Issue or configuration problem? HP 5740 and docker on raspberry pi in portainer

[woodpecker6]

Hi all,
I am using the docker of this cool tool via portainer on a raspberry pi 4. This works sometime flawlessly, but sometimes it stops in between pages (now after 5) and seems to loose connection. Selecting on the printer HP 5740 will not detect show any option to scan to. Error is "Computer is not detectable".
I tried "latest" and also 1.9.0.
Docker is in bridge mode and printer is connected via LAN. WLAN before was same result (blocked to go online via router). I use adf.
Sometimes I also get an connection error in the log. When I get again I will post.
...
Iteration 2 (Errors so far: 0)
Discovered available host destinations: Raspi (Duplex), BigWilma, node-hp-scan-to (BigWilma)
Waiting for scan event from: Raspi (Duplex) (1c8531ef-b820-1f08-9983-d0bf9c29d53e)
Waiting for user input (attempt 1 of 50)
Selected shortcut: SavePDF
Scan mode: Simplex
Scan event captured, saving scan #2
Converting scan to PDF…
ADF status: Loaded
Creating job with settings: {"inputSource":"Adf","contentType":"Document","resolution":300,"mode":"Color","width":2550,"height":4200,"isDuplex":false}
New job created: http://192.168.188.27:8080/Jobs/JobList/9
Downloading page 1 → /tmp/scan-to-pcGmPdmk/scan2_page1.jpg
Downloading page 2 → /tmp/scan-to-pcGmPdmk/scan2_page2.jpg
Downloading page 3 → /tmp/scan-to-pcGmPdmk/scan2_page3.jpg
Downloading page 4 → /tmp/scan-to-pcGmPdmk/scan2_page4.jpg
Downloading page 5 → /tmp/scan-to-pcGmPdmk/scan2_page5.jpg

--> then it stopped with paper in the printer still.

Let me know what to post to clear this issue for me. If needed I can raise a issue ticket also, but I assume it is more a misconfiguration.

I donated some time back already to keep this great project running and blame HP for not supporting linux here.
Thx a lot

[manuc66]

Hi @woodpecker6

Sorry for the long delay — and thanks again for your past donation, really appreciated.

If you’re still experiencing the issue, I’d be very interested in seeing the debug logs from the moment the problem starts happening, up until the next scan attempt.

With the ADF, a single scan job is created on the device, and the printer sends each page sequentially. The logs should help us understand what’s going wrong. For example, we might see:

• a file download getting stuck,
• the printer stopping page transmission because it thinks the ADF is empty,
• a connection or protocol error,
• or something else that could give us a clue.

If you can reproduce the issue and provide the logs, that would help a lot.

Thanks!

[woodpecker6]

Hi @manuc66 : Thx a lot for your reply! Meanwhile I switched to my main desktop PC and use it via npx. There I have not experienced any issue so far. So I assume it should work on the raspi as well. I reproduced and have attached the log. If you need another log on top, let me know which and where I can find and I add. Based on what I see it will not help much, as it just stops. Printer is showing "Scanning ..." for > 5 minutes now. Then I took the log from portainer.

_node-hp-scan-to_logs.txt

[manuc66]

@woodpecker6 Hmm, can I ask you to enable DEBUG for the log, unfortunately, indeed difficult to identify something wrong with the log provided

[woodpecker6]

Hi, I did that debug, but the issue was not occuring anymore. As I was changing some parts in my smarthome, it might be solved because of this. Earlier I had more traffic related to Modbus via TCP on the network. I tried today multiple 12 pages runs and they all passed on the raspberry. I will check this going forward, but would say that for now I don't see the issue with your nice tool anymore. I am still not sure why it was not affecting the other PCs I use as scanning sinks.
Cheers for now - I will come back in case I experience anything and post the debug log. Maybe it is like Schrödinger's cat.

Have a nice christmas time !