PJLink not accepting password to PT-EW650U Projector
logancof opened this issue · 12 comments
We have tried changing every password on the projector to make it work. We used the default password (panasonic) and even created a service password. Our companion connects to the projectors ip, but when we hit a button, it says the password is incorrect.
instance(pjlink): Authentication error. Password not accepted by projector
I'm going to transfer this to the PJ Link module repository since it sounds restricted to functionality within that. Thanks!
We're experiencing the same issue with another Panasonic model.
Is anyone looking at these issues?
If someone else than me could look at the API spec and the code for password with fresh eyes, that would help a lot. I am blinded by my own code, as I cannot see reason it does not work.
I looked into this. I think the API spec has a typo.
The digest example states that 498e4a67 JBMIAProjectorLink should generate 5d8409bc1c3fa39749434aa3a5c38682 but it doesn't.
Remove the space between: 498e4a67JBMIAProjectorLink then it does result in 5d8409bc1c3fa39749434aa3a5c38682
@istnv is definitely on to something here.
And the API spec says:
The password string “JBMIAProjectorLink” is added to the end of the random sequence “498e4a67” issued by .the Projector/Display
It doesn't say that it should be added with a space. So there is for sure a typo in the next sentence:
The digest of the resultant string “498e4a67 JBMIAProjectorLink” is carried out with the MD5 algorithm.
Great research guys! I hate when specs are wrong on so important stuff. If anyone could test the latest 2.0 build now, that would be awesome! I still have a possible update if the projector is not responding for a second command within a second.
I will test it tonight.
I looked into this because I'm adding companion control to a few things in the theater, one being the projector that is upstairs from my primary position. I finally got the chance to wire it up and the new build works on a NP-PX750U with the password set.
Closing this as this seems to have been the issue all along, and it should be working for everyone now.
@haakonnessjoen I've now tested it on my Panasonic PT-VZ580, and unfortunately the issue remains.
Since companion doesn't output much debugging info, it's hard to see what happens.
I've tested with a generic pjlink client, and that works fine with my projector.
I did try to uninstall companion before installing the latest version, to make sure that I have the latest version of the pjlink plugin.
This page has PJLink specifications and testing utilities:
https://pjlink.jbmia.or.jp/english/dl_class2.html
@haakonnessjoen When can Dan's fix be merged in to 2.0 beta?