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Date: Thu, 25 Sep 2014 11:00:15 -0400
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Subject: Re: [gentoo-user] Re: /dev/ttyUSB* group changed from uucp to root?
From: Mike Gilbert <floppym@gentoo.org>
To: gentoo-user@lists.gentoo.org
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On Wed, Sep 24, 2014 at 6:28 PM, Grant Edwards
<grant.b.edwards@gmail.com> wrote:
> On 2014-09-24, Neil Bothwick <neil@digimed.co.uk> wrote:
>> On Wed, 24 Sep 2014 19:42:56 +0000 (UTC), Grant Edwards wrote:
>>
>>> After an update yesterday, I've noticed that the group assigned to
>>> ttyUSB devices has changed from uucp to root.  Non-USB serial ports
>>> still seem to be uucp.
>>
>> What did you update? They are still root:uucp here.
>
> Several things got updated, but the most likely suspect is probably
> sys-fs/udev-215-r1 => sys-fs/udev-216.  But, I don't see any changes
> in the default rules to account for the change in behavior.
>

I'm running systemd-216, and I see this in
/lib/udev/rules.d/50-udev-default.rules:

KERNEL=="tty[A-Z]*[0-9]|pppox[0-9]*|ircomm[0-9]*|noz[0-9]*|rfcomm[0-9]*",
GROUP="uucp"

I suppose it is possible that some later rule overrides it, but I
don't see anything obvious.