I have a Tascam US-122 USB soundcard on a newish Abit AN-M2
(nForce4) using both ArchLinux 64bit and Kubuntu 32bit distros
with a 2.6.22 kernel. Onboard MCP67 (snd_hda_intel) audio seems
fine but audio in and out the snd_usb_usx2y driver is distorted.
I've tried nrpacks=1 which is the only tweak I could find by
Googling. A 32bit ArchLinux install on an older machine with
the same kernel is (always has been) just fine with this US-122
external soundcard. I thought it may have been a 64bit problem
but the 32bit Kubuntu install is the same so the main
difference is the mainboard and SMP CPU.
I think all systems have ALSA 1.0.14. Would anyone have any
suggestions how to solve, or diagnose this problem further ?
00:07.0 Audio device: nVidia Corporation MCP67 High Definition Audio (rev a1)
00:02.0 USB Controller: nVidia Corporation Unknown device 055e (rev a2)
00:02.1 USB Controller: nVidia Corporation Unknown device 055f (rev a2)
Bus 003 Device 002: ID 1604:8007 Tascam US-122 Audio/Midi Interface
0 [NVidia ]: HDA-Intel - HDA NVidia
HDA NVidia at 0xfe020000 irq 21
1 [USX2Y ]: USB US-X2Y - TASCAM US-X2Y
TASCAM US-X2Y (1604:8007 if 0 at 003/002)
usbcore 132144 6 snd_usb_usx2y,snd_usb_lib,usbhid,ohci_hcd,ehci_hcd
20: 317 261929 IO-APIC-fasteoi ohci_hcd:usb4, eth0
21: 241 269964 IO-APIC-fasteoi ohci_hcd:usb3, HDA Intel
22: 195 131804 IO-APIC-fasteoi ehci_hcd:usb2, nvidia
23: 52 25045 IO-APIC-fasteoi ehci_hcd:usb1, ahci
--markc
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