Hi Alex, Let me investigate this issue. The driver maps some keys, so it is possible the list is incomplete. It is expected hp_wmi driver to be loaded, Correct? Can you provide the BIOS version current in your system? Regards, Jorge Lopez Hewlett-Packard “Once you stop learning, you start dying” Albert Einstein -----Original Message----- From: Hans de Goede <hdegoede@xxxxxxxxxx> Sent: Monday, July 11, 2022 7:10 AM To: Alex Dewar <alex.dewar@xxxxxxxxx>; dmitry.torokhov@xxxxxxxxx; tiwai@xxxxxxx; markgross@xxxxxxxxxx; Lopez, Jorge A (Security) <jorge.lopez2@xxxxxx> Cc: linux-input@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; platform-driver-x86@xxxxxxxxxxxxxxx Subject: Re: input/i8042: Malfunctioning brightness keys on HP Elite Dragonfly G2 Hi Alex, On 7/11/22 09:49, Alex Dewar wrote: > Hi Hans, > > On Sat, 2022-07-09 at 16:56 +0200, Hans de Goede wrote: >> Hi, >> >> On 7/5/22 19:25, Alex Dewar wrote: >>> Friendly ping? 🙂 >>> >>> I'm also CC'ing the x86 platform people into this, as I'm not sure >>> whether this problem is something more within their remit. >> >> Please test the atbkd device with "sudo evemu-record" or "sudo >> evtest" >> and if the brightness keys generate events there, write down the raw >> event codes (MSC events). > > I tried this but unfortunately this doesn't seem to be the whole story. > If I press "decrease brightness" I get: > Event: time 1657525393.922727, -------------- SYN_REPORT ------------ > Event: time 1657525397.043348, type 4 (EV_MSC), code 4 (MSC_SCAN), > value 81 > Event: time 1657525397.043348, type 1 (EV_KEY), code 190 (KEY_F20), > value 1 > Event: time 1657525397.043348, -------------- SYN_REPORT ------------ > Event: time 1657525397.050384, type 4 (EV_MSC), code 4 (MSC_SCAN), > value 81 > Event: time 1657525397.050384, type 1 (EV_KEY), code 190 (KEY_F20), > value 0 > > And if I press "increase brightness" I get: > Event: time 1657525397.050384, -------------- SYN_REPORT ------------ > Event: time 1657525398.607184, type 4 (EV_MSC), code 4 (MSC_SCAN), > value 81 > Event: time 1657525398.607184, type 1 (EV_KEY), code 190 (KEY_F20), > value 1 > Event: time 1657525398.607184, -------------- SYN_REPORT ------------ > Event: time 1657525398.614190, type 4 (EV_MSC), code 4 (MSC_SCAN), > value 81 > Event: time 1657525398.614190, type 1 (EV_KEY), code 190 (KEY_F20), > value 0 > > There's no difference! And I also get the same thing if I press the > *actual* mute mic button 😞. > > Any ideas? >From this it looks like we need to use some other interface to get these events (+ ignore the above events). Do you have a "HP WMI hotkeys" device in your list of input devices? And are you getting any events on that ? Likewise do you have a "Video Bus" device and any events on that ? I've also added Jorge from HP to the Cc. Jorge, can you help with this ? Regards, Hans
