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steamify-cachyos/TROUBLESHOOTING.md
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theupriser d78652c862 docs: Shorter README, with a Steam Machine section
How it works moved to TECHNICAL.md, problems to TROUBLESHOOTING.md.
2026-09-25 08:17:07 +02:00

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Troubleshooting

See TECHNICAL.md for how each part works.

Gaming mode shows a black screen or keeps restarting

Press Ctrl+Alt+F3, log in with your username and password, and run:

sudo /usr/lib/steamos/steam-set-session plasma.desktop && sudo systemctl restart display-manager

That takes you back to the desktop. Gamescope sessions that fail to start are restarted right away (Relogin=true), which is why it can loop.

Something is set up wrong

Run the wizard again and press a in the menu to re-apply everything that's on (also useful after a CachyOS update). To undo a part, untick it.

The LED bar on the Steam Machine stays dark

Restart once more; a freshly installed driver often needs a reboot. The menu shows per kernel whether the LED driver is built, and whether it's loaded. Still dark:

dkms status
ls -l /sys/class/leds/valve-leds*/
sudo dmesg | grep -i valve
cat /var/lib/dkms/leds-valve-dkms/0.1/build/make.log
journalctl --user -b | grep -i led

The Steam Machine still reboots when I shut it down

Check that the pinned kernel is installed and running:

uname -r                                   # should be 7.1.6-1-cachyos
pacman -Q linux-cachyos linux-cachyos-headers
grep '^IgnorePkg' /etc/pacman.conf         # should list both packages

Not running it yet? Restart. Not installed? Run the wizard and make sure Pin the kernel under Steam Machine support is ticked. If you have more kernels installed (e.g. the LTS kernel), pick linux-cachyos in the boot menu.

The kernel pin can't download or verify the kernel

The wizard tries this repo's kernel-7.1.6-1 release, then the CachyOS archive and mirror. A file that fails its checksum or CachyOS signature is deleted, so running the wizard again downloads it once more. Offline? Put the four files from the kernel-7.1.6-1 release in /var/cache/steamify/kernel and run it again.