# Redshift Config

Redshift adjusts the color temperature according to the position of the sun. A different color temperature is set during night and daytime. During twilight and early morning, the color temperature transitions smoothly from night to daytime temperature to allow your eyes to slowly adapt.

Create the file `$HOME/.config/redshift.conf`

```
; Global settings
[redshift]
temp-day=6500K
temp-night=5000K

transition=1

;gamma=0.8:0.7:0.8
gamma=1.000:1.000:1.000

location-provider=geoclue2
;location-provider=manual

;adjustment-method=vidmode
adjustment-method=randr

;brightness=1.0:0.5
;brightness-day=0.9
;brightness-night=0.6

; The location provider and adjustment method settings are in their own sections.
; Below is the Lat/Long for northeast Ohio (Cleveland area)
[manual]
lat=41.4553
lon=-81.9179

; In this example screen 1 is adjusted by vidmode. Note that the numbering starts from 0, so this is actually the second screen.
;[vidmode]
;screen=1
```

Add the following stanza to `/etc/geoclue/geoclue.conf`

```
[redshift]
allowed=true
system=false
users=
```

## Reference

* [Failed to run Redshift: Trying location provider geoclue2... · Issue #445 · jonls/redshift · GitHub](https://github.com/jonls/redshift/issues/445)