[sane-devel] Cannot get hp scanjet 8200 working
wd-p at trolink.de
Fri Nov 25 08:57:17 UTC 2016
great you're taking care for me.
A few days ago I filed a bug report which contains most of your
The test you asked for have already been carried out:
> - Test the scanner with the current Ubuntu/SANE distribution on
> another PC. If it scans OK there, this would rather rule out the
> scanner itself as the problem.
On my laptop, running ubuntu 16.04, the problem occurs as well.
And: On my desktop, with fedora 24 - the problem ALSO EXISTS
> - Test your PC's USB setup with some non-scanner high-speed transfers.
> One way would be to plug in a USB hard driver or data stick, and then
> "dd if=/dev/sdB bs=$((1024*1024)) of=/dev/null" (substitute the
> correct device identifier) and see if the transfer works successfully
> or if it triggers the USB hang.
> (Based on what you report, I've got a nasty feeling that your
> motherboard host controller may be ill... works OK for low-speed
> transfers, but hangs up somehow during sustained high-speed
> transfers. The fact that it times out and leaves the bus hung
> is troubling.)
Last days, I copied 3 250GB USB hard disks via USB. No problems.
> - Boot up a different Linux distribution on your laptop (e.g. Knoppix)
> and see if you can get the scanner to work reliably. If so it might
> point to a recent change in your normal kernel and/or libusb as
> being responsible.
With a debian 8.6, kernel 3.2 (or so), booted for an external USB hdd -
NO PROBLEM AT ALL. Multiple pages, high resolutions - everything fine.
My conclusions from these experiments:
* scanner is o.k.
* desktop is o.k.
* kernel 4.X causes problems, distro-independently
Let me know if I can provide further information.
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