[sane-devel] Canon on Raspberry Pi

[Mac Goever]

Hi Sean,

yes, I can do that. Here are some log entries. I suspected the device
to disappear right after the "reset" entry. But this is not the case.
It might also disappear some seconds after the event.

---
[  328.405481] usb 1-1.4: new high-speed USB device number 5 using dwc_otg
[  328.537196] usb 1-1.4: New USB device found, idVendor=05e3,
idProduct=0605, bcdDevice= 6.0b
[  328.537212] usb 1-1.4: New USB device strings: Mfr=0, Product=1,
SerialNumber=0
[  328.537221] usb 1-1.4: Product: USB2.0 Hub
[  328.538152] hub 1-1.4:1.0: USB hub found
[  328.538449] hub 1-1.4:1.0: 4 ports detected
[  328.675475] usb 1-1.2: reset high-speed USB device number 4 using dwc_otg
[  334.252684] usb 1-1.2: USB disconnect, device number 4
[  338.085480] usb 1-1.4.3: new high-speed USB device number 6 using dwc_otg
[  338.216965] usb 1-1.4.3: New USB device found, idVendor=04a9,
idProduct=190e, bcdDevice= 7.04
[  338.216981] usb 1-1.4.3: New USB device strings: Mfr=1, Product=2,
SerialNumber=0
[  338.216991] usb 1-1.4.3: Product: CanoScan
[  338.217000] usb 1-1.4.3: Manufacturer: Canon
[  348.615487] usb 1-1.4.3: reset high-speed USB device number 6 using dwc_otg
[  781.257336] usb 1-1.4.3: USB disconnect, device number 6
[  787.105074] usb 1-1.4.3: new high-speed USB device number 7 using dwc_otg
[  787.236590] usb 1-1.4.3: New USB device found, idVendor=04a9,
idProduct=190e, bcdDevice= 7.04
[  787.236620] usb 1-1.4.3: New USB device strings: Mfr=1, Product=2,
SerialNumber=0
[  787.236630] usb 1-1.4.3: Product: CanoScan
[  787.236639] usb 1-1.4.3: Manufacturer: Canon
[  791.095083] usb 1-1.4.3: reset high-speed USB device number 7 using dwc_otg
[  981.232218] usb 1-1.4.3: USB disconnect, device number 7
[  991.254819] usb 1-1.4.3: new high-speed USB device number 8 using dwc_otg
[  991.386331] usb 1-1.4.3: New USB device found, idVendor=04a9,
idProduct=190e, bcdDevice= 7.04
[  991.386348] usb 1-1.4.3: New USB device strings: Mfr=1, Product=2,
SerialNumber=0
[  991.386358] usb 1-1.4.3: Product: CanoScan
[  991.386367] usb 1-1.4.3: Manufacturer: Canon
[ 2101.778329] usb 1-1.4.3: USB disconnect, device number 8
[ 2279.596695] usb 1-1.4: USB disconnect, device number 5
[78022.354395] usb 1-1.2: new high-speed USB device number 9 using dwc_otg
[78022.486136] usb 1-1.2: New USB device found, idVendor=05e3,
idProduct=0605, bcdDevice= 6.0b
[78022.486152] usb 1-1.2: New USB device strings: Mfr=0, Product=1,
SerialNumber=0
[78022.486161] usb 1-1.2: Product: USB2.0 Hub
[78022.487104] hub 1-1.2:1.0: USB hub found
[78022.487402] hub 1-1.2:1.0: 4 ports detected
[78022.804366] usb 1-1.2.3: new high-speed USB device number 10 using dwc_otg
[78022.935681] usb 1-1.2.3: New USB device found, idVendor=04a9,
idProduct=190e, bcdDevice= 7.04
[78022.935690] usb 1-1.2.3: New USB device strings: Mfr=1, Product=2,
SerialNumber=0
[78022.935695] usb 1-1.2.3: Product: CanoScan
[78022.935699] usb 1-1.2.3: Manufacturer: Canon
[78032.084421] usb 1-1.2.3: reset high-speed USB device number 10 using dwc_otg
---

HTH

Martin

On Sat, May 16, 2020 at 7:52 PM Sean Greenslade <sean at seangreenslade.com> wrote:
>
> On May 15, 2020 11:30:30 AM PDT, Mac Goever <macgoever at gmail.com> wrote:
> >Hoi,
> >
> >forgot an essential info: The hardware is a Pi 3 Ver 1.2 Hardware
> >Revision: a02082
> >
> >On Fri, May 15, 2020 at 8:08 PM Mac Goever <macgoever at gmail.com> wrote:
> >>
> >> Hi everyone,
> >>
> >> as I read one can get support on this Mailinglist, I shall give it a
> >> shot with my setup.
> >> I have a running raspbian (Buster / 10 / PI 3B+) with all packets
> >> upgraded every 24h.
> >>
> >> Sane Version is:
> >> --
> >> scanimage -V
> >> scanimage (sane-backends) 1.0.27; backend version 1.0.27
> >> --
> >>
> >> When connecting a Canon LiDE 120, sane-find-scanner gives me:
> >> --
> >> [...]
> >> found USB scanner (vendor=0x04a9 [Canon], product=0x190e [CanoScan])
> >> at libusb:001:008
> >> [...]
> >> --
> >> which is stable over hours and days.
> >>
> >> Problem occurs with scanimge -L. About 10 seconds after pugging in
> >the
> >> scanner, the device gets detected:
> >> --
> >> device `genesys:libusb:001:008' is a Canon LiDE 120 flatbed scanner
> >> --
> >> After these ~10 seconds it disappears and does not come back.
> >> unplugging it and replugging gives another 10 seconds.
> >>
> >> I suspected a power issue, because the LiDE 120 draws it's power via
> >> USB. Unfortunately using a powered hub or a 10Amp power supply does
> >> not change anything. The scanner works without a problem connected to
> >> an Ubuntu notebook with the same sane Version. Tested with USB Hub
> >and
> >> without.
> >>
> >> I already addressed this problem in the IRC and a friendly idler
> >> reproduced the issue.
> >>
> >> Thanks for any efforts
> >>
> >> Martin
>
> Can you show the dmesg output from when you first plug the scanner in until after the scanimage command completes?
>
> --Sean
>
>