Hi,
Somewhere between 28-11-2020 and today my brightness hotkeys are broken
again. They act as mic mute key again. I don't know if this is caused by
the system upgrade or something else. I have used windows for the first
time in a while, so that may have sneakily upgraded something.
I have tried downgrading the packages linux, linux-headers,
linux-firmware, systemd and systemd-libs (form Arch Linux) to some older
version.
I also tried updating the bios from the bios screen and updating the
firmware from windows device manager. This all didn't change anything.
So we're back where we started I guess.
Best regards,
Friso
On 24/11/2020 12:14, Hans de Goede wrote:
Hi,
On 11/12/20 7:25 PM, Friso Smit wrote:
Hi,
I'm not sure if you have read the previous mails in this thread, but the
problem is solved, at least for me, with a bios update.
At that is good to know.
I don't know how
it works exactly, but all keys produce different scan codes now. Are there
still some models where this is a problem?
Yes this is till a problem on at least the hp-pavilion-cx-0598na, see
the mail thread starting here:
https://lore.kernel.org/platform-driver-x86/CAGTBY+sgwYrDPtQgJV=TcXJ73n8TGf9Nw=arCfWMUrVFzAsEVQ@xxxxxxxxxxxxxx/
I've just asked the reported of that problem to check if there is a BIOS
update for his system.
Regards,
Hans
On 11/9/20 2:44 PM, Hans de Goede wrote:
Hi,
On 11/5/20 5:47 PM, Andy Shevchenko wrote:
+Cc: subsystem maintainers
On Sun, May 17, 2020 at 2:24 PM <thestroyer@xxxxxxx> wrote:
Hi,
On my HP Zbook studio G5 a few keys on my keyboard give the same
scancodes. Most notably, the brightness and mute function keys all give
the scan code sequence 0xe0 0x20 0xe0 0xa0 as reported by showkey
--scancodes. It only produces a scancode when pressed, not when
released. I found another very similar issue in this mailing list found
in https://www.spinics.net/lists/platform-driver-x86/msg16791.html. The
issue in that mail was solved by a bios update. I'm running the latest
bios, but I still have the issue.
I tried the kernels: Manjaro 5.7rc4-1, Manjaro 5.6.11-1 and Manjaro
5.4.39-1
I also tried a few other distributions, but they all have the same
issue.
I'm happy to provide more information about this issue if needed.
So this already came in another thread for another HP laptop model,
this seems to be a common issue on some (newer?) HP laptop models.
It seems that we need to make some special WMI calls for this, either
to figure out which key is actually pressed when receiving the
PS/2 scancode which is shared between multiple keys. Or to get the
device to send different scancodes.
This will require someone with some knowledge of ACPI/WMI as well
as of writing kernel code to get physical access to an affected HP
laptop to figure out what is going on and write some code to deal with
this special setup.
Regards,
Hans
