[SOLVED] can't play audio cds (mplayer)

ReEkd · n00b Joined: 23 Aug 2014 Posts: 12

Hallo,
after switching to a new gentoo installation (with kernel 3.17.2) I cannot play audio cds...
Everything works on the old one (2.6.38), the new one lets me list the audio tracks (cd-info even reads CDDB information nicely),
but no playback.

I have libcdio (pulled in by mplayer with a cdio flag) installed, cdplay

The device is a BD-RW drive on /dev/sr0 with a link /dev/cdrom pointing to it

Roman_Gruber · Posted: Wed Jan 28, 2015 7:04 pm Post subject:

hmm.

you may check if your user is in the right groups?

audiodef · Posted: Thu Jan 29, 2015 2:45 pm Post subject:

In addition to what tw04l124 said, is the kernel the only thing you updated? Did you update only the kernel, or did you update the kernel as part of an emerge -uDN world (or similar)? This doesn't sound like a kernel issue to me.
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ReEkd · n00b Joined: 23 Aug 2014 Posts: 12

@tw04l124: vlc plays CDs, groups are correct plus I was trying as root

@audiodef: sorry, I didn't emphasize the "new installation" enough, I meant that everything works on my old (circa 2008) installation,
and now I was trying to play a CD on a totally fresh one;-) I never said it was a kernel issue, though I didn't rule out the possibility of something missing in my new configuration

Thank you both anyways:-)

Upon further investigation it turns out that the cdio flag in the mplayers ebuild doesn't make a difference anymore,
because the mplayer source doesn't support header changes made in libcdio-0.90 and nobody seems to care,
also libcdio-0.92 is the only one in portage now...
So src_configure ends up without libcdio support in all cases.

Once that was clear I managed to compile it with libcdio, and also found a patch from 2013 that would make a nice addition to mplayer in portage:
https://github.com/pld-linux/mplayer/blob/master/mplayer-libcdio.patch

So the mplayer ebuilds in portage should be revised, IMO, to add dev-libs/libcdio-paranoia to cdio flag dependencies (missing headers) and the above patch...
Nevertheless mplayer needs cdparanoia or libcdio-paranoia to play audio CDs now.

As for media-sound/cdplay app it still doesn't work for me, nor does media-sound/cdcd, but I don't care much for these...

It looks like the "current" mplayer doesn't support reading the cddb information either ("Command syntax error"), but thats for some other time...
And some other patch ;__;

Roman_Gruber · Posted: Thu Jan 29, 2015 6:07 pm Post subject:

Well do you mind making a request on bugs.gentoo.org please to improve our gentoo?

ReEkd · n00b Joined: 23 Aug 2014 Posts: 12

Hmmm, I did that, hopefully correctly...
https://bugs.gentoo.org/show_bug.cgi?id=538186

But I see three years old open mplayer tickets there...

Roman_Gruber · Posted: Thu Jan 29, 2015 7:57 pm Post subject:

Thanks.

I do participate to report broken features / ebuilds when I find those. And I try to answer posts here

Ant P. · Watchman Joined: 18 Apr 2009 Posts: 6920

rogerx · Tux's lil' helper Joined: 06 Apr 2004 Posts: 118

I too recently found libcdio (cdda-player) not playing audio CD's.

MPlayer would also not playback audio CD's when compiled against libcdio (cdio).

However, USE="cdparanoia -cdio" mplayer does now playback audio CD's; but stutter, likely due to cache issues.

I think cdda-player (as well as media-sound/grip) might be dependent on the CD/DVD player's audio-out being connected directly to the audio card?
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szatox · Advocate Joined: 27 Aug 2013 Posts: 3135