Tjyylli

Well, you should consider the proper way to set scrolling:
add in your tmux.conf

set -g mouse on        #For tmux version 2.1 and up

or

set -g mode-mouse on   #For tmux versions < 2.1

It worked for me in windows and panes. Now tmux is just perfect.

Practical tmux has more info on tmux.conf files.

From my .tmux.conf:

# Sane scrolling

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

This enables native xterm scrolling.

For the newest tmux 2.1, to scroll with your mouse sanely, this is the right answer:

set -g mouse on

" sane scrolling:

bind -n WheelUpPane if-shell -F -t = "#{mouse_any_flag}" "send-keys -M" "if -Ft= '#{pane_in_mode}' 'send-keys -M' 'copy-mode -e; send-keys -M'"

it's not enough to just reload your .tmux.conf you need to restart your tmux, e.g. tmux kill-server && tmux

taken from https://github.com/tmux/tmux/issues/145

In my case, just opt + UpArrow and opt + DownArrow on OSX.

This is the way I made it work, and the reasons why I think it is better than the default way.

To try it out, put all the code sections in ~/.tmux.conf.

Step 1. Change the prefix key so you won't have to reach one bit. 'B' is seemingly a close key, but it is in the middle of the two index fingers (at 'F' and 'J', respectively). Because that shortcut is essential in tmux, C-j is much better as it involves zero hand movement (apart from hitting the key).

set -g prefix C-j

unbind C-b

bind C-j send-prefix

Step 2. 'S' (to enter copy-mode) is: 1) close (same reason as above), 2) involves the other hand (compare: the 1-2 in boxing, or the ls command to view files in a directory), and 3) could be thought of as mnemonic for "scroll" (although the copy-mode isn't just about scrolling).

bind s copy-mode

Step 3. The last part, the actual scrolling. 'P' and 'N' are familiar for this purpose to the Emacs users. They are close, intuitive ('P' is above 'N' on the keyboard), and mnemonic ("previous" and "next"). If you just did some scrolling in Emacs, and then go to tmux, it makes sense to have those shortcuts.

However, I found that 'I' and 'K' are even better - they are even closer than 'P' and 'N', and intuitive (for the same reason); as for mnemonics - as scrolling is such a common thing to do, mnemonics won't really matter as the shortcuts will soon bypass your brain and enter the muscle memory.

bind -t emacs-copy 'p' scroll-up

bind -t emacs-copy 'n' scroll-down

bind -t emacs-copy 'i' scroll-up

bind -t emacs-copy 'k' scroll-down

I searched around a lot for this and the best solution for me works as mentioned in this detailed guide:
http://tangledhelix.com/blog/2012/07/16/tmux-and-mouse-mode/

Add these bindings in ~/.tmux.conf:

set -g mode-mouse on



unbind +

bind + 

  new-window -d -n tmux-zoom 'clear && echo TMUX ZOOM && read' ;

  swap-pane -s tmux-zoom.0 ;

  select-window -t tmux-zoom



unbind -

bind - 

  last-window ;

  swap-pane -s tmux-zoom.0 ;

  kill-window -t tmux-zoom

With the above approach implemented, you can copy from panes in a window as well by zooming into each pane first using Prefix +.

One important detail that was missing with the mouse mode is to press Shift before selecting an area to copy. This will copy it to traditional terminal buffer instead of the tmux copy buffer. (https://wiki.archlinux.org/index.php/Tmux#Scrolling_issues)

I'd recommend giving a try to the tmux-better-mouse-mode plugin to solve most of your tmux mouse related issues.

It's compatible with Tmux 2.1+ and the new set-option -g mouse on approach.

The only thing that works for me is putting the following in ~/.tmux.conf

# Allow xterm titles in terminal window, terminal scrolling with scrollbar, and setting overrides of C-Up, C-Down, C-Left, C-Right

set -g terminal-overrides "xterm*:XT:smcup@:rmcup@:kUP5=eOA:kDN5=eOB:kLFT5=eOD:kRIT5=eOC"

(you may need to reboot for this to take effect)

Update:

I found that if you change the setting in Putty Connection > Data > Terminal-type to "putty" (used to fix some formatting issues) from "xterm" then this solution stops working.

Update 2:

Use this if you want "putty" as your terminal type: set -g terminal-overrides "putty*:XT:smcup@:rmcup@:kUP5=eOA:kDN5=eOB:kLFT5=eOD:kRIT5=eOC"

This worked for me:

vim ~/.tmux.conf

set -g mode-mouse on      ###Insert this setting with vim, then source the file.

tmux source-file ~/.tmux.conf

The only thing that worked for me was
vim ~/.tmux.conf
set -g mode-mouse on ###Insert this setting with vim, then source the file.
tmux source-file ~/.tmux.conf

• 
  Ctrl + A - to start scrolling


• 
  Ctrl + C - to stop scrolling