jon bird, thank you for reporting this and helping make Ubuntu better.
To see if this is already fixed in Ubuntu, could you please test for
this via http://cdimage.ubuntu.com/daily-live/current/ and advise to the
results?
** Package changed: sane-backends (Fedora) => sane-backends (Ubuntu)
** Description changed:
- I have a HP Scanject 2100c and a Canoscan LIDE-25 both of which use the
- Sane plustek backend for comms. My PC only has a USB 3 root hub, when
- either of these devices are connected, either directly or via an
- external USB 2 hub, they do not work.
+ I have a HP Scanject 2100c which uses the Sane plustek backend for
+ comms. My PC only has a USB 3 root hub, when the device is connected,
+ either directly or via an external USB 2 hub, it does not work.
In general (although not always), 'scanimage -L' will detect the scanner
ok:
device `plustek:libusb:001:012' is a Hewlett-Packard Scanjet 2100c
flatbed scanner
however there is always about a 30s delay before the shell prompt is
returned. Scanning always fails however, using the suggested method on
the sane HOW-TO page:
scanimage -vvv -format pnm >outfile.pnm
Calling sane_exit
is the usual response. By enabling debug on the plustek backend, the
response I normally get results in the following:
[plustek] Vendor ID=0x03F0, Product ID=0x0505
[plustek] usbio_DetectLM983x
[plustek] * could not read version register!
[plustek] open failed: -1
[plustek] sane_get_devices (0x7fff0686dbc8, 0)
In an effort to try and diagnose this, I've build the latest SANE
backends from scratch and tried out the latest libusb none of which has
resolved the issue. My original kernel was a 3.5.x, I pushed it up to
3.8.0-30 this also made no difference.
My guess based on what I've seen is that this is related to the USB 3
hub. The HP Scanjet worked ok on my old Linux box (a 2.6.27 kernel with
- USB 2 hub) and I've had the Canon one working (albeit not that reliably)
- on a Raspberry Pi with a 3.6.11 kernel. The key difference (aside from
- this being a 64 bit flavour of Linux) is the USB.
+ USB 2 hub). The key difference (aside from this being a 64 bit flavour
+ of Linux) is the USB.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: libsane 1.0.22-7ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-30.44~precise1-generic 3.8.13.6
Uname: Linux 3.8.0-30-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.5
Architecture: amd64
Date: Mon Nov 11 19:41:08 2013
InstallationMedia: Ubuntu-Server 12.04.2 LTS "Precise Pangolin" - Release
amd64 (20130214)
MarkForUpload: True
ProcEnviron:
- LANGUAGE=en_GB:en
- TERM=xterm
- PATH=(custom, no user)
- LANG=en_GB.UTF-8
- SHELL=/bin/bash
+ LANGUAGE=en_GB:en
+ TERM=xterm
+ PATH=(custom, no user)
+ LANG=en_GB.UTF-8
+ SHELL=/bin/bash
SourcePackage: sane-backends
UpgradeStatus: No upgrade log present (probably fresh install)
** Summary changed:
- sane plustek backend not working on USB 3 root hub
+ HP Scanject 2100c not working on USB 3 root hub
** Changed in: sane-backends (Ubuntu)
Importance: Undecided => Low
** Changed in: sane-backends (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1250196
Title:
HP Scanject 2100c not working on USB 3 root hub
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