Re Scanner

Re Scanner

[Gottfried]

[-- Attachment #1.1.1: Type: text/plain, Size: 713 bytes --]


-
Hi Guixers,

for your information:

in Arch Linux I read, that a HP Printer needs the programm
  "python-pillow" so that the scanner will work.

I installed it, but it didn't help.

Somebody else in Arch Linux said that HP Printer/Scanner will give 
trouble again and again, so he changed to a "brother" printer in order 
to get scanning work.

When I run some hp programms like "hp-scan" it says:

error: No device selected/specified or that supports this functionality.


"lsusb" shows, that my printer is connected.
Bus 003 Device 007: ID 03f0:2c12 HP, Inc Officejet J4680

why does than "hp-scan" say, there is no device?

So may be we are the solution a bit closer?

Gottfried

[-- Attachment #1.1.2: OpenPGP public key --]
[-- Type: application/pgp-keys, Size: 3191 bytes --]

[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 840 bytes --]

Re: Re Scanner

[(]

Hi Gottfried :)

On Sat Aug 20, 2022 at 2:28 PM BST, Gottfried wrote:
> in Arch Linux I read, that a HP Printer needs the programm
>   "python-pillow" so that the scanner will work.

Guix is not like Arch; you don't need to install libraries to make a
program work.

> When I run some hp programms like "hp-scan" it says:
>
> error: No device selected/specified or that supports this functionality.

The problem is likely that you don't have the required nonfree driver
that the printer/scanner needs. Recall that one of the hplip programs
tried to install a nonfree driver (this functionality should ideally be
patched out, as Guix is a FSDG-compliant system; looks like it slipped
under the radar).

    -- (

Re: Re Scanner

[(]

On Sat Aug 20, 2022 at 2:41 PM BST, ( wrote:
> Guix is not like Arch; you don't need to install libraries to make a
> program work.

(Unless there's a bug with the package.)

    -- (

Re: Re Scanner

[(]

On Sat Aug 20, 2022 at 2:42 PM BST, ( wrote:
> (Unless there's a bug with the package.)

((Which is highly unlikely if tests are enabled for the package.))

    -- (