Not many… but this community isn’t for those people. It’s for people who are already predisposed to self-hosting software.

Couldn’t the same be said for just about any self-hosted app? You can watch video files with a local video player, so no need for Jellyfin; you can save passwords in KeePass, so no need for Vaultwarden; etc.

Seems to me like, if you’d like to have access to this app along with your data from any computer without having to overlay a separate data syncing solution and install a local app on each of those computers, that’s justification enough. Or maybe I’m just not understanding your critique here…

These are the dongles that came with the keyboards, so they’re paired out-of-the-box (although I have also used the process for re-pairing them). They are just connected to a USB port on the computer, so not really permanent, but I do leave them connected. Not both at the same time, but each in turn. Hope that answers your question, but I’m not 100% sure I understood it.

Since posting this, I’ve also tried installing powertop and checking the tunables. According to lsof -t, the dongle is connected directly to the root hub (under only xHCI host controller). I noticed in powertop that those controllers were still under power management, so I disabled them. That didn’t seem to help. The keyboard still lost connection.

Thanks for taking a look. Nothing in dmesg. I’m using the keyboard wired at the moment. That top entry happened when I disconnected USB. I flipped to 2.4GHz and tested the OS key which worked. Tested it periodically until it didn’t work but there were no additional log entries. The rest of the log entries happened when I reconnected USB.

[Mon May 26 11:07:31 2025] usb 1-12: USB disconnect, device number 8
[Mon May 26 11:14:00 2025] usb 1-12: new full-speed USB device number 10 using xhci_hcd
[Mon May 26 11:14:00 2025] usb 1-12: New USB device found, idVendor=fffe, idProduct=0082, bcdDevice= 1.07
[Mon May 26 11:14:00 2025] usb 1-12: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[Mon May 26 11:14:00 2025] usb 1-12: Product: M67
[Mon May 26 11:14:00 2025] usb 1-12: Manufacturer:  
[Mon May 26 11:14:00 2025] input:   M67 as /devices/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.0/0003:FFFE:0082.0017/input/input46
[Mon May 26 11:14:00 2025] hid-generic 0003:FFFE:0082.0017: input,hidraw0: USB HID v1.11 Keyboard [  M67] on usb-0000:00:14.0-12/input0
[Mon May 26 11:14:00 2025] hid-generic 0003:FFFE:0082.0018: hiddev96,hidraw1: USB HID v1.11 Device [  M67] on usb-0000:00:14.0-12/input1
[Mon May 26 11:14:00 2025] input:   M67 Mouse as /devices/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.2/0003:FFFE:0082.0019/input/input47
[Mon May 26 11:14:00 2025] input:   M67 System Control as /devices/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.2/0003:FFFE:0082.0019/input/input48
[Mon May 26 11:14:00 2025] input:   M67 Consumer Control as /devices/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.2/0003:FFFE:0082.0019/input/input49
[Mon May 26 11:14:00 2025] input:   M67 Keyboard as /devices/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.2/0003:FFFE:0082.0019/input/input50
[Mon May 26 11:14:00 2025] hid-generic 0003:FFFE:0082.0019: input,hidraw2: USB HID v1.11 Mouse [  M67] on usb-0000:00:14.0-12/input2
[Mon May 26 11:14:02 2025] input: input-remapper   M67 Keyboard forwarded as /devices/virtual/input/input51

Are there other logs that would be good to check?