Ok, after reading Jim McCloskey's posts on the UA-1EX here is what I
tried (keep in mind I am still a Linux newbie somewhat):
UA-1EX with Advanced Driver Switch = OFF
System is Mandriva 2007.0 PWP, kernel 2.6.17-6mdv running on a Compaq
nx9010 laptop.
# modprobe snd-usb-audio
Jan 11 20:29:15 nx9010 kernel: usbcore: registered new driver snd-usb-audio
#alsaconf
Jan 11 20:40:29 nx9010 kernel: ACPI: PCI interrupt for device
0000:00:06.0 disab
led
Has ACPI (Power Management) disabled the interrupt for the built-in
sound card:
Let's look at MCC...
Description: M5451 PCI South Bridge Audio
Media class: MULTIMEDIA_AUDIO
Connection
Bus: PCI
Bus PCI #: 0
PCI device #: 6
PCI function #: 0
Vendor ID: 0x10b9
Device ID: 0x5451
Sub vendor ID: 0x103c
Sub device ID: 0x0850
Driver
Module: snd-ali5451
Alternative drivers: trident
Looks like it because no sound from either the built in soundcard or the
UA-1EX.
Unplug UA-1EX and plug back in after 10 seconds:
Jan 11 20:47:22 nx9010 kernel: usb 2-2: new full speed USB device using
uhci_h
cd and address 3
Jan 11 20:47:22 nx9010 kernel: usb 2-2: configuration #1 chosen from 1
choice
Jan 11 20:47:22 nx9010 kernel: usbcore: registered new driver snd-usb-audio
And MCC identifies UA-1EX correctly as a USB Sound Device:
Identification
Vendor: EDIROL
Description: UA-1EX
Media class: Audio|Control Device
Connection
Bus: USB
Bus PCI #: 2
PCI device #: 3
Vendor ID: 0x0582
Device ID: 0x0097
Sub vendor ID: 0x0000
Sub device ID: 0x0000
Misc
Module: snd-usb-audio
And yes! There is now sound output from the UA-1EX! Sounds great into
Koss Porta-Pro headphones.
Reboot and no sound!
Unplug and plug back in after 10 seconds:
Jan 11 21:42:36 nx9010 kernel: usb 2-2: USB disconnect, address 2
Jan 11 21:42:48 nx9010 kernel: usb 2-2: new full speed USB device using
uhci_hcd
and address 3
Jan 11 21:42:48 nx9010 kernel: usb 2-2: configuration #1 chosen from 1
choice
Note no load of snd-usb-audio.
# lsmod | grep snd_usb_audio
snd_usb_audio 74496 0
snd_usb_lib 15072 1 snd_usb_audio
snd_hwdep 7556 1 snd_usb_audio
snd_pcm 70116 4
snd_usb_audio,snd_pcm_oss,snd_ali5451,snd_ac97_codec
snd 46500 14
snd_usb_audio,snd_rawmidi,snd_hwdep,snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_ali5451,snd_ac97_codec,snd_pcm,snd_timer
usbcore 113472 6
snd_usb_audio,snd_usb_lib,ndiswrapper,ehci_hcd,uhci_hcd
so driver seems to be loaded...
but sound still only thru built in sound card.
Try unloading snd-usb-audio module...
# modprobe -r snd-usb-audio
Jan 11 21:49:49 nx9010 kernel: usbcore: deregistering driver snd-usb-audio
Now load again...
# modprobe snd-usb-audio
Jan 11 21:50:48 nx9010 kernel: usbcore: registered new driver snd-usb-audio
Does the UA-1EX output sound now...No!
But MCC still shows it as a USB Sound Device:
Identification
Vendor: EDIROL
Description: UA-1EX
Media class: Audio|Control Device
Connection
Bus: USB
Bus PCI #: 2
PCI device #: 3
Vendor ID: 0x0582
Device ID: 0x0097
Sub vendor ID: 0x0000
Sub device ID: 0x0000
Misc
Module: snd-usb-audio
Stop and restart ALSA:
# /etc/rc.d/init.d/alsa stop
Doing alsactl to store mixer settings... [ OK ]
Shutting down ALSA sound driver (version 1.0.12): [ OK ]
Jan 11 22:14:40 nx9010 kernel: usbcore: deregistering driver snd-usb-audio
Jan 11 22:14:40 nx9010 kernel: ACPI: PCI interrupt for device
0000:00:06.0 disab
led
# /etc/rc.d/init.d/alsa start
Starting ALSA version 1.0.12: ali5451 ali5451. [ OK ]
No sound from either built-in card or UA-1EX as shutting down ALSA for
some reason caused ACPI to disable the interrupt for the built-in sound
card.
So it doesn't look like ALSA remembered to load snd-usb-audio into its
configuration as the UA-1EX does not output sound still.
So issues appear to be:
1 - config ALSA for the 2 sound cards and make sure it remembers this
configuration
(where does Mandriva keep the Alsa config file and how does one edit
it?).
.
2 - make sure Mandriva 2007 always loads ali5451 and snd-usb-audio at
start up and does not "clean them up".
3 - Why does ACPI disable the built-in sound card's interrupt?
Am I on the right track? Maybe someone can help me...
Thanks,
Dan
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