[sane-devel] HP ScanJet Pro 2000 sudden failure

[Zdenek Dohnal]

You're welcome.

However, the problem with plugin is you need to update it every new
hplip version.

So as I originally wrote to Ellis, use driverless scanning if your
device supports it.

On 5/18/21 1:30 PM, Donald Lock wrote:
> Dear Zdenek, 
>
> Your advice helped me with my LaserJet Pro MFP 427dw. Scan function
> works perfectly now.  Thank you!
>
> Don
>
> On Tue, May 18, 2021, 6:38 AM Zdenek Dohnal <zdohnal at redhat.com
> <mailto:zdohnal at redhat.com>> wrote:
>
>     If you want to use hplip for scanning and its hpaio backend, you
>     will probably need their proprietary plugin which you can download
>     by 'hp-plugin -i'. Although their web page says otherwise, most of
>     their scanning devices need their proprietary plugin.
>
>     I strongly recommend uninstalling hplip and using ipp-usb +
>     sane-airscan/sane-escl if your device supports it, as it supports
>     in your case.
>
>     On 5/16/21 10:26 PM, Ellis Cohen wrote:
>>     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
>>>>
>>>
>>
>     -- 
>     Zdenek Dohnal
>     Software Engineer
>     Red Hat Czech - Brno TPB-C
>
-- 
Zdenek Dohnal
Software Engineer
Red Hat Czech - Brno TPB-C

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