Osaakohan joku auttaa usb-äänikortin IRQ -hommissa?
habbe@saku-studio:~$ cat /proc/interrupts | grep uhci
16: 0 0 IO-APIC 16-fasteoi uhci_hcd:usb5
18: 1 0 IO-APIC 18-fasteoi uhci_hcd:usb4, firewire_ohci
19: 5948 6020 IO-APIC 19-fasteoi ata_piix, uhci_hcd:usb3
23: 2856 3077 IO-APIC 23-fasteoi ehci_hcd:usb1, uhci_hcd:usb2
Eli ilmeisesti uhci_hcd:usb5 olisi hyvä paikka äänikortille, koska sillä on oma IRQ (16).
Komennon 'lspci -v' mukaan
00:1d.3 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #4 (rev 01) (prog-if 00 [UHCI])
Subsystem: Holco Enterprise Co, Ltd/Shuttle Computer Device 3113
Flags: bus master, medium devsel, latency 0, IRQ 16
I/O ports at fc00 [size=32]
Kernel driver in use: uhci_hcd
Eli ilmeisesti 00:1d.3 on tuon usb-portin (tai kontrollerin) tunnus.
Komennon 'sudo lsusb -v' mukaan
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0001 1.1 root hub
bcdDevice 3.19
iManufacturer 3 Linux 3.19.0-15-lowlatency uhci_hcd
iProduct 2 UHCI Host Controller
iSerial 1 0000:00:1d.3
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0002 1x 2 bytes
bInterval 255
Hub Descriptor:
bLength 9
bDescriptorType 41
nNbrPorts 2
wHubCharacteristic 0x000a
No power switching (usb 1.0)
Per-port overcurrent protection
bPwrOn2PwrGood 1 * 2 milli seconds
bHubContrCurrent 0 milli Ampere
DeviceRemovable 0x00
PortPwrCtrlMask 0xff
Hub Port Status:
Port 1: 0000.0100 power
Port 2: 0000.0100 power
Device Status: 0x0001
Self Powered
eli ilmeisesti Bus 005 olisi hakemani portti.
Bus 001 Device 003: ID 0424:3fd8 Standard Microsystems Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 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 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 046d:c52e Logitech, Inc.
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Tässä näkyy äänikortti (Bus 001 Device 003) ja langaton näppis/hiiri (Bus 002 Device 002). Kuitenkin, vaikka kytkisin äänikortin mihin usb-liittimeen, se menee aina em. komennon mukaan Bus 001:seen. Mitähän tässä voisi tehdä?