Messages in this thread | | | Date | Thu, 25 Feb 2010 14:36:02 -0500 (EST) | From | Alan Stern <> | Subject | Re: pm_op(): usb_dev_suspend+0x0/0x10 returns -2 on USB device 8087:0020 |
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On Thu, 25 Feb 2010, Sarah Sharp wrote:
> > > now, I unplug the USB DVD drive: > > > > > > Feb 25 17:35:38 tonkachi kernel: [ 276.374282] xhci_hcd 0000:02:00.0: > > > WARN: transfer error on endpoint > > > Feb 25 17:35:39 tonkachi kernel: [ 276.728151] xhci_hcd 0000:02:00.0: > > > WARN: transfer error on endpoint > > > Feb 25 17:35:39 tonkachi kernel: [ 276.728819] xhci_hcd 0000:02:00.0: > > > WARN: transfer error on endpoint
Shouldn't there be some messages here about "USB disconnect"? This suggests there's something wrong with the root hub.
> > > I plug it back in, with a DVD in the drive: > > > > > > Feb 25 17:41:21 tonkachi kernel: [ 618.701586] Registered led device: > > > iwl-phy0::radio > > > Feb 25 17:41:21 tonkachi kernel: [ 618.701619] Registered led device: > > > iwl-phy0::assoc > > > Feb 25 17:41:21 tonkachi kernel: [ 618.701649] Registered led device: > > > iwl-phy0::RX > > > Feb 25 17:41:21 tonkachi kernel: [ 618.701674] Registered led device: > > > iwl-phy0::TX > > > Feb 25 17:41:21 tonkachi kernel: [ 618.719536] usb 2-3: new high speed > > > USB device using xhci_hcd and address 0 > > > Feb 25 17:41:21 tonkachi kernel: [ 618.742028] usb 2-3: New USB device > > > found, idVendor=058f, idProduct=6254 > > > Feb 25 17:41:21 tonkachi kernel: [ 618.742034] usb 2-3: New USB device > > > strings: Mfr=0, Product=0, SerialNumber=0 > > > Feb 25 17:41:21 tonkachi kernel: [ 618.742155] usb 2-3: configuration > > > #1 chosen from 1 choice > > > Feb 25 17:41:21 tonkachi kernel: [ 618.742168] usb 2-3: ep 0x81 - > > > rounding interval to 2048 microframes
You must have plugged it into a different port this time, yes?
> That looks like a rather long polling interval. Can you post the output > of `lsusb -vvv -d 058f:6254`?
2048 microframes is 256 ms, the normal polling interval for hubs.
Alan Stern
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