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SubjectRe: input/i8042: Malfunctioning brightness keys on HP Elite Dragonfly G2
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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?

Best,
Alex

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