i have an internal pci card (m-audio 2496) that works fine on my gentoo machine, but i'm having problems with usb audio cards and midi devices. with different devices i get messages similar to this (for the korg nanokontrol midi controller):
[19616.783860] usb 4-2: new full-speed USB device number 19 using uhci_hcd [19616.950892] cannot find the slot for index 0 (range 0-5), error: -16 [19616.950894] cannot create card instance 0 [19616.950899] snd-usb-audio: probe of 4-2:1.0 failed with error -5 it works fine on a netbook with xubuntu: [ 671.691137] usb 4-3: new full-speed USB device number 3 using ohci-pci [ 671.859503] usb 4-3: New USB device found, idVendor=0944, idProduct=0117 [ 671.859521] usb 4-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 671.859530] usb 4-3: Product: nanoKONTROL2 [ 671.859538] usb 4-3: Manufacturer: KORG INC. [ 672.224152] usbcore: registered new interface driver snd-usb-audio normally i'm fairly minimalist with my kernels, but now i tried to build everything that could be relevant, and lsmod shows that i have all the modules present on the xubuntu netbook, and then some. the first difference i see is that gentoo uses uhci_hcd, while xubuntu uses ohci-pci, not that i know what that means... i would appreciate any help. here is the result of zcat /proc/config.gz | grep -i usb # CONFIG_USB_SWITCH_FSA9480 is not set # USB Network Adapters # CONFIG_USB_CATC is not set # CONFIG_USB_KAWETH is not set # CONFIG_USB_PEGASUS is not set # CONFIG_USB_RTL8150 is not set # CONFIG_USB_RTL8152 is not set # CONFIG_USB_USBNET is not set # CONFIG_USB_IPHETH is not set # CONFIG_MOUSE_SYNAPTICS_USB is not set # CONFIG_I2C_TINY_USB is not set CONFIG_SND_USB=y CONFIG_SND_USB_AUDIO=m # CONFIG_SND_USB_UA101 is not set # CONFIG_SND_USB_USX2Y is not set # CONFIG_SND_USB_CAIAQ is not set # CONFIG_SND_USB_US122L is not set # CONFIG_SND_USB_6FIRE is not set # CONFIG_SND_USB_HIFACE is not set # USB HID support CONFIG_USB_HID=y CONFIG_USB_HIDDEV=y CONFIG_USB_OHCI_LITTLE_ENDIAN=y CONFIG_USB_SUPPORT=y CONFIG_USB_COMMON=y CONFIG_USB_ARCH_HAS_HCD=y CONFIG_USB=y # CONFIG_USB_DEBUG is not set # CONFIG_USB_ANNOUNCE_NEW_DEVICES is not set # Miscellaneous USB options CONFIG_USB_DEFAULT_PERSIST=y # CONFIG_USB_DYNAMIC_MINORS is not set # CONFIG_USB_OTG is not set # CONFIG_USB_MON is not set # CONFIG_USB_WUSB_CBAF is not set # USB Host Controller Drivers # CONFIG_USB_C67X00_HCD is not set # CONFIG_USB_XHCI_HCD is not set CONFIG_USB_EHCI_HCD=y # CONFIG_USB_EHCI_ROOT_HUB_TT is not set # CONFIG_USB_EHCI_TT_NEWSCHED is not set CONFIG_USB_EHCI_PCI=y # CONFIG_USB_EHCI_HCD_PLATFORM is not set # CONFIG_USB_OXU210HP_HCD is not set # CONFIG_USB_ISP116X_HCD is not set # CONFIG_USB_ISP1760_HCD is not set # CONFIG_USB_ISP1362_HCD is not set # CONFIG_USB_FUSBH200_HCD is not set # CONFIG_USB_FOTG210_HCD is not set CONFIG_USB_OHCI_HCD=y CONFIG_USB_OHCI_HCD_PCI=y # CONFIG_USB_OHCI_HCD_PLATFORM is not set CONFIG_USB_UHCI_HCD=y # CONFIG_USB_SL811_HCD is not set # CONFIG_USB_R8A66597_HCD is not set # CONFIG_USB_HCD_TEST_MODE is not set # USB Device Class drivers # CONFIG_USB_ACM is not set CONFIG_USB_PRINTER=y # CONFIG_USB_WDM is not set # CONFIG_USB_TMC is not set # NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may # also be needed; see USB_STORAGE Help for more info CONFIG_USB_STORAGE=y # CONFIG_USB_STORAGE_DEBUG is not set # CONFIG_USB_STORAGE_REALTEK is not set # CONFIG_USB_STORAGE_DATAFAB is not set # CONFIG_USB_STORAGE_FREECOM is not set # CONFIG_USB_STORAGE_ISD200 is not set # CONFIG_USB_STORAGE_USBAT is not set # CONFIG_USB_STORAGE_SDDR09 is not set # CONFIG_USB_STORAGE_SDDR55 is not set # CONFIG_USB_STORAGE_JUMPSHOT is not set # CONFIG_USB_STORAGE_ALAUDA is not set # CONFIG_USB_STORAGE_ONETOUCH is not set # CONFIG_USB_STORAGE_KARMA is not set # CONFIG_USB_STORAGE_CYPRESS_ATACB is not set # CONFIG_USB_STORAGE_ENE_UB6250 is not set # USB Imaging devices # CONFIG_USB_MDC800 is not set # CONFIG_USB_MICROTEK is not set # CONFIG_USB_MUSB_HDRC is not set # CONFIG_USB_DWC3 is not set # CONFIG_USB_DWC2 is not set # CONFIG_USB_CHIPIDEA is not set # USB port drivers # CONFIG_USB_SERIAL is not set # USB Miscellaneous drivers # CONFIG_USB_EMI62 is not set # CONFIG_USB_EMI26 is not set # CONFIG_USB_ADUTUX is not set # CONFIG_USB_SEVSEG is not set # CONFIG_USB_RIO500 is not set # CONFIG_USB_LEGOTOWER is not set # CONFIG_USB_LCD is not set # CONFIG_USB_LED is not set # CONFIG_USB_CYPRESS_CY7C63 is not set # CONFIG_USB_CYTHERM is not set # CONFIG_USB_IDMOUSE is not set # CONFIG_USB_FTDI_ELAN is not set # CONFIG_USB_APPLEDISPLAY is not set # CONFIG_USB_SISUSBVGA is not set # CONFIG_USB_LD is not set # CONFIG_USB_TRANCEVIBRATOR is not set # CONFIG_USB_IOWARRIOR is not set # CONFIG_USB_TEST is not set # CONFIG_USB_EHSET_TEST_FIXTURE is not set # CONFIG_USB_ISIGHTFW is not set # CONFIG_USB_YUREX is not set # CONFIG_USB_EZUSB_FX2 is not set # CONFIG_USB_HSIC_USB3503 is not set # USB Physical Layer drivers # CONFIG_USB_PHY is not set # CONFIG_USB_OTG_FSM is not set # CONFIG_NOP_USB_XCEIV is not set # CONFIG_SAMSUNG_USB2PHY is not set # CONFIG_SAMSUNG_USB3PHY is not set # CONFIG_USB_ISP1301 is not set # CONFIG_USB_RCAR_PHY is not set # CONFIG_USB_GADGET is not set # CONFIG_USBIP_CORE is not set # CONFIG_LINE6_USB is not set # CONFIG_USB_ENESTORAGE is not set # CONFIG_USB_WPAN_HCD is not set
