On Sat, 10 Oct 2009, Benjamin Herrenschmidt wrote: > (Adding Rafael) > > On Sat, 2009-10-10 at 11:31 +1100, Benjamin Herrenschmidt wrote: > > On Sat, 2009-10-10 at 11:25 +1100, Benjamin Herrenschmidt wrote: > > > Hi folks ! > > > > > > My USB GSM modem (Huawei 169, pretty common stuff) stopped working in > > > the latest ubuntu karmic update. So far, I tracked it down to a > > > regression that happened in the stable releases between 2.6.31.1 and > > > 2.6.31.2 (still present in .3). I haven't tested 2.6.32-rc* yet and > > > haven't had a chance to bisect (need to make myself a trimmed > > > down .config first). > > > > 2.6.32-rc3 is also busted with a different log output: > > > > Oct 10 11:27:36 pasglop kernel: [ 34.480060] usb 4-1: new full speed USB device using uhci_hcd and address 2 > > Oct 10 11:27:36 pasglop kernel: [ 34.645057] usb 4-1: configuration #1 chosen from 1 choice > > Oct 10 11:27:36 pasglop kernel: [ 34.658115] Initializing USB Mass Storage driver... > > Oct 10 11:27:36 pasglop kernel: [ 34.660006] scsi2 : SCSI emulation for USB Mass Storage devices > > Oct 10 11:27:36 pasglop kernel: [ 34.660290] usbcore: registered new interface driver usb-storage > > Oct 10 11:27:36 pasglop kernel: [ 34.660294] USB Mass Storage support registered. > > Oct 10 11:27:36 pasglop kernel: [ 34.661566] usb-storage: device found at 2 > > Oct 10 11:27:36 pasglop kernel: [ 34.661568] usb-storage: waiting for device to settle before scanning > > Oct 10 11:27:36 pasglop kernel: [ 35.100131] usb 4-1: USB disconnect, address 2 > > Oct 10 11:27:36 pasglop kernel: [ 35.345076] usb 4-1: new full speed USB device using uhci_hcd and address 3 > > Oct 10 11:27:41 pasglop kernel: [ 35.503633] usb 4-1: configuration #1 chosen from 1 choice > > Oct 10 11:27:41 pasglop kernel: [ 35.515533] scsi6 : SCSI emulation for USB Mass Storage devices > > Oct 10 11:27:41 pasglop kernel: [ 35.516567] usb-storage: device found at 3 > > Oct 10 11:27:41 pasglop kernel: [ 35.516569] usb-storage: waiting for device to settle before scanning > > Oct 10 11:27:41 pasglop kernel: [ 40.518055] usb-storage: device scan complete > > Oct 10 11:27:41 pasglop kernel: [ 40.521051] scsi 6:0:0:0: CD-ROM HUAWEI Mass Storage 2.31 PQ: 0 ANSI: 2 > > Oct 10 11:27:41 pasglop kernel: [ 40.524065] scsi 6:0:0:1: Direct-Access HUAWEI SD Storage 2.31 PQ: 0 ANSI: 2 > > Oct 10 11:27:41 pasglop kernel: [ 40.546018] sr1: scsi-1 drive > > Oct 10 11:27:43 pasglop kernel: [ 40.547167] sr 6:0:0:0: Attached scsi CD-ROM sr1 > > Oct 10 11:27:43 pasglop kernel: [ 40.548872] sr 6:0:0:0: Attached scsi generic sg2 type 5 > > Oct 10 11:27:43 pasglop kernel: [ 40.549178] sd 6:0:0:1: Attached scsi generic sg3 type 0 > > Oct 10 11:27:43 pasglop kernel: [ 40.681084] usb 4-1: reset full speed USB device using uhci_hcd and address 3 > > Oct 10 11:27:43 pasglop kernel: [ 40.960039] usb 4-1: reset full speed USB device using uhci_hcd and address 3 > > Oct 10 11:27:43 pasglop kernel: [ 41.233071] usb 4-1: reset full speed USB device using uhci_hcd and address 3 > > Oct 10 11:27:43 pasglop kernel: [ 41.509066] usb 4-1: reset full speed USB device using uhci_hcd and address 3 ... > > At the end, I think I yanked it out. This looks a lot like a hardware problem, such as bad USB cables. Could you collect a usbmon trace for bus 4? It ought to show whether this is the case or whether software is at fault. Alan Stern -- 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
