Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Setup: tmux 1.8 running on Ubuntu 12.04 connecting from Windows with Putty. tmux has mouse mode on.

Steps to reproduce: Select the putty window as active, but use the mouse off the window (i.e in another window) Typically this happens when I am scrolling in another application on another monitor but forgot to switch the mouse focus.Also, this only happens if the putty window is large or maximized.

Issue: Junk commands get dumped into tmux (e.g 7#, H#, 7a etc.) If I scroll off window with only PuTTY (no tmux) the screen scrolls as expected.

Here's an screenshot of this

Update: I have determined that this happens if my putty window is has >= 224 columns

share|improve this question
up vote 1 down vote accepted

This is now resolved by Nicholas Marriott - tmux's author - with the patch at

share|improve this answer

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .