On Fri, October 19, 2018 4:46 pm, Simon Wood wrote: > Thanks for the report, and yes it does seem broken. I tried on > 4.17.0-rc5+ > and it seems that the 'hid-logitech' module does not know the device ID of > the G29 anymore. Oh, how easily we forget things... there's a switch on the top wheel (close to LEDs) which changes the wheel into a compatibility mode. Flipping this get wheel recognized and working on 4.17.0-rc5+ -- root@thevoid:/sys/class/leds# ls 0003:046D:C24F.0009::RPM1 0003:046D:C24F.0009::RPM4 input3::numlock input8::compose input8::scrolllock 0003:046D:C24F.0009::RPM2 0003:046D:C24F.0009::RPM5 input3::scrolllock input8::kana 0003:046D:C24F.0009::RPM3 input3::capslock input8::capslock input8::numlock root@thevoid:/sys/class/leds# cd 0003\:046D\:C24F.0009\:\:RPM4 root@thevoid:/sys/class/leds/0003:046D:C24F.0009::RPM4# ls brightness device max_brightness power subsystem trigger uevent root@thevoid:/sys/class/leds/0003:046D:C24F.0009::RPM4# cat max_brightness > brightness -- I'll rebuild HEAD to confirm it still works. Simon. PS. We should maybe pick up that other USB Id.