Comment 37 for bug 1653456

aljosa (aljosa-p) wrote :

~$ show-key -s
No command 'show-key' found, did you mean:
 Command 'showkey' from package 'kbd' (main)
show-key: command not found

~$ acpi_listen
button/volumeup VOLUP 00000080 00000000 K
button/volumedown VOLDN 00000080 00000000 K
button/mute MUTE 00000080 00000000 K
(there is no visible output for any of the non-functional hotkeys)

If I modify /etc/default/grub to:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=! acpi_osi="Windows 2015""
I cannot update GRUB any more:
sudo update-grub
[sudo] my password:
/usr/sbin/grub-mkconfig: 11: /etc/default/grub: 2015: not found

By the way, you can find here very useful results of already performed various experiments regarding our problem: