Strange issue: sudo: effective uid is not 0, is sudo installed setuid root?

[mk01]

there are many services / daemons running with different groups (input / video / rsyslog) where access should be restricted - owner is in general root, but service / daemon write access is managed through group.

you would break these. and again, the headphones startup script was changing just the user.

Code:

find / -xdev -type f -print0 | xargs -0 stat --printf="%U %n\n" | grep -v '^root\ '

output is there (all files with non-root uid ownership) http://pastebin.com/hmTBBwTN

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system was Raspbian, with XBian .deb packages installed