Maximilian Luz

First step should be figuring out how that is connected. The Windows device manager should be able to help with that. Likely USB, so lsusb could also help.

No worries.

So it's a USB device with ID `045E:09C2`. The `045E` is the vendor ID of Microsoft, so it's got at the very least a custom non-OEM ID. Based on the...

> Yes, it looks like the fprint project mentioned earlier is the defacto library for finger print reading on Linux: https://wiki.archlinux.org/title/Fprint > > It looks like it provides the interfaces...

The problem is that the SLS and all newer devices use Intel's Touch Host Controller to receive pen/touchscreen data. This is a PCI device and we don't have a driver...

Any interesting messages in the kernel log? Also do you have any other applications running that could change the ACPI platform profile like the Gnome power profile daemon?

Okay, can you run ```sh echo 'module surface_aggregator +p' | sudo tee /sys/kernel/debug/dynamic_debug/control surface profile set low-power surface profile get ``` While doing that, have keep an eye on the...

Also I'm moving this to https://github.com/linux-surface/linux-surface because it doesn't seem specific to the surface control utility.

Okay, so here's a translated version: ``` tx: aa 55 80 08 00 1a 22 43 80 03 01 00 00 3c 01 02 2a f2 TC=0x03, CID=0x02 (get performance...

Hmm interesting. Is the low-power (battery saver) profile something that you can select on Windows? On my SB2 it's only available if AC is disconnected (but doesn't reset/default to balanced...