maybe hp-wmi kernel driver is compiled as a module... i have tried:
# modprobe hp-wmi
on hp pavilion dv5120us and buttons are working now.
Add this module to startup list, this may help.
--
Broken hotkeys on HP Pavilion dv6500 laptop
https://bugs.launchpad.net/bugs/278859
You received this bug
When kernel is loading appears:
udev: deprecated sysfs layout; update the kernel or disable
CONFIG_SYSFS_DEPRECATED; some udev features will not work correctly
maybe there's some connection...
--
lpia karmic alternate: USB key doesn't show up
https://bugs.launchpad.net/bugs/376103
You received
This also happens on 20.04 (development branch).
Installing manually 'python3-distutils' did the trick.
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1763923
Title:
Missing dependencies in Ubuntu 18
https://bugzilla.gnome.org/show_bug.cgi?id=658571
** Bug watch added: GNOME Bug Tracker #658571
https://bugzilla.gnome.org/show_bug.cgi?id=658571
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/45213