Files
nixos/modules/hosts/t480/usb-wakeup.nix
T

19 lines
1.1 KiB
Nix
Raw Normal View History

{...}: {
flake.nixosModules.t480UsbWakeup = {...}: {
services.udev.extraRules = ''
# Wake the T480 from S3 suspend via a keyboard plugged into a built-in USB
# port. The dock connects over the Thunderbolt-3 controller (3c:00.0), which
# powers down in S3 and cannot detect a cold replug — so dock-connected input
# cannot wake the machine after an unplug-triggered suspend. The built-in xHCI
# (00:14.0) stays wake-capable in S3, so a keyboard on a built-in port works.
#
# Arm the built-in xHCI root hubs (idVendor 1d6b = Linux Foundation root hub),
# scoped to the built-in controller so the TB3 root hubs are left untouched.
ACTION=="add", SUBSYSTEM=="usb", KERNELS=="0000:00:14.0", ATTR{idVendor}=="1d6b", ATTR{power/wakeup}="enabled"
# Arm the IQUNIX MQ80 keyboard itself. Match by VID:PID — the USB bus path
# is unstable across re-enumeration, so path-based matching is unreliable.
ACTION=="add", SUBSYSTEM=="usb", ATTR{idVendor}=="320f", ATTR{idProduct}=="5055", ATTR{power/wakeup}="enabled"
'';
};
}