White screen on Windows

[bordaigorl]

White screen on Windows

[mrwth]

I made the edit and it works now! Thanks!

[wouterdhooghe]

Great project! This is the furthest I got on windows to an actual screencast of the remarkable input.

However I can confirm the white screen on windows 10. The red dot does show though and moves along with the remarkable stylus. Unfortunately no actual pen strokes are displayed in the application window. Also the standard orientation seems wrong: landscape with x and y inverted.

[bordaigorl]

I tested it on Win10 and it works out of the box for me.
Can you try to see which step is breaking?
Maybe inject some debug prints with

    self.fbworker.signals.onNewFrame.connect(lambda image: print("ok"))

after line 130.

[wouterdhooghe]

Hey thanks for your quick response. I added the debug print but it doesn't show any output in the console so i guess the program does not reach this line? I'm not very good with python so i couldn't detect which line fails.

[bordaigorl]

Ok I will need help in debugging this since I cannot reproduce it.
Can you tell me which options you are using?
And which version of PyQt?
What do you see in the standard output?
Also, can you make sure you are testing the latest version of rmview?
Have you installed LZ4 in your remarkable?

[mrwth]

I have the same issue. On Windows 10, Anaconda distribution of Python 3.7 (all packages up to date), pyqt has version 5.9.2. LZ4 is on the remarkable. No options (also no options file). Nothing in the output (after "Connected to 10.11.99.1"). The newest version of rmview.

One additional thing which might be helpful - after the connection the displayed white window covered only a part of the remarkable screen - when I moved the pen, the red dot was not at the corresponding position. After I moved the pen to all the corners, this little problem disappeared.

[bordaigorl]

Can you try the "fit to window" action from the context menu or "Actual size" or resizing the window? Trying to understand if it's a display problem

[bordaigorl]

Also: can you try commenting out lines 73-77 (included) in workers.py and see if you get an error message?

[mrwth]

commenting out produces Error: <class '_lz4framed.Lz4FramedNoDataError'> in the terminal and a window with the message "Please check your reMarkable is properly configured with LZ4 installed".
(resizing the window doesn't change anything)

[bordaigorl]

Ok that helps. It would seem that LZ4 is working on the remarkable, but somehow no data is being transmitted.
Could you add

print(rmerr.read().decode('ascii'), rmstream.channel.recv_exit_status())

before line 82 in workers.py?

[mrwth]

gives me
NameError: name 'rmerr' is not defined

edit: SORRY, now I indented in the file

gives me
126

[bordaigorl]

AH!!!! try running

ssh 10.11.99.1 chmod +x lz4 

[mrwth]

done; now I get

Error: <class 'AttributeError'> type object 'QImage' has no attribute 'Format_Grayscale16'

[bordaigorl]

Progress!
Version of PyQt?

[mrwth]

5.9.2

[bordaigorl]

Ah there's the problem! From the docs:

QImage.Format_Grayscale16 The image is stored using an 16-bit grayscale format. (added in Qt 5.13)

Now, one solution is upgrading Qt. The other is replacing
QImage.Format_Grayscale16 with QImage.Format_RGB16 in workers.py.

[bordaigorl]

Fantastic. I'll push a fix. Thanks so much for helping me debug!