@klerfayt: Thank you for posting the information. I have modified the PPA test fix (from comment #7). Please update again, verify that "apt-cache policy udev" shows the updated version (Installed: 151-8~kamal~volkeys1), reboot, and then check the volume keys behavior once again.
@klerfayt: Thank you for posting the information. I have modified the PPA test fix (from comment #7). Please update again, verify that "apt-cache policy udev" shows the updated version (Installed: 151-8~kamal~ volkeys1) , reboot, and then check the volume keys behavior once again.