What's the output of
time ubuntu-drivers list
time /usr/lib/kde4/libexec/DriverManager_DBus&; time qdbus --literal org.kubuntu.DriverManager /DriverManager org.kubuntu.DriverManager.devices
please note that you have to let it run for around 5 seconds after you get the error, your terminal should contain something like this as last line:
> /usr/lib/kde4/libexec/DriverManager_DBus 5.65s user 0.12s system 36% cpu 15.816 total
Most peculiar indeed.
What's the output of kde4/libexec/ DriverManager_ DBus&; time qdbus --literal org.kubuntu. DriverManager /DriverManager org.kubuntu. DriverManager. devices
time ubuntu-drivers list
time /usr/lib/
please note that you have to let it run for around 5 seconds after you get the error, your terminal should contain something like this as last line:
> /usr/lib/ kde4/libexec/ DriverManager_ DBus 5.65s user 0.12s system 36% cpu 15.816 total