On 11/7/20 3:33 PM, Riccardo Mottola wrote> Hi!
> As somebody else asked, I booted, attached an USB keyboard and that one works.
> Is the keyboard ADB or USB? I see in the dmesg usb related messages.

Whom are you asking here?

> Here two extracts of dmesg
> [    4.291256] input: PMU as /devices/virtual/input/input0
> [    5.577983] input: HID 05ac:1000 as 
> /devices/pci0001:10/0001:10:1a.0/usb3/3-1/3-1:1.0/0003:05AC:1000.0001/input/input1
> [    5.637676] hid-generic 0003:05AC:1000.0001: input,hidraw0: USB HID v1.11 
> Keyboard [HID 05ac:1000] on usb-0001:10:1a.0-1/input0
> [    5.638292] input: HID 05ac:1000 as 
> /devices/pci0001:10/0001:10:1a.0/usb3/3-1/3-1:1.1/0003:05AC:1000.0002/input/input2
> [    5.639179] hid-generic 0003:05AC:1000.0002: input,hidraw1: USB HID v1.11 
> Mouse [HID 05ac:1000] on usb-0001:10:1a.0-1/input1
> [    5.889488] input: Apple Computer Apple Internal Keyboard/Trackpad as 
> /devices/pci0001:10/0001:10:1a.0/usb3/3-2/3-2:1.0/0003:05AC:020F.0003/input/input3
> [    5.949870] apple 0003:05AC:020F.0003: input,hidraw2: USB HID v1.10 
> Keyboard [Apple Computer Apple Internal Keyboard/Trackpad] on 
> usb-0001:10:1a.0-2/input0
> [    5.950381] input: Apple Computer Apple Internal Keyboard/Trackpad as 
> /devices/pci0001:10/0001:10:1a.0/usb3/3-2/3-2:1.2/0003:05AC:020F.0004/input/input4
> 
> later again this:
> 
> [   19.620556] input: HID 05ac:1000 as 
> /devices/pci0001:10/0001:10:1a.0/usb3/3-1/3-1:1.0/0003:05AC:1000.0007/input/input10
> [   19.680953] hid-generic 0003:05AC:1000.0007: input,hidraw0: USB HID v1.11 
> Keyboard [HID 05ac:1000] on usb-0001:10:1a.0-1/input0
> [   19.697640] input: HID 05ac:1000 as 
> /devices/pci0001:10/0001:10:1a.0/usb3/3-1/3-1:1.1/0003:05AC:1000.0008/input/input11
> [   19.697959] hid-generic 0003:05AC:1000.0008: input,hidraw1: USB HID v1.11 
> Mouse [HID 05ac:1000] on usb-0001:10:1a.0-1/input1
> [   19.740264] input: Apple Computer Apple Internal Keyboard/Trackpad as 
> /devices/pci0001:10/0001:10:1a.0/usb3/3-2/3-2:1.0/0003:05AC:020F.0009/input/input12
> [   19.758395] input: HID 05ac:1000 as 
> /devices/pci0001:10/0001:10:1a.0/usb3/3-1/3-1:1.0/0003:05AC:1000.000A/input/input13
> [   19.797019] apple 0003:05AC:020F.0009: input,hidraw0: USB HID v1.10 
> Keyboard [Apple Computer Apple Internal Keyboard/Trackpad] on 
> usb-0001:10:1a.0-2/input0
> [   19.802378] apple 0003:05AC:020F.000B: Fn key not found (Apple Wireless 
> Keyboard clone?), disabling Fn key handling
> [   19.802489] input: Apple Computer Apple Internal Keyboard/Trackpad as 
> /devices/pci0001:10/0001:10:1a.0/usb3/3-2/3-2:1.2/0003:05AC:020F.000B/input/input14

Looks like your keyboard was detected and it's a USB keyboard.

> [   19.981386] platform regulatory.0: firmware: failed to load regulatory.db 
> (-2)
> [   19.981408] firmware_class: See https://wiki.debian.org/Firmware for 
> information about missing firmware
> [   19.981416] platform regulatory.0: Direct firmware load for regulatory.db 
> failed with error -2
> [   19.981424] cfg80211: failed to load regulatory.db
> 
> What is this regulatory.db? what firmware could I miss?

That's just for WiFi, unrelated to your keyboard.

> It looks like the internal keyboard kets detected several times...

Are you sure the hardware works flawlessly? This could also indicate a hardware 
problem.

If not, you will have to bisect this issue to find which commit broke your 
keyboard.

I recommend cross-compiling the kernel from a fast x86_64 machine.

Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaub...@debian.org
`. `'   Freie Universitaet Berlin - glaub...@physik.fu-berlin.de
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