[sane-devel] HP ScanJet Pro 2000 sudden failure
Ellis Cohen
ellis_cohen at pobox.com
Fri Mar 5 01:47:31 GMT 2021
Plot thickens. Sigh :-(
I tried
% sudo dnf install ipp-usb
% sudo systemctl {enable,start,status} ipp-usb
which showed that ipp-usb.service was running
% sudo dnf install sane-airscan
which said the package was already installed
Got some suggestions from https://wiki.debian.org/CUPSDriverlessPrinting, and tried commenting-out the "escl" backend in /etc/sane.d/dll.conf.
% scanimage -L
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
(Note: my Canon N1220U now doesn't show up.)
% xsane
now gives me three choices -- vis.,
eSCL HP ScanJet Pro 2 ip=127.0.0.1 [airscan:e0:HP ScanJet Pro 2000 s2 (USB)]
Hewlett-Pac HP_ScanJet_Pro_2 all-in-one [hpaio:/usb/HP_ScanJet_Pro_2000_s2?serial=CN09EA204V]
Hewlett-Pac scanjet_pro_2000 all-in-one [hpaio:/net/scanjet_pro_2000_s2?ip=127.0.0.1&queue=false]
Unfortunately, selecting any one of these three choices results in an error diagnostic --
Failed to open device `name-of-device': Error during device I/O.
Restoring "escl" to /etc/sane.d/dll.conf did not make any difference.
Any further suggestions, please.
Ellis
On Thu, Mar 4, 2021, at 11:42 AM, Alexander Pevzner wrote:
> On 3/4/21 10:13 PM, Ellis Cohen wrote:
> > Any other suggestion?
>
> OK. Typically USB drivers got broken due to the conflict with ipp-usb on
> devices that support this protocol, but there are may be other reasons
> for hplip to break.
>
> You may try to install ipp-usb, it will enable sane-airscan on HP
> ScanJet Pro 2000.
>
> If HP LaserJet Pro M402dn doesn't support IPP over USB, it will not be
> affected. If M402dn does support IPP over USB, there is a good chance
> that it will work driverlessly as well, and you will not need hplip, or
> you may explicitly blacklist it in the ipp-usb configuration.
>
> --
>
> Wishes, Alexander Pevzner (pzz at apevzner.com)
>
>
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