I think this might be related:
journalctl -p 3 -xb
nov 15 12:53:55 cinnamon systemd-udevd[643]: event6: Failed to call
EVIOCSKEYCODE with scan code 0x7c, and key code 190: Invalid argument
sudo cat /proc/bus/input/devices | grep -C 5 event6
I: Bus=0019 Vendor= Product= Version=
N:
Yes, Ctrl + zooms in and out. If we believe
https://www.microsoft.com/accessories/en-ww/products/keyboards/natural-
ergonomic-keyboard-4000/b2m-00012 (though my model is not B2M-00012 but
1048) , Microsoft intended the zoom slider on the keyboard to map to
zoom in and out, too.
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> As for the zoom in/out, I meant this:
that's typically done by holding "Ctrl" down and using scroll up/down to
zoom.
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Title:
@ddstreet Thank for the explanation. (Myself, I don't know why the
keyboard behaves this way; I can imagine any option, e.g., a glitch of
the keyboard firmware or hardware, an unintended bug introduced by the
developers of the manufacturer, a cost-reducing design of the
manufacturer, or an
> Do you really mean it's broken?
by "broken", what I mean is it was designed with two separate HID-type
usb interfaces with identical identification
(vendor/product/model/revision ids) but with different operation.
> Is any combination of the sliding key with any modifier key(s)
> (such as
@ddstreet Thanks for the feedback. The keyboard has “Microsoft®
Natural® Ergonomic Keyboard 4000 v1.0”, “Model 1048” printed on its
bottom. The keyboard looks pretty standard to me from outside. Do you
really mean it's broken? Is any combination of the sliding key with any
modifier key(s)
Ok here's my understanding of this:
Most keyboards report a single usb device 'interface' for the keyboard
(some have separate interface(s) for builtin mice or other non-keyboard
stuff). However, your keyboard reports two separate 'interfaces' for
your single keyboard. Unfortunately, both of the
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1890186
Title:
Failed to call EVIOCSKEYCODE with scan code 0xc022d,
In the meantime, I updated Ubuntu to groovy 20.10. My dmesg is
[0.00] microcode: microcode updated early to revision 0x28, date =
2019-11-12
[0.00] Linux version 5.8.0-33-generic (buildd@lgw01-amd64-036) (gcc
(Ubuntu 10.2.0-13ubuntu1) 10.2.0, GNU ld (GNU Binutils for Ubuntu)
OK. dmesg should be enough.
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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Title:
Failed to call
This command would disclose potentially sensitive information of a
production machine to the public; I won't do it unless given an
opportunity to anonymize the results upfront.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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This is more likely to be a kernel bug. Let's find out why IOCTL
EVIOCSKEYCODE failed.
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
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