Re: [gentoo-user] Unable to locate printer

[Thelma <thelma@sys-concept.com>]

On 1/29/24 04:23, Michael wrote:
> On Sunday, 28 January 2024 19:17:06 GMT Thelma wrote:
>> On 1/28/24 11:46, Michael wrote:
>>> On Sunday, 28 January 2024 17:43:22 GMT Thelma wrote:
>>>> Systems show Avahi-daemon status: started.
>>>> but it I don't know how it helps me find a local printer.
>>>>
>>>> I'm puzzled as printers were working last week without any problems.
>>>> I did not do any update or modification to the system but all of a sudden
>>>> they stop working "Unable to locate printer"
>>>>
>>>> The solution was to change printer setting:
>>>>
>>>> lpd://BRN30055C898DF9/BINARY_P1
>>>> lpd://brother-5370/BINARY_P1
>>>>
>>>> with:
>>>> lpd://printer-IP-address/BINARY_P1
>>>> lpd://printer-IP-address/BINARY_P1
>>>>
>>>> How to set  Avahi-daemon to start automatically deleted printer?
>>>
>>> I don't think avahi is needed unless you are printing from different
>>> temporary clients and you want the printers to be automatically
>>> discovered on the network.  If this is not your use case, you could try
>>> something like this:
>>>
>>> lpadmin -p 3170-color -E -v ipp://<IP_address_here>/BINARY_P1 -m
>>> everywhere
>>>
>>> Which will use the CUPS driverless method:
>>>
>>> https://wiki.gentoo.org/wiki/Driverless_printing
>>
>> These instruction on Gengoo Driveless printing are not clear.
>> I tried to follow this example and run:
>>
>> lpadmin -p foobar -E -v ipp://10.0.0.106/ipp -m everywhere
>>
>> did not create file: foobar.ppd in /etc/cups/ppd/
>>
>> ls -al /etc/cups/ppd/
>> -rw-r----- 1 root lp   26945 Nov 30  2020 3170-color.ppd
>> -rw-r----- 1 root lp   26929 Nov 30  2020 3170-color.ppd.O
>> -rw-r----- 1 root lp   16460 Jan 27 13:48 5370.ppd
>> -rw-r----- 1 root lp   25537 Jan 27 13:46 5370.ppd.O
>> -rw-r--r-- 1 root root     0 Dec 13 17:47 .keep_net-print_cups-0
>> -rw-r----- 1 root lp   16476 Apr  7  2022 L6200.ppd
>> -rw-r----- 1 root lp   16476 Apr  7  2022 L6200.ppd.O
> 
> Did you run the lpadmin command as root?
> 
> 
>> But it did create foobar local raw printer name foobar, and when I tried to
>> print to it, it spit out strange characters.
> 
> Where did you find this local raw printer?

locahost:631

When I select printer it show what driver it using.

> 
> What does 'lpstat -t' run as your plain user show?

as user:  $ lpstat -t
scheduler is running
no system default destination
device for 3170-color: lpd://10.0.0.105/BINARY_P1
device for 3170-color2: ipp://10.0.0.105/BINARY_P1
device for 5370: lpd://10.0.0.106/BINARY_P1
device for 5370-bw: ipp://10.0.0.106/ipp/print
3170-color accepting requests since Sat 27 Jan 2024 06:12:01 PM MST
3170-color2 accepting requests since Sun 28 Jan 2024 12:07:59 PM MST
5370 accepting requests since Mon 29 Jan 2024 08:55:47 AM MST
5370-bw accepting requests since Mon 29 Jan 2024 10:40:51 AM MST
L6200 accepting requests since Thu 07 Apr 2022 12:24:10 PM MDT
printer 3170-color is idle.  enabled since Sat 27 Jan 2024 06:12:01 PM MST
printer 3170-color2 is idle.  enabled since Sun 28 Jan 2024 12:07:59 PM MST
printer 5370 is idle.  enabled since Mon 29 Jan 2024 08:55:47 AM MST
printer 5370-bw disabled since Mon 29 Jan 2024 10:40:51 AM MST -
	The printer configuration is incorrect or the printer no longer exists.


> 
>> I noticed you substitute after <IP-address>/ipp with
>> <IP_address_here>/BINARY_P1 This is not very clear in Gentoo Documentation
>>
>> Trying it:
>> lpadmin -p 3170-color2 -E -v ipp://10.0.0.105/BINARY_P1 -m everywhere
>>
>> It did not create any file name: 3170-color2.ppd ; but it did create entry
>> in printer entry  3170-color2 - local raw printer and printing to it works
>> OK.  Thank you!
> 
> You can try moving temporarily all .ppd files from /etc/cups/ppd/ and try
> running the lpadmin command again.  Perhaps if it finds some ppd file already
> in there with the same settings it won't create a new file.
> 
> 
>> Can you explain the  <IP-address>/ipp vs. <IP_address_here>/BINARY_P1
> 
> If you login into the printer's admin GUI with your browser and navigate to
> Network, Services, you will see a list of service names.  You can try
> configuring CUPS with each one at a time to see what works for you.

I'm using XFCE it doesn't have GUI setting for printers.  But I can login via http://localhost:631 to see the printers