Debian stable is safe and comfortable, but Debian testing has better performing Intel graphics drivers. Let’s stay comfortable and get the newer drivers anyway.
The Debian GNU/Linux project recently migrated the Intel graphics drivers version 2.99.917 into their testing release channel. If you’re on the Debian stable release, you’re currently using the more‐than‐a‐year‐old 2.21.15 driver. The older driver does not support Intel’s most recent graphics cards and you’ll either have a non‐functioning graphics driver or serious performance problems. Luckily, you can easily upgrade the graphics driver running on Debian stable (currently “Jessie”) to the testing version (currently “Stretch”) and leave the rest of your system on Debian stable.
You’ll have to adjust your package repository to install some software from the testing channel without updating the whole system. The instructions below will setup the system to know about packages from the testing channel, but ignore all of them unless expressly told otherwise. You’ll also have to tell the repository manager what your preferred release channel is.
- Run apt-get update && apt-get upgrade to ensure your system is up to date
- Paste the following into the file /etc/apt/apt.conf.d/80defaultrelease (create it if it doesn’t already exist):
- Paste the following into the file /etc/apt/preferences.d/pinning.pref:
Package: * Pin: release a=stable Pin-Priority: 900 Package: * Pin: release a=testing Pin-Priority: -500
- Paste the following into the file /etc/apt/sources.list.d/testing.list:
deb http://httpredir.debian.org/debian/ testing main contrib non-free deb-src http://httpredir.debian.org/debian/ testing main contrib non-free
- Check that you’re release is called “stable” inside /etc/apt/sources.list (if not, adjust the pinning name above)
Your system should now know about the testing repository but not actually use it for anything. You can verify this by performing the first step again. No new updates should be found assuming everything was set up correctly. Double check the last step against the name in the second step if you see a massive list of available updates.
Once everything is setup, you can update the repository listing again and instruct the system to install the xserver-xorg-video-intel video driver:
- apt-get update
- apt-get install -t testing xserver-xorg-video-intel
You can test that the correct driver is loaded by running “glxinfo | grep "OpenGL vendor string"”. The test command should return “Intel Open Source Technology Center”.
Whether you had no working drivers before or older but working drivers, you should notice performance improvements in everything from watching videos on YouTube to gaming through Steam.
These instructions can be used for any package. Be aware that for every package not from your main repository, you’ll introduce some risk of breaking functionality or the system. Use it sparingly, or you’ll probably have less problems by migrating entirely away from Debian stable and over to the testing channel.