Bug#391041: [Solved :)]Re: Bug#391041: [Pkg-alsa-devel] Bug#391041: libasound2: "ALSA lib pcm_direct.c:1565" ... "ipc_perm must be a valid file permission"

[Wolfgang Pfeiffer]

Jordi

Thanks a lot for your response. With your suggestion I could fix the
issue. ... :) 


On Sat, Oct 07 2006, at 11:54 +0200, Jordi Mallach wrote:
> On Wed, Oct 04, 2006 at 03:47:46PM +0200, Wolfgang Pfeiffer wrote:
> > ALSA lib pcm_direct.c:1565:(snd_pcm_direct_parse_open_conf) The field ipc_perm must be a valid file permission
> 
> Wolfang, I know what causes this: have a look at your asoundrc file, and
> look for the permissinos line. You probably have something like 640, for
> example. Try changing it to 0644.

IINM: It wasn't the ~/.asoundrc, that made the problems, but
/etc/asound.conf :)


This is the old one that obviously caused the error:

----------------------------------------

pcm.!default {
	type plug
	slave.pcm asymer
}

pcm.dmixer {
	type dmix
	ipc_key 1977
	ipc_perm 666
#	ipc_key_add_uid true
	slowptr true
	slave {
		pcm "hw:0"
		period_time 0
		period_size 1024
		buffer_size 8192
		rate 44100
	}
}

pcm.dsnooper {
	type dsnoop
	ipc_key 1978
	ipc_perm 666
#	ipc_key_add_uid true
	slave.pcm "hw:0"
}

pcm.asymer {
	type asym
	playback.pcm "dmixer"
	capture.pcm "dsnooper"
}

pcm.jack {
	type jack
	playback_ports {
		0 alsa_pcm:playback_1
		1 alsa_pcm:playback_2
	}
	capture_ports {
		0 alsa_pcm:capture_1
		1 alsa_pcm:capture_2
	}
}

# These are for alsa-oss
pcm.dsp0 pcm.default
ctl.mixer0 "hw:0"


------------------------------------------


Here's the diff between the file above, and the new, working
/etc/asound.conf :

________________________________________________
# diff -u /etc/asound.conf.061007 /etc/asound.conf
--- /etc/asound.conf.061007     2006-10-07 22:59:29.000000000 +0200
+++ /etc/asound.conf    2006-10-07 23:03:00.000000000 +0200
@@ -6,7 +6,7 @@
 pcm.dmixer {
        type dmix
        ipc_key 1977
-       ipc_perm 666
+       ipc_perm 0644
 #      ipc_key_add_uid true
        slowptr true
        slave {
@@ -21,7 +21,7 @@
 pcm.dsnooper {
        type dsnoop
        ipc_key 1978
-       ipc_perm 666
+       ipc_perm 0644
 #      ipc_key_add_uid true
        slave.pcm "hw:0"
 }

________________________________________________ 

The version that seems to work now with my current sound configs:

# apt-cache policy libasound2
libasound2:
  Installed: 1.0.13-1
  Candidate: 1.0.13-1
  Version table:
 *** 1.0.13-1 0
        990 http://mirror.switch.ch unstable/main Packages
        100 /var/lib/dpkg/status


Please note I didn't check for a newer version ("aptitude update")
before writing this email. ... :)

So with libasound2 1.0.13-1 it's no problem anymore to play both critter and
barrage. KDE returns no error message any more when logging in. 


grep ipc_perm `dpkg -L libasound2 | grep doc`


There are still other pending oddities here with alsa, but I'll go the
powerpc list with those, perhaps. Like the alsamixer does not start
here (Some time ago it did ...): 

__________________________
$ alsamixer     

alsamixer: function snd_ctl_open failed for default: No such device
______________________________________

Or: 

_________________________________
$ asoundconf list
Names of available sound cards:
_______________________

Yes: Nothing, with this last command ...

Odd, because I have sound.

But yes, surely: If I had grepped for all config tags the initial
error message was reporting about, I probably would have found
the solution for #391041 myself:

 ALSA lib pcm_direct.c:1565:(snd_pcm_direct_parse_open_conf) The field ipc_perm must be a valid file permission


Thanks for your help, lots ... :)

Best Regards
Wolfgang


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