[PlanetCCRMA] Fedora Core 3 and CCRMA

[Raphael]

Hi all, I'm very new to all this so please bear with me...
I've just discovered the wonderful world of ccrma and proceeded straight away to
install apps...
Unfortunately I came to a bit of a stop as I can't get jack to work.
Tried with 2.6.9+realtime, 2.6.10-rdt and 2.6.10-ll
The latter seems to be a bit better but still not working
At the moment I've got the stuff installed from an apt-get install
planetccrma-dore on the CCRMA/FC3 repository
There are 2 problems really..
First: jack refuses to identify any of the above kernels as having realtime
capabilities as shown below
/~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
jackstart: cannot get realtime capabilities, current capabilities are:
           =ep cap_setpcap-ep
    probably running under a kernel with capabilities disabled,
    a suitable kernel would have printed something like "=eip"

back from read, ret = 1 errno == Success
jackstart: could not give capabilities: Operation not permitted
jackd 0.99.36
Copyright 2001-2003 Paul Davis and others.
jackd comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details

JACK compiled with System V SHM support.
loading driver ..
creating alsa driver ... hw:0|hw:0|1024|2|48000|0|0|nomon|swmeter|-|32bit
control device hw:0
configuring for 48000Hz, period = 1024 frames, buffer = 2 periods
Couldn't open hw:0 for 32bit samples trying 24bit instead
Couldn't open hw:0 for 24bit samples trying 16bit instead
nperiods = 2 for capture
Couldn't open hw:0 for 32bit samples trying 24bit instead
Couldn't open hw:0 for 24bit samples trying 16bit instead
nperiods = 2 for playback
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~/
...my assumption is that I have to turn something on but couldn't find the
relevant doc...

Second if choosing alsa I get inundated with xruns, oss seems fine 
(although if I understand correctly that should be provided by alsa via oss
emulation...???)
Increasing the buffer to something in the order of 8-16k stops this at 
first but after a little while the flood begins again.
The machine is a 2.8 GHz P4 with 1Gb RAM so it shouldn't have a problem with
essentially doing nothing....
/~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
**** alsa_pcm: xrun of at least 0.026 msecs
**** alsa_pcm: xrun of at least 0.064 msecs
**** alsa_pcm: xrun of at least 0.029 msecs
**** alsa_pcm: xrun of at least 0.025 msecs
**** alsa_pcm: xrun of at least 0.043 msecs
**** alsa_pcm: xrun of at least 0.040 msecs
**** alsa_pcm: xrun of at least 0.028 msecs
**** alsa_pcm: xrun of at least 0.030 msecs
**** alsa_pcm: xrun of at least 0.025 msecs
**** alsa_pcm: xrun of at least 0.036 msecs
**** alsa_pcm: xrun of at least 0.051 msecs
**** alsa_pcm: xrun of at least 0.029 msecs
**** alsa_pcm: xrun of at least 0.031 msecs
**** alsa_pcm: xrun of at least 0.085 msecs
**** alsa_pcm: xrun of at least 0.063 msecs
**** alsa_pcm: xrun of at least 0.039 msecs
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~/
...not too sure what this entails but doesn't sound too good...

If anyone could help on the subject it would be greatly appreciated... even a
pointer in the right direction....

here's some more info ....if useful...
Linux prometeus.internal.securesoft.co.uk 2.6.10-2.1.ll.rhfc3.ccrma #1 Thu Dec
30 03:08:13 EST 2004 i686 i686 i386 GNU/Linux
[root at prometeus ~]# lsmod
Module                  Size  Used by
nls_utf8                2048  3
cifs                  216208  3
snd_seq                76688  0
realtime                5128  0
commoncap               8064  1 realtime
nfsd                  211616  9
exportfs                9472  1 nfsd
lockd                  68136  2 nfsd
parport_pc             29380  1
lp                     12780  2
parport                42440  2 parport_pc,lp
autofs4                28932  0
i2c_dev                11776  0
i2c_core               23040  1 i2c_dev
sunrpc                186724  19 nfsd,lockd
iptable_nat            26308  0
iptable_mangle          2688  0
ipt_REJECT              7168  1
ipt_state               1792  4
ip_conntrack           45748  2 iptable_nat,ipt_state
iptable_filter          3584  1
ip_tables              18944  5
iptable_nat,iptable_mangle,ipt_REJECT,ipt_state,iptable_filter
microcode               7072  0
nvidia               3473564  12
md5                     4096  1
ipv6                  284864  10
dm_mod                 64148  0
video                  15620  0
button                  6416  0
battery                 9220  0
ac                      4740  0
uhci_hcd               36368  0
snd_via82xx            32032  2
snd_ac97_codec         79712  1 snd_via82xx
snd_pcm_oss            64800  0
snd_mixer_oss          21760  2 snd_pcm_oss
snd_pcm               124040  3 snd_via82xx,snd_ac97_codec,snd_pcm_oss
snd_timer              38276  2 snd_seq,snd_pcm
snd_page_alloc         10884  2 snd_via82xx,snd_pcm
gameport                5120  1 snd_via82xx
snd_mpu401_uart        11264  1 snd_via82xx
snd_rawmidi            32672  1 snd_mpu401_uart
snd_seq_device          9740  2 snd_seq,snd_rawmidi
snd                    74244  12
snd_seq,snd_via82xx,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,
snd_pcm,snd_timer,snd_mpu401_uart,snd_rawmidi,snd_seq_device
soundcore              11360  2 snd
via_rhine              27396  0
mii                     5120  1 via_rhine
ext3                  135560  4
jbd                    92184  1 ext3
sata_via                7172  0
libata                 48132  1 sata_via
sd_mod                 19072  0
scsi_mod              138368  2 libata,sd_mod

Cheers,
Raphael