[mythtv-users] More FC2 MythTV problems...
jcw at wilsonet.com
Mon Sep 6 19:46:39 EDT 2004
On Monday 06 September 2004 15:57, 1canuck2 wrote:
> Thanks for the replies, there is Progress!
> It now plays live TV without crashing, but no picture, just audio. I had
> spazzed on the mythtvsetup step and had selected vl card instead of
> So, I reran mythtvsetup and changed this, reinitialized with a new
> mythfilldatabase and it still wouldn't work.
Did you also restart the backend for good measure? Could help, not sure.
> Then I chgecked perms on /dev/video0. Its ownership was mythtv/root, but
> its perms were 600. So I chmod'ed to 660 and tried again. I now get audio
> but no video.
600 was sufficient. Root can read everything, regardless of permissions.
> MythTV seems to "minimize" to a little icon in the top left
> corner and I hear just the live TV audio. If I Alt+TAB to make MythTV the
> active application the remote works (pause, rewind, etc) but there is no
> video display.
Could be something haywire with your recording profiles, I dunno. Did you just
adjust the card type when you started up mythtvsetup, or did you choose to
clear all capture cards, then re-add it. Clear and re-add might be worth a
try if you haven't already.
> Here's my questions: Why "Opening OSS audio device '/dev/dsp'."? I followed
> Jarod's steps for Alsa audio, I would have thought it would report alsa not
> OSS, or is this normal?
It's normal. You're running OSS emulation through ALSA, because its easy and
it just works. Easier configuration of native ALSA output is something in CVS
right now, I believe.
> More improtantly, and perhaps related to my video problem, if I go
> to /video/buffer (the XFS partition where the nuv files are created) and do
> an ls -l, the "ringbuf4.nuv" file it created has owner and group as root
> not mythtv, which is not what I would expect.
The file is read and written by the backend and streamed to the frontend for
playback. The backend is running as root, so root/root is normal on that
> Have I missed a step when
> getting the mythbackend to run?
> I checked it on in the Services panel, do I
> need to tell it to run as mythtv instead of root?
No. It won't work, because /dev/video0 won't be read/write for the mythtv user
until the user has logged in (see my other email in this thread re:
> Also, I just had it schedule a recording and the file it is creating there
> is also owner/group of root.
Yup, that's normal too.
> I sure hope I am close to solving this, I truly appreciate the help from
> this community and am eager to show off my MythTV box to my geek friends
> (and perhaps win some converts...)
I'd try clearing all capture cards, then add the card back in. Make sure you
go through all the sections of mythtvsetup and re-assign channel listings to
your card's input(s).
Jarod C. Wilson, RHCE
jcw at wilsonet.com
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