[mythtv-users] Can't record or watch live TV
Michael Watson
michael at thewatsonfamily.id.au
Tue Jul 31 00:21:00 UTC 2012
On 28/07/2012 1:27 PM, Stephen Myers wrote:
> I have the latest mythtv (mythbackend version: fixes/0.25
> [v0.25.2-8-g3256849]) on mythbuntu 12.04. I'm getting the following
> error in my mythbackend.log
>
> Jul 27 17:22:11 mythbox mythbackend[8561]: W CoreContext
> dvbchannel.cpp:227 (Open) DVBChan(11:/dev/dvb/adapter0/frontend0):
> Opening DVB frontend device failed.#012#011#011#011eno: Device or
> resource busy (16)
> Jul 27 17:22:12 mythbackend[8561]: last message repeated 19 times
> Jul 27 17:22:12 mythbox mythbackend[8561]: E CoreContext
> dvbchannel.cpp:232 (Open) DVBChan(11:/dev/dvb/adapter0/frontend0):
> Failed to open DVB frontend device due to fatal error or too many
> attempts.
> Jul 27 17:22:12 mythbox mythbackend[8561]: E CoreContext
> channelbase.cpp:1229 (CreateChannel) ChannelBase: CreateChannel()
> Error: Failed to open device /dev/dvb/adapter0/frontend0
> Jul 27 17:22:12 mythbox mythbackend[8561]: E CoreContext
> main_helpers.cpp:196 (setupTVs) Problem with capture cardsCard
> 11failed init
> Jul 27 17:22:12 mythbox mythbackend[8561]: W CoreContext
> main_helpers.cpp:211 (setupTVs) MythBackend: No valid capture cards
> are defined in the database.
>
>
> Seems like I have a permissions problem, but I'm not sure were to
> look. Any ideas?
>
Check the permissions on /dev/dvb/adapter0. The user that runs the
mythtv backend should be a member of the same group that owns the
capture card.
*ls -lh /dev/dvb/adapter0/**
crw-rw----+ 1 root video 212, 1 Jul 30 11:15 /dev/dvb/adapter0/demux0
crw-rw----+ 1 root video 212, 2 Jul 30 11:15 /dev/dvb/adapter0/dvr0
crw-rw----+ 1 root video 212, 0 Jul 30 11:15 /dev/dvb/adapter0/frontend0
crw-rw----+ 1 root video 212, 3 Jul 30 11:15 /dev/dvb/adapter0/net0
*cat /etc/group | grep video*
video:x:44:mythtv
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