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

[Michael Biebl]

Am 04.08.2015 um 13:35 schrieb ael:
> On Fri, Jul 31, 2015 at 11:11:54PM +0200, Michael Biebl wrote:
>> Am 31.07.2015 um 22:32 schrieb ael:
>>> Package: udev
>>> Version: 222-2
>>> Severity: normal
>>>
>>> Setting up udev (222-2) ...
>>> addgroup: The group `input' already exists as a system group. Exiting.

Actually, this message is harmless...

>> Not a bug in the udev package. The udev package always created the
>> "input" group as system group. So it's most likely that you created this
>> group yourself as non-system group.

The addgroup message is only diagnostic, it doesn't indicate a failure.
I was mislead by the bug title.

> I have just tried again on the target system.
> 
> 1) I deleted the input group.
> 2) I updated udev with apt-get install udev. That worked.
> 3) I tried to update systemd-pam but apt-get recommended apt-get -f
> install.
> 4) apt-get -f install tried to install udev again (why, when it was up
> to date?). But then udev again reported failure because of the existing
> input group.
> 
> So I now believe that I did not (directly) create "input", but that it
> was created by udev itself in a failed previous attempt to upgrade.
> 
> So a problem with cleaning up after a failed upgarde attempt?
> 

Can you add a "set -x" to /var/lib/dpkg/info/udev.postinst to see at
which point the postinst fails.



-- 
Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?

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