Per Jessen changed bug 905034
What Removed Added
Flags needinfo?(per@computer.org)  

Comment # 24 on bug 905034 from
(In reply to Per Jessen from comment #22)
> (In reply to Johannes Meixner from comment #18)
> 
> > Now the scanner itself could be somehow a bit damaged
> > but I think this is unlikely.
> 
> Yes, also given that it works fine with another desktop, that seems
> unlikely. 
> 
> > For now it is only a gut feeling but I think that something
> > goes wrong during USB data transfer in the software that
> > is used for the low-level USB data transfer.
> 
> I have been thinking exactly that.
> 
> > For me it looks as if while the data is being read from the scanner,
> > the data becomes more and more distorted and this seems to indicate
> > that something goes more and more wrong during USB data transfer.
> 
> One little hardware difference - office11, where the scanner works, has a
> local disk as root, office12 and -13 both boot from NFS. It seems like a
> long shot, but the two NFS-root machines probably have more I/O and
> interrupts happening during the data transfer.  I might try another machine
> with local disk and see what happens.
> 
> > Please install kernel-default and boot with it (you may have to
> > manually select it in the Grub boot menue) and then run
> > 
> > # lspci -v | egrep -i 'usb|hci'
> > 
> > # lsmod | egrep 'usb|hci'
> > 
> > and post the output of both commands here.
> 
> Willdo.

office12a:~ # lspci -v | egrep -i 'usb|hci'
00:1d.0 USB controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
USB UHCI #1 (rev 04) (prog-if 00 [UHCI])
        Kernel driver in use: uhci_hcd
        Kernel modules: uhci_hcd
00:1d.1 USB controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
USB UHCI #2 (rev 04) (prog-if 00 [UHCI])
        Kernel driver in use: uhci_hcd
        Kernel modules: uhci_hcd
00:1d.2 USB controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
USB UHCI #3 (rev 04) (prog-if 00 [UHCI])
        Kernel driver in use: uhci_hcd
        Kernel modules: uhci_hcd
00:1d.7 USB controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
USB2 EHCI Controller (rev 04) (prog-if 20 [EHCI])
        Kernel driver in use: ehci-pci
        Kernel modules: ehci_pci

# lsmod | egrep 'usb|hci'

usbhid                 52574  0 
ehci_pci               12914  0 
uhci_hcd               49376  0 
ehci_hcd               79604  1 ehci_pci
usbcore               256127  4 uhci_hcd,ehci_hcd,ehci_pci,usbhid
usb_common             13057  1 usbcore

# dmesg | grep usb
[    3.745883] usbcore: registered new interface driver usbfs
[    3.745909] usbcore: registered new interface driver hub
[    3.760130] usbcore: registered new device driver usb
[    3.768619] usb usb1: New USB device found, idVendor=1d6b, idProduct=0001
[    3.768700] usb usb1: New USB device strings: Mfr=3, Product=2,
SerialNumber=1
[    3.768806] usb usb1: Product: UHCI Host Controller
[    3.768875] usb usb1: Manufacturer: Linux 3.16.6-2-default uhci_hcd
[    3.768946] usb usb1: SerialNumber: 0000:00:1d.0
[    3.791767] usb usb2: New USB device found, idVendor=1d6b, idProduct=0001
[    3.791845] usb usb2: New USB device strings: Mfr=3, Product=2,
SerialNumber=1
[    3.791952] usb usb2: Product: UHCI Host Controller
[    3.792046] usb usb2: Manufacturer: Linux 3.16.6-2-default uhci_hcd
[    3.792120] usb usb2: SerialNumber: 0000:00:1d.1
[    3.805173] usb usb3: New USB device found, idVendor=1d6b, idProduct=0001
[    3.805250] usb usb3: New USB device strings: Mfr=3, Product=2,
SerialNumber=1
[    3.805357] usb usb3: Product: UHCI Host Controller
[    3.805425] usb usb3: Manufacturer: Linux 3.16.6-2-default uhci_hcd
[    3.805496] usb usb3: SerialNumber: 0000:00:1d.2
[    3.839068] usb usb4: New USB device found, idVendor=1d6b, idProduct=0002
[    3.839120] usb usb4: New USB device strings: Mfr=3, Product=2,
SerialNumber=1
[    3.839160] usb usb4: Product: EHCI Host Controller
[    3.839195] usb usb4: Manufacturer: Linux 3.16.6-2-default ehci_hcd
[    3.839232] usb usb4: SerialNumber: 0000:00:1d.7
[    5.092046] usb 1-1: new low-speed USB device number 2 using uhci_hcd
[    5.246101] usb 1-1: New USB device found, idVendor=046a, idProduct=0011
[    5.246163] usb 1-1: New USB device strings: Mfr=0, Product=0,
SerialNumber=0
[    5.488051] usb 2-2: new low-speed USB device number 2 using uhci_hcd
[    5.664530] usb 2-2: New USB device found, idVendor=046d, idProduct=c03e
[    5.664593] usb 2-2: New USB device strings: Mfr=1, Product=2,
SerialNumber=0
[    5.664645] usb 2-2: Product: USB-PS/2 Optical Mouse
[    5.664682] usb 2-2: Manufacturer: Logitech
[    5.908116] usb 3-1: new full-speed USB device number 2 using uhci_hcd
[    6.093087] usb 3-1: New USB device found, idVendor=03f0, idProduct=0a01
[    6.093150] usb 3-1: New USB device strings: Mfr=1, Product=2,
SerialNumber=12
[    6.093202] usb 3-1: Product: hp scanjet scanner
[    6.093237] usb 3-1: Manufacturer: Hewlett-Packard
[    6.093272] usb 3-1: SerialNumber: CN66PSR1SZ
[   14.146791] usbcore: registered new interface driver usbhid


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