lkml.org 
[lkml]   [2009]   [Oct]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: USB serial regression 2.6.31.1 -> 2.6.31.2 (and 2.6.32-rc3)
    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



    \
     
     \ /
      Last update: 2009-10-10 04:03    [W:3.166 / U:0.504 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site