H. Peter Anvin wrote: > Greg KH wrote: >> On Fri, Jan 19, 2007 at 04:40:34PM +0100, Udo van den Heuvel wrote: >>> >>> I just tried my shiny new usb extension cable (repeater): >>> >>> Jan 19 16:01:17 epia kernel: usb 5-1: new high speed USB device using >>> ehci_hcd and address 60 >>> Jan 19 16:01:17 epia kernel: usb 5-1: configuration #1 chosen from 1 >>> choice >>> Jan 19 16:01:17 epia kernel: hub 5-1:1.0: USB hub found >>> Jan 19 16:01:17 epia kernel: hub 5-1:1.0: 4 ports detected >>> Jan 19 16:01:18 epia kernel: hub 5-1:1.0: Cannot enable port 1. Maybe >>> the USB cable is bad? >>> Jan 19 16:01:22 epia last message repeated 3 times >>> Jan 19 16:01:23 epia kernel: hub 5-1:1.0: Cannot enable port 2. Maybe >>> the USB cable is bad? >>> Jan 19 16:01:26 epia last message repeated 3 times >>> Jan 19 16:01:27 epia kernel: hub 5-1:1.0: Cannot enable port 3. Maybe >>> the USB cable is bad? >>> Jan 19 16:01:31 epia last message repeated 3 times
[...] > Actually, what it looks like is even simpler. The extension cable > contains a four-port hub chip (which is the most common commodity chip) > and haven't bothered changing the descriptor to tell the computer only > one port is actually active. So only one port can be activated, and the > others are stubbed out in some evil way. In that case, it should be > noisy but harmless. I will do some more testing then. Is there a way to get rid of the messages? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
