sc-controller, the Linux user-mode driver for the Steam Controller and other controllers (e.g. DS4/DS5), has been released in version 1.0.3.
The update fixes two bugs affecting the Steam Controller (2015) over Bluetooth: the left stick press was no longer registering correctly, and a buffer overflow bug has been closed. AppImage support for Noble images has also been restored, after it was broken in the 1.x.x branch.
What’s Changed
- Fix left stick press not registering for Steam Controller (2015) over BT
- Fix buffer overflow bug for Steam Controller (2015) over BT
- AppImage support restored for Noble images
⚠️ Manual intervention (may be) required
Please check out the v0.7.0 release notes if you haven’t already migrated any affected custom profiles.
AppImage
If you wish to use the AppImage but you’re not sure which version to go for, stick with the noble-x86_64.AppImage
Note that the Resolute images are broken.

The developer has also set up a Discord server for support and sharing profiles.
Source: GitHub