Bug#794280: udev: Cannot upgrade: group 'input' already exists

[Charles Plessy]

> Am 20.04.2016 um 15:59 schrieb Charles Plessy:
> 
> The only other explanation I could offer is either a bug in adduser
> (unlikely) or someone modified /etc/adduser.conf and a system users
> suddenly fell in a non-system-user uid range.

Bingo :)

I had to make the following change on that machine, to prevent clashes
with GIDs on an old NFS share.

--- a/adduser.conf
+++ b/adduser.conf
@@ -28,10 +28,10 @@ SKEL=/etc/skel
 # Please note that system software, such as the users allocated by the base-passwd
 # package, may assume that UIDs less than 100 are unallocated.
 FIRST_SYSTEM_UID=100
-LAST_SYSTEM_UID=999
+LAST_SYSTEM_UID=499
 
-FIRST_SYSTEM_GID=100
-LAST_SYSTEM_GID=999
+FIRST_SYSTEM_GID=302
+LAST_SYSTEM_GID=499

I thought that it would only restrict the range of newly attributed GIDs,
not invalidate existing "system" GIDs.

Anyway, many thanks for your answers.  I hope that this bug record will be
useful to other people in the same situation.

Have a nice Sunday,

-- 
Charles Plessy
Tsurumi, Kanagawa, Japan