[mythtv-users] udev permissions on /dev/rtc

Larry Finger Larry.Finger at lwfinger.net
Sat Apr 7 18:27:19 UTC 2012


On 04/07/2012 12:46 PM, Tom Dexter wrote:

> Apparently, and I'm not sure when, most likely as a result of a udev
> update, my /dev/rtc was getting created readable only to root.  It may
> have been like this for a very long time.  In order to correct it I
> had to add a udev rule like this:
>
> KERNEL=="rtc|rtc0", MODE="0664"
>
> In my case there's only /dev/rtc, but apparently in some cases there
> can be rtc0.  For those using RTC, it may be worth checking if you
> still actually are.

On my system, /dev/rtc (mode 0777) is a pointer to /dev/rtc0 (mode 0600), thus 
the rule needs to be

KERNEL=="rtc0", MODE="0664"

Larry


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