I have a brief update about Signet not working on some systems (may be hardware-related or something in Qubes 4.2, Tails), but working fine on other computers (Microsoft Surface, Debian 12, Windows 10, and others).

I now have a test machine set up and can repro the problem with Qubes 4.2. I can't get Qubes 4.1 to install on that machine.

I'm going to install various OSes on that same physical machine to try to find one that works. This should either rule out this being a hardware/BIOS issue, or imply that's exactly where the problem lies.

Assuming it's an OS thing, the next step will be to try to find any patterns in the test results. Does it only happen in certain kernel versions? Only in certain kernel configurations? Only with specific userland services running?

It's been months of calendar time, hours of work, new hardware purchases, and sooo many reinstallations. I'm very much ready to get this figured out so I can either fix it, work around it, or describe the requirements of where a Signet (and possibly any hidraw device) will and won't work. It's a marathon, that's for sure.