nvidia-open-dkms.prime not selected on convertibles (chassis type 31); desktop profile blanks LUKS/Plymouth

[12458]

On hybrid Intel + NVIDIA convertibles (DMI chassis type 31), chwd installs the desktop nvidia-open-dkms profile instead of nvidia-open-dkms.prime.

The desktop profile:

1. Adds the NVIDIA modules to the initramfs.
2. Removes the kms hook via /etc/mkinitcpio.conf.d/10-chwd-kms.conf.

On this system, the internal display is driven by the Intel iGPU. During the Plymouth/LUKS password prompt, only the NVIDIA driver is loaded early, resulting in:

Cannot find any crtc or sizes

The i915 driver is only loaded after the LUKS volume is unlocked, leaving the password prompt on a blank screen.

The .prime profiles are currently gated by:

chassis_types = "8 9 10 11"

As a result, convertibles (chassis type 31) never match and receive the desktop profile instead.

Attempting to install the PRIME profile manually also fails:

sudo chwd -i nvidia-open-dkms.prime -f

no matching device for profile ... found!

Expected Behavior

Hybrid convertibles (DMI chassis type 31, and likely other hybrid form factors) should receive the nvidia-open-dkms.prime profile instead of nvidia-open-dkms.

This would:

• Keep the kms hook enabled.
• Install nvidia-prime and switcheroo-control.
• Match the behavior already used for hybrid laptops.

System Information

• chwd: 1.24.1-1
• Kernel: 7.1.6-1-cachyos
• Vendor: HP
• Product: HP Spectre x360 2-in-1 Laptop 16-aa0xxx
• DMI chassis type: 31 (/sys/class/dmi/id/chassis_type)

GPUs

• 8086:7d55 — Intel Meteor Lake-P (Intel Arc Graphics)
• 10de:28a1 — NVIDIA AD107M (GeForce RTX 4050 Max-Q / Mobile)

Installed Profiles (after autoconfigure)

Profile	Priority
nvidia-open-dkms	10
intel-lpmd	5
intel	4
fprint	5

nvidia-open-dkms.prime is not installed.