switchable

A command-line tool to enable switchable graphics for certain commands.

You won't need to type DRI_PRIME=1 steam again.

Usage

Write the following to the configuration file ~/.config/switchable/config.toml.

"match": [ "steam" ]

And then just run a command that matches.

steam

And it will automatically use your discrete GPU. (Read below for requirements)

Requirements

• bash
• bash-preexec

Installation

• cargo install switchable
• Add eval "$( switchable init )" to your .bashrc

Configuration

We first look at ~/.config/switchable/config.toml, and if that doesn't exist, we try ~/.switchable/config.toml.

The configuration is a TOML file with the following keys:

# Default value for DRI_PRIME
driver = 1
# Path to bash-preexec if it's not in its default location
preexec = "/home/user/.bash-preexec.sh"

# Regexes to match commands against
match = [
    "steam",
    "echo",
]

# Commands to alias
alias = [     
    "glxgears",
]

Caveats

switchable run doesn't work with aliases such as ll.

Doesn't work with pipes or &&-chained commands unless you use preexec, in which case there may be false positives.

See also

• Arch Wiki page about PRIME, used for switchable graphics
• Wikipedia page about GPU switching

License

This software is copyright (c) 2019 by Tilwa Qendov.

This is free software, licensed under the Artistic License 2.0.