I wouldn't have thought much of this and attributed it to a hub dying, but I've had _two_ USB2 hubs stop working on me in the last week. One was at work, and one at home. I booted into Windows and at least the one at home seems to be fine. The same issue appears with another plain USB2 disk that I have.
The symptoms are that the devices behind the hub stop functioning, the hub which has a power light blinks fast, and I get a bunch of "new device" messages in dmesg, like this: usb 4-4: device descriptor read/64, error -71 usb 4-4: new high speed USB device using ehci_hcd and address 59 usb 4-4: new high speed USB device using ehci_hcd and address 60 usb 4-4: new high speed USB device using ehci_hcd and address 68 usb 4-4: new high speed USB device using ehci_hcd and address 69 usb 4-4: new high speed USB device using ehci_hcd and address 75 usb 4-4: device descriptor read/64, error -71 usb 4-4: new high speed USB device using ehci_hcd and address 77 usb 4-4: new high speed USB device using ehci_hcd and address 81 usb 4-4: new high speed USB device using ehci_hcd and address 83 usb 4-4: new high speed USB device using ehci_hcd and address 93 usb 4-4: new high speed USB device using ehci_hcd and address 98 usb 4-4: new high speed USB device using ehci_hcd and address 102 usb 4-4: new high speed USB device using ehci_hcd and address 103 usb 4-4: new high speed USB device using ehci_hcd and address 105 usb 4-4: new high speed USB device using ehci_hcd and address 106 usb 4-4: new high speed USB device using ehci_hcd and address 112 Although I'm running a two-day-old git snapshot, it isn't a recent kernel issue, because I've booted as far back as 2.6.12.5 and see the same behavior. I did recently get a "new" (refurbished) Thinkpad to replace a broken one, so I am willing to blame a crappy Thinkpad. But, the fact that it works in Windows makes me wonder if it is a Linux bug. The hub also seems to work fine if I plug it in behind an old USB 1 hub that I have. Any ideas? -- Dave ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
