Hi, I am seeing that with an acquisition board: [27044.406737] usb 4-4.4: usb_probe_device [27044.406739] usb 4-4.4: configuration #1 chosen from 1 choice [27044.406803] usb 4-4.4: Successful Endpoint Configure command [27044.418946] usb 4-4.4: Successful evaluate context command [27044.421725] usb 4-4.4: Successful evaluate context command [27044.425133] usb 4-4.4: adding 4-4.4:1.0 (config #1, interface 0) [27098.096802] usb 4-4.4: Successful evaluate context command [27098.096993] usb 4-4.4: Successful evaluate context command [27098.100436] usb 4-4.4: Successful evaluate context command [27307.822372] xhci_hcd 0000:00:14.0: Signal while waiting for evaluate context command [27307.822381] usb 4-4.4: Could not disable xHCI U2 timeout, bus schedule bandwidth may be impacted. [27307.822493] xhci_hcd 0000:00:14.0: Signal while waiting for evaluate context command [27307.822500] usb 4-4.4: Could not enable U1 link state, xHCI error -62. [27878.845220] xhci_hcd 0000:00:14.0: Timeout while waiting for evaluate context command [27878.845230] usb 4-4.4: Could not disable xHCI U2 timeout, bus schedule bandwidth may be impacted. [27883.840337] xhci_hcd 0000:00:14.0: Timeout while waiting for evaluate context command [27883.840348] usb 4-4.4: Could not enable U1 link state, xHCI error -62. [27888.955329] xhci_hcd 0000:00:14.0: xHCI host not responding to stop endpoint command. [27888.955336] xhci_hcd 0000:00:14.0: Assuming host is dying, halting host. [27888.955396] xhci_hcd 0000:00:14.0: HC died; cleaning up [27888.955419] hub 3-0:1.0: state 0 ports 4 chg 0000 evt 0000 [27888.955426] usb 3-4: USB disconnect, device number 2 [27888.955428] usb 3-4: unregistering device [27888.955430] usb 3-4: unregistering interface 3-4:1.0 [27888.955559] usb 3-4: usb_disable_device nuking all URBs [27888.955701] xhci_hcd 0000:00:14.0: Slot 2 endpoint 2 not removed from BW list! [27888.955715] hub 4-0:1.0: state 0 ports 4 chg 0000 evt 0000 [27888.955719] usb 4-4: USB disconnect, device number 8 [27888.955722] usb 4-4.4: USB disconnect, device number 15 [27888.955723] usb 4-4.4: unregistering device [27888.955726] usb 4-4.4: unregistering interface 4-4.4:1.0 [27888.955763] usb 4-4.4: Failed to set U1 timeout to 0x0,error code -19 [27888.955767] usb 4-4.4: Set SEL for device-initiated U1 failed. [27888.955769] usb 4-4.4: Set SEL for device-initiated U2 failed. [27888.955785] usb 4-4.4: Failed to set U1 timeout to 0x0,error code -19 [27888.955788] usb 4-4.4: Set SEL for device-initiated U1 failed. [27888.955790] usb 4-4.4: Set SEL for device-initiated U2 failed. [27888.955794] usb 4-4.4: usb_disable_device nuking all URBs [27888.955891] usb 4-4: unregistering device [27888.955893] usb 4-4: unregistering interface 4-4:1.0 [27888.955925] usb 4-4: Failed to set U1 timeout to 0x0,error code -19 [27888.955929] usb 4-4: Set SEL for device-initiated U1 failed. [27888.955931] usb 4-4: Set SEL for device-initiated U2 failed. [27888.955996] usb 4-4: Failed to set U1 timeout to 0x0,error code -19 [27888.956000] usb 4-4: Set SEL for device-initiated U1 failed. [27888.956004] usb 4-4: Set SEL for device-initiated U2 failed. [27888.956007] usb 4-4: usb_disable_device nuking all URBs Today this was running linux 3.10-rc6 but I've seen that before. This is very similar to a report I found here: http://ubuntuforums.org/showthread.php?t=2149484 Has anybody seen that? In my case I'm using libusb to talk with a board. Note: this is running on an Intel Sandy Bridge USB3.0 port... So far I have seen many issues with non-Intel USB3.0 controllers and that same board. Thanks, -- cJ -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
