Arch Linux

Akamiblade129_7

Member

Registered: 2024-12-06

Posts: 45

[SOLVED] Tmux breaks colors in KMSCON

I've installed KMSCON and set it on VT2 recently, and it works pretty well.
But all colors disappear when I use tmux. The console just goes B/W.

# ~/.config/tmux.conf
unbind C-b
set -g prefix C-a
bind C-a send-prefix

set -g status-bg blue
set -g status-fg black

set -g default-terminal "screen-256color"
set -ag terminal-overrides ",xterm-256color:Tc"

# /etc/kmscon/kmscon.conf
font-name=Terminus
font-size=24

xkb-layout=us,ru
xkb-options=grp:caps_toggle

Info that might be useful:

• Kernel:     6.15.9.arch1-1

• Terminal:  kmscon 9.1.0-1 (AUR)

• Shell:       zsh 5.9-5

• Tmux:      tmux 3.5_a-1

Last edited by Akamiblade129_7 (2025-08-09 05:40:21)

topcat01

Member

Registered: 2019-09-17

Posts: 258

Re: [SOLVED] Tmux breaks colors in KMSCON

What is the TERM set to before running tmux? Also, what happens if you run tmux with an empty config?

tmux -f /dev/null

seth

Member

From: Don't DM me only for attention

Registered: 2012-09-03

Posts: 71,601

Re: [SOLVED] Tmux breaks colors in KMSCON

https://man.archlinux.org/man/extra/tmux/tmux.1.en#2

As for your config:

set -g default-terminal "screen-256color"
set -ag terminal-overrides ",xterm-256color:Tc"

1. screen is gnu-screen (tmux alternative), that's kinda mean
2. $TERM in kmscon is likely not xterm-256color ?

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

Lone_Wolf

Administrator

From: Netherlands, Europe

Registered: 2005-10-04

Posts: 14,565

Re: [SOLVED] Tmux breaks colors in KMSCON

Kmscon is an aur pacakge.

Moderator Note
Moving to AUR Issues, Discussion & PKGBUILD Requests

---

Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.

clean chroot building not flexible enough ?
Try clean chroot manager by graysky

Akamiblade129_7

Member

Registered: 2024-12-06

Posts: 45

Re: [SOLVED] Tmux breaks colors in KMSCON

What is the TERM set to before running tmux? Also, what happens if you run tmux with an empty config?

tmux -f /dev/null

Same thing happens without config. The TERM is vt102

https://man.archlinux.org/man/extra/tmux/tmux.1.en#2

As for your config:

set -g default-terminal "screen-256color"
set -ag terminal-overrides ",xterm-256color:Tc"

1. screen is gnu-screen (tmux alternative), that's kinda mean tongue
2. $TERM in kmscon is likely not xterm-256color ?

Most of people say that these lines of config help them with broken colors, however it does nothing.

Last edited by Akamiblade129_7 (2025-08-09 05:33:49)

Akamiblade129_7

Member

Registered: 2024-12-06

Posts: 45

Re: [SOLVED] Tmux breaks colors in KMSCON

I actually feel dumb now. Changing terminal-overrides to vt102 fixed it:

set -ag terminal-overrides ",vt102:Tc"

topcat01

Member

Registered: 2019-09-17

Posts: 258

Re: [SOLVED] Tmux breaks colors in KMSCON

Yes, that's what I (and also seth, I think) was hinting at. Good to know it works now.