The screen does not refresh fully when entering some puzzles

[patapon888]

I am on an PB700k3 (Era Color). And when i go in some puzzles, the gray colors do not show and i need to refresh the screen.

[SteffenBauer]

Can you give me a bit more information here? What exactly do you mean with "the gray colors do not show"? And does this only happen with certain puzzles? Is the issue reproducible? Do you use the "repaint" button up right to refresh the screen?
If possible, can you take a photo of the screen when the issue occured, and post it here?

[patapon888]

Before repaint:

After repaint:

It happens when going in a puzzle normally.

(Btw, also happens in Taranis)

[SteffenBauer]

You might be onto something. Your device has a color screen? I found reports that screen update on Color devices should be handled differently that on purely B/W PocketBook devices. Currently researching how to handle that.

[SteffenBauer]

@patapon888

Unfortunately I don't have a color device to test. Can you download an experimental build under this link, try if the problem still occurs with it, and write a short report here? This is to test if a possible solution that I found works at all.

The app version, under the "About" box in the game chooser, should show "20251029-experimental" for this build.

https://drive.google.com/file/d/11mEztTSVcuqW9FBk7lnkDZtjjkgXlWue/view?usp=sharing

[patapon888]

Unfortunately, your dev build did not fix the issue. (Nothing changed)

(For some reason, the video of it won't upload, so here is a link to it):

https://drive.google.com/file/d/1MFNkK2c_yeZ0Ucw4ICCJmyqnuNJt-HHH/view?usp=drivesdk

(The low light is to have a better camera focus)

[SteffenBauer]

Thanks for testing this. The test was trying a modified screen update that I found in these two issue threads for KoReader where render problems with color devices are mentioned, and the devs there introduced a check whether the device has a color screen, and modify the screen update procedure accordingly.

Unfortunately it does not seem to work here. Can you confirm that there is no difference in behavior to the official build of the app?

It is interesting that the screen is rendered correct after forcing a manual update. Next thing I will try is to look into the initial screen drawing when a new puzzle is started.

[patapon888]

I could not find any difference between both versions.

[SteffenBauer]

Okay, then one more try:

https://drive.google.com/file/d/13m3VMN0mEOJ_as1raSMkwbNLt7228GIG/view?usp=sharing

This is "20253031-experimental". As your screen looks okay after a forced manual update, I added a second update cycle when a game is launched.

Lets hope this works now. Please test also other situations when the game screen is redrawn, so returning from the game params screen, from a game settings screen, device sleep, and when launching from the game choose via the menu "resume last game".

[patapon888]

Almost perfect, the issue only happens after going in settings.

(Video here: https://drive.google.com/file/d/1t8nY849hVjtseZb4iu-pTq3m27rb2mcA/view?usp=drivesdk)

[SteffenBauer]

I uploaded a new nightly release, please test this:

https://github.com/SteffenBauer/PocketPuzzles/releases/download/20251102/SGTPuzzles.app.zip

I added extra screen updates for all screens (chooser, game, and params). I think this is the best I can do here, lets hope this solves the issue.

[patapon888]

so, i updated the firmware (6.8 -> 6.10) and now it also happens in the app selection screen (and settings app), so, i think it is now a system bug (still happens when pressing the back button instead of the ok one in the puzzles settings, and happens also a bit everywhere more rarely)