Playing CDs -- KDE problem, or Amarok problem?

[Valorie Zimmerman]

Hearing of another complaint about playing CDs in Amarok, I tried one,
without success. http://amarok.pastebin.ca/1872532 for the very
strange output.

Since the IRC channel has been quiet, due to many of the developers
being on the road to Randa, I also mentioned this issue in
#kubuntu-devel, and here is some of the discussion following:

[14:17] <rgreening> [23:54:24] Riddell: CD Audio in general appears
broken. Kaffiene, Dragon and Amarok all fail to play Audio CD's. Well,
Kaffiene plays the first song and I cannot skip to any other songs.
[14:17] <rgreening> [00:24:44] Riddell: kscd doesn't work either
[14:17] <rgreening> [00:25:09] only vlc works, which doesn't use the
KDE backends (iirc)
[14:17] <rgreening> [00:41:27] Riddell: looks to be a bug with KDE
looking for /dev/cdrom regardless of how Audio CD is configured in
system settings. On my system my cdrom shows up as /dev/cdrom4 ->
/dev/sr0. Seems it only works if I symlink /dev/cdrom -> /dev/sr0.
This is bad. Guess 1) udev rules needs a fix and 2) KDE need some
fixing to be not so restrictive?

By the way, I'm using Amarok with the phonon-vlc backend. VLC itself
does work; that same CD plays in VLC.

[14:17] <Riddell> [05:24:12] I expect /dev/cdrom stopped being useful
ages ago but solid is behind on these things
[14:17] <valorie> [05:25:17] so can I report to the Amarok users
complaining about this that it's a KDE bug which will be fixed?
[14:17] <Riddell> [05:39:36] valorie: I'm just guessing, it depends
where Amarok gets "/dev/cdrom" from, but there's probably some new
udevy interface that gives it the right answer which isn't being used
[14:17] <valorie> [05:44:26] but if: [20:58] <rgreening> Riddell: CD
Audio in general appears broken. Kaffiene, Dragon and Amarok all fail
to play Audio CD's. Well, Kaffiene plays the first song and I cannot
skip to any other songs.
[14:17] <Riddell> [05:44:53] so whatever is going wrong, it's
happening in other apps too :)
[14:17] <valorie> [05:45:01] right
[14:17] <valorie> [05:45:19] but if amarok fixes that, what happens
with the others?
[14:17] <valorie> [05:45:30] I know that few people play CDs on their computers
[14:17] <valorie> [05:45:37] but some do
[14:17] <Riddell> [05:45:59] we'd need to find out what the correct
low level method of finding out where your audio cd drive is these
days, what's the correct layer for that to be exposed in KDE (solid?)
and then whether the applications use that or not
[14:17] <Riddell> [05:46:37] and it may well involve porting solid
away from hal which is no small task

When I mentioned that I would be sending all this to the list:

[14:17] <Riddell> [05:52:21] feel free but remember it's just the
ramblings of an ill-informed distro packager :)

Later: 14:17] <rgreening> [08:48:19] so, KDE seems to require/depend
on the Audio CD being the first configued device /dev/cdrom. That's
bad

...
[14:17] <rgreening> [09:03:19] agateau, JontheEchidna: running amarok
from cmdline and with "Specify CD Device" unchecked, amarok still does
this...
[14:17] <rgreening> [09:03:19] Checking /dev/cdrom for cdrom...
[14:17] <rgreening> [09:03:19]         Could not stat /dev/cdrom: No
such file or directory
[14:17] <rgreening> [09:03:23] grr
[14:17] <rgreening> [09:04:48] agateau, JontheEchidna: and checking
the box again but setting it to the correct /dev/cdrom1, amarok still
spits out looking for /dev/cdrom

[14:17] <agateau> [09:51:20] rgreening: amarok from master does not play cd here
[14:17] <agateau> [09:51:29] rgreening: neither from cdrom nor from cdrom1
[14:17] <rgreening> [09:52:50] ok, so not a distro problem necessarily...
[14:17] <rgreening> [09:53:02] unless it's a udev/hal issue

Perhaps someone here can shed light. It's annoying that CD playing is
lacking again.

Valorie
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