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Old 07-20-2021, 01:36 PM   #1
Bonko
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Device: Onyx Boox Poke 3, Onyx Boox Note Air
Low-resolution on Poke 3

I thought that my problem must be easy to solve and I searched this forum and the github issues but could not find anything, so apologies if I missed something.

I installed Koreader via the github release on my Onyx Boox Poke 3. And the problem is that everything is very low-res, it looks like heavy dithering. And thus very bad for reading. Not anywhere near as sharp as anything else on the device.

Of course I disabled app whitening but that did not help either. I don't have this problem with any other third-party app like e.g. the kindle app.

One thing that I thought might cause this is when I first opened the app it said that it is assuming my device is a color e-ink device and that I could disable it in settings, which I did. But it did not help. It could be the case that this is just a setting not updated maybe?

Any help would be much appreciated!

I added a photo to show the problem. Compared to the build-in reader it is much more stark.
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Old 07-21-2021, 11:43 AM   #2
JSWolf
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I don't see your photo.
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Old 07-21-2021, 01:35 PM   #3
pazos
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Quote:
Originally Posted by Bonko View Post
I thought that my problem must be easy to solve and I searched this forum and the github issues but could not find anything, so apologies if I missed something.

I installed Koreader via the github release on my Onyx Boox Poke 3. And the problem is that everything is very low-res, it looks like heavy dithering. And thus very bad for reading. Not anywhere near as sharp as anything else on the device.

Of course I disabled app whitening but that did not help either. I don't have this problem with any other third-party app like e.g. the kindle app.
.
See this thread: https://www.mobileread.com/forums/sh...d.php?t=332125. Do what @Cellaris suggested. Disable all "optimizations". These are intended for android apps, which aren't optimized for e-ink devices, and would totally bork KOReader. If you optimize other apps uncheck the "system settings" for this app.


Quote:
Originally Posted by Bonko View Post
One thing that I thought might cause this is when I first opened the app it said that it is assuming my device is a color e-ink device and that I could disable it in settings, which I did. But it did not help. It could be the case that this is just a setting not updated maybe?
That's normal. All certified android devices are color. There's no API to check if a device has e-ink screen. What we do is whitelist devices that have a working EPD driver (other than let the window manager to do its stuff automatically). The setting has nothing to do with your issue.
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