This can go into ~/.tmux.conf:
To apply changes from inside tmux/byobu:
tmux source-file ~/.tmux.conf
# 1. Remove if present:
# setw -g utf8 off (deprecated in newer tmux versions)
# 2. Disable Unicode characters for dumb terminals:
set -g pane-border-format ' ' # Removes special characters from pane borders\
set -g pane-border-indicators off # Disables pane indicators
# 3. Clean up the crowded status bar
set -g status-left '#S - ' # Clears left status (removes also logo/distro info. Shows only session name)
set -g status-right '' # Remove all right status indicators