
  4. save the file
  5. exit tmux

After doing so you should have 3 files, something like these:

  • tmux-out-21594.log
  • tmux-client-21592.log
  • tmux-server-21594.log

tmux info

$ tmux info
tmux 1.4, pid 22182, started Fri May 10 04:00:37 2013
socket path /var/run/tmux/tmux-500/default, debug level 0
system is Linux #1 SMP Wed Nov 23 13:07:52 UTC 2011 x86_64
configuration file is /home/saml/.tmux.conf
protocol version is 6

 0: /dev/pts/12 (8, 11): 0 [132x24 xterm] [flags=0x1/0x38, references=0]

Sessions: [5/10]
 0: 0: 1 windows (created Fri May 10 04:00:37 2013) [132x23] [flags=0x0]
   0: bash [132x23] [flags=0x8, references=1, last layout=-1]
     0: /dev/pts/48 22183 13 1/23, 135 bytes; UTF-8 0/23, 0 bytes

xterm [references=1, flags=0x0]:
 1: acsc: (string) ``aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~
 0: AX: (flag) true
 2: bel: (string) \007
144: smul: (string) \033[4m
145: vpa: (string) \033[%i%p1%dd
146: xenl: (flag) true

  • I already read that thread before asking here. XTerm*allowSendEvents: true didn't work. The log files has been uploaded. See my updated question.
    – quanta
    May 10, 2013 at 8:29
  • 2
    In the future you should include these types of items in your question, so as to not waste everyone's time rehashing things you've already tried.
    – slm
    May 10, 2013 at 8:32

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