Troubleshooting

Name is not activable

Is the daemon running?

systemctl status cardwired.service

If it’s not running, enable the daemon with systemctl enable cardwired.service and reboot your device.

dGPU is detected as the default gpu

On ROG laptop

is the asus MUX enabled?

asusctl armoury list

then find

gpu_mux_mode:
  current: [(0),1]

0 means that the MUX is disabled, the dGPU IS the default GPU in this case

To enable it:

asusctl armoury set gpu_mux_mode 1

A reboot is required for the change to take effect.

Non ROG Laptop

This shouldn’t happen, please create an issue with the output of

ls /sys/class/drm

and

cat /sys/class/drm/*/status

nvidia-powerd failure after switching modes

When switching to integrated mode on NVIDIA hardware, you may see errors or failures related to the nvidia-powerd service. This is a known quirk caused by the GPU entering D3Cold (a deep sleep state) which prevents nvidia-powerd from communicating with it.

Since v0.12.0, cardwired restarts nvidia-powerd automatically after every mode change (only when the service is enabled), so this is usually fixed without any action. If the problem persists, restart it manually:

sudo systemctl restart nvidia-powerd.service

Note

This was fixed in cardwire 0.12.1, cardwired now stop and start nvidia-powerd on mode switch instead of a naive restart