HI all,
I managed to combine 2 Sb Live (a 5.1 Digital and a 5.1 Player one)
in a single 4 in 4 out device following the El-Cheapo HOWTO.
The thing used to work flawlessly on my system:
Slackware 10.1
kernel 2.6.12.2 vanilla (but older versions worked equally well)
ALSA 1.0.8
JACK 0.99.0
all compiled from sources
AMD Athlon XP 3000+
AsRock K7S8X
SB Live! Digital 5.1
SB Live! Player 5.1
ForteMedia FM801
RTL8139
Matrox G450 DualHead AGP
every card runs on its own IRQ:
root@slack101-sal:/home/salvuz# cat /proc/interrupts
CPU0
0: 3067468 IO-APIC-edge timer
1: 4252 IO-APIC-edge i8042
8: 0 IO-APIC-edge rtc
9: 0 IO-APIC-level acpi
12: 68805 IO-APIC-edge i8042
14: 130386 IO-APIC-edge ide0
15: 107823 IO-APIC-edge ide1
16: 0 IO-APIC-level FM801
17: 2080 IO-APIC-level eth0
18: 1138 IO-APIC-level EMU10K1
19: 0 IO-APIC-level EMU10K1
20: 0 IO-APIC-level ohci_hcd:usb2
21: 0 IO-APIC-level ohci_hcd:usb3
23: 0 IO-APIC-level ehci_hcd:usb1
NMI: 0
LOC: 3067418
ERR: 0
MIS: 0
With this setup I was used to little or no xruns even at 128 frames per
buffer.
But upon upgrading to ALSA 1.0.9 (and later releases) I get (no matter
if via command line or qjackctl):
root@slack101-sal:/home/salvuz# jackd -R -v -dalsa -d multi4
getting driver descriptor from /usr/lib/jack/jack_dummy.so
getting driver descriptor from /usr/lib/jack/jack_oss.so
getting driver descriptor from /usr/lib/jack/jack_alsa.so
jackd 0.99.0
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
registered builtin port type 32 bit float mono audio
running with uid=0 and euid=0, will not try to use capabilites
loading driver ..
new client: alsa_pcm, id = 1 type 1 @ 0x805bad0 fd = -1
creating alsa driver ...
multi4|multi4|1024|2|48000|0|0|nomon|swmeter|-|32bit
configuring for 48000Hz, period = 1024 frames, buffer = 2 periods
Couldn't open multi4 for 32bit samples trying 24bit instead
Couldn't open multi4 for 24bit samples trying 16bit instead
Couldn't open multi4 for 32bit samples trying 24bit instead
Couldn't open multi4 for 24bit samples trying 16bit instead
new buffer size 1024
registered port alsa_pcm:capture_1, offset = 4096
registered port alsa_pcm:capture_2, offset = 8192
registered port alsa_pcm:capture_3, offset = 12288
registered port alsa_pcm:capture_4, offset = 16384
registered port alsa_pcm:playback_1, offset = 0
registered port alsa_pcm:playback_2, offset = 0
registered port alsa_pcm:playback_3, offset = 0
registered port alsa_pcm:playback_4, offset = 0
++ jack_rechain_graph():
client alsa_pcm: internal client, execution_order=0.
-- jack_rechain_graph()
4576 waiting for signals
[sits there for about seven seconds...]
jackd watchdog: timeout - killing jackd
Killed
root@slack101-sal:/home/salvuz#
zlorfik! :)
If I reinstall _only_ alsa-lib-1.0.8 (having removed alsa-lib-1.0.9)
keeping the reast of ALSA to 1.0.9, everything returned to work, so I
think something changed in alsa lib 1.0.9 that causes trouble to this
setup...
Anyone else tried building an El-Cheapo multi I/O and noticed the same
thing with alsa-lib 1.0.8->1.0.9 ?
ciao
--
salvuz
POST FATA RESVRGO
Linux registered user #291700 | machine #174619
get counted on ---> http://counter.li.org/ <---
