[sane-devel] HP ScanJet Pro 2000 sudden failure

[Ellis Cohen]

Due to a hard failure in the boot loader, I had to completely re-install my Fedora 33 system.  (My attempts to just re-install the boot loader didn't work.)  Everything's once again working (including my printer) *except* for the HP ScanJet Pro 2000 s2 scanner.

'scanimage -L' displays
> device `plustek:libusb:003:005' is a Canon CanoScan N1220U flatbed scanner
> device `airscan:e0:HP ScanJet Pro 2000 s2 (USB)' is a eSCL HP ScanJet Pro 2000 s2 (USB) ip=127.0.0.1
> device `hpaio:/usb/HP_ScanJet_Pro_2000_s2?serial=CN09EA204V' is a Hewlett-Packard HP_ScanJet_Pro_2000_s2 all-in-one
> device `hpaio:/net/scanjet_pro_2000_s2?ip=127.0.0.1&queue=false' is a Hewlett-Packard scanjet_pro_2000_s2 all-in-one

(The Canon N21220U is an oldie-but-goodie that I can access, but isn't my concern.  I want to use the ScanJet Pro.)

No matter whether ipp-usb is
 * installed and running,
 * installed and not running, or
 * not installed,
and regardless of which of the three choices above I'm using to access the scanner,
in all cases I get the unhelpful diagnostic message
> Failed to open device `hpaio:/usr/HP_ScanJet_pro_2000_s2?serial=CN09EA204V'
> Error during device I/O.

I also tried removing the 'hplip' package, but that didn't help either.

Any thoughts on what might be broken?  Any debugging I could enable that might shed light?  Any further information I could provide to help diagnose?

Thanks for any help you can provide.

Ellis


On Fri, Mar 5, 2021, at 9:33 AM, Ellis Cohen wrote:
> Thanks for your help!   IPP-over-USB *was* the culprit (although I have no idea exactly what latest-update from Fedora changed previous behavior).
> 
> I determined that for my configuration, it was least-invasive to simply execute
> 
>> ipp_usb_was_active=false
>> sudo systemctl --quiet is-active ipp-usb
>> if [ $? -eq 0 ] ; then
>>    ipp_usb_was_active=true
>>    sudo systemctl stop ipp-usb
>> fi
> 
> before scanning, and
> 
>> ${ipp_usb_was_active} && sudo systemctl start ipp-usb
> 
> afterwards.
> 
> Again, thanks muchly!
> 
> Ellis
> 
> 
> On Thu, Mar 4, 2021, at 9:43 PM, Zdenek Dohnal wrote:
>> 
>> On 3/4/21 7:39 PM, Alexander Pevzner wrote:
>> >
>> > 2) Remove hplip and scan driverlessly:
>> >
>> >     dnf erase hplip
>> >     dnf install sane-airscan
>> >
>> Btw, sane-airscan is installed by default if you have sane-backends
>> installed :) . I changed that later...
>> 
>> -- 
>> Zdenek Dohnal
>> Software Engineer
>> Red Hat Czech - Brno TPB-C
>> 
>> 
>> 
>> 
>> *Attachments:*
>>  * OpenPGP_signature
> 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://alioth-lists.debian.net/pipermail/sane-devel/attachments/20210516/71c32b91/attachment.htm>