/proc/acpi/video/VID/DOS is not relevant to checking which version of hotkey-setup you have installed. Please post the contents of these two files:
/sys/devices/platform/thinkpad_acpi/hotkey_mask /sys/devices/platform/thinkpad_acpi/hotkey_recommended_mask
Please also step through the instructions in <https://wiki.ubuntu.com/Hotkeys/Troubleshooting>, so that we can see for certain where the event comes from that the kubuntu widget is reacting to.
/proc/acpi/ video/VID/ DOS is not relevant to checking which version of hotkey-setup you have installed. Please post the contents of these two files:
/sys/devices/ platform/ thinkpad_ acpi/hotkey_ mask platform/ thinkpad_ acpi/hotkey_ recommended_ mask
/sys/devices/
Please also step through the instructions in <https:/ /wiki.ubuntu. com/Hotkeys/ Troubleshooting>, so that we can see for certain where the event comes from that the kubuntu widget is reacting to.