Hello, Thanks for reply. >>> In Message "Re: crack noise with USB on linux 3.x" >>> <4F338DD6.1070204@xxxxxxxxxxxxxx>, >>> Clemens Ladisch <cladisch@xxxxxxxxxxxxxx> said; > > When I use 3.x, get crack noise on my USB audio randomly. > I'm not aware of any relevant changes in the USB or sound subsystems > between 2.6.39 and 3.0. It's possible that this might be some change > in general power management, or that some other driver is interfering. Hmmmm.... I can't guess the point of problem. But in the fact, I get noise with 3.x kernel without any error/warning message. > Does anything change if you're using a hub, or not; or if you use > another USB port? > In /proc/interrupts, are there other driver on the same interrupt line > as the USB port you're using for the audio device? I don't use a hub. USB audio connects to motherboard port directly. I checked my /proc/interrupts and lsusb. In first, audio was shared interrupt with mouse, keyboard and others. Then I changed to port(bus) twice, but nothing changed. Output detail following; sugi@tempest:~% cat /proc/interrupts |grep usb 16: 0 0 0 0 0 0 1581640 0 IO-APIC-fasteoi ahci, uhci_hcd:usb3, uhci_hcd:usb9 18: 36119 28386783 0 0 0 0 0 1075 IO-APIC-fasteoi ehci_hcd:usb1, uhci_hcd:usb5, uhci_hcd:usb8 19: 0 0 44 0 0 0 0 0 IO-APIC-fasteoi uhci_hcd:usb7 21: 0 0 0 0 0 0 0 0 IO-APIC-fasteoi uhci_hcd:usb4 23: 0 0 0 0 0 0 0 3 IO-APIC-fasteoi ehci_hcd:usb2, uhci_hcd:usb6 sugi@tempest:~% lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 009 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB Bus 001 Device 003: ID 0409:005a NEC Corp. HighSpeed Hub Bus 001 Device 009: ID 22b8:42d9 Motorola PCS Bus 001 Device 004: ID 046d:c041 Logitech, Inc. G5 Laser Mouse Bus 001 Device 005: ID 0853:0110 Topre Corporation Bus 001 Device 006: ID 0584:c2da RATOC System, Inc. Bus 001 Device 007: ID 056d:0002 EIZO Corp. HID Monitor Controls tried with; Bus 008 Device 002: ID 0471:1103 Philips (or NXP) Digital Speaker System Bus 009 Device 002: ID 0471:1103 Philips (or NXP) Digital Speaker System Bus 005 Device 002: ID 0471:1103 Philips (or NXP) Digital Speaker System -- Tatsuki Sugiura mailto:sugi@xxxxxxxxx ------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
