+Cc: Darren On Tue, Jul 31, 2018 at 3:40 PM <ryuo@xxxxxxxx> wrote: > > Hello. My HP ProBook 455 G5 has an unusual problem where some function > keys are mapped to the same scan code sequence and hence to the same key > code. It is only the brightness up, the brightness down, and the > microphone mute keys that are effected. All others function as expected. > I originally reported the issue to the downstream bug tracker at Ubuntu, > which you can find here: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1784008 > > As I have exhausted all other known possibilities, I think the nature of > my issue is somehow related to the HP laptop platform drivers. I would > appreciate any guidance on how I could further debug the issue or > assistance with a resolution to the issue. Thank you. Sorry for a bit late answer here, though it seems, as I read the launchpad bug report correctly, the issue had been root caused to BIOS and fixed by an update of the latter. -- With Best Regards, Andy Shevchenko