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 <[email protected] > <mailto:[email protected]>> 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
OpenPGP_signature
Description: OpenPGP digital signature
