MathML display variances in KOReader between Kindle Paperwhite 2 and Boox Nova 2

vijaye7 · 11-10-2023, 01:11 PM

I've been using Boox Nova 2 for quite a while now supplanting my Kindle Paperwhite gen 2. I am trying to read some math epubs (with MathML) on my Nova 2 in KOReader app but all formulas are showing mangled. I am trying to find a solution online to no avail. Many sites mention KOReader indeed supports MathML epubs. I tried on a whim the same book on Paperwhite, also in KOReader; and, voila it displayed the math formulas perfectly.

The screenshot shows same page with formulas in KOReader on Paperwhite (on left) and Nova 2 (on right) side by side.

Why is KOReader in Paperwhite displaying the formulas correctly and not in Nova 2? Can someone shed some light on how to make MathML epub work on Nova2?

https://github.com/rahulsdad/KOReade..._BooxNova2.jpg

NiLuJe · 11-10-2023, 01:35 PM

Are you sure you're actually using a recent version on your Android device?

IIRC, I vaguely seem to recall some vendors bundling a truly horrendous hacked/old version in their in-house app store (and, Onyx being Onyx, that's a fair query ;p).

vijaye7 · 11-10-2023, 02:24 PM

The device itself is not displaying the android version anywhere clearly. The firmware version simply shows as 2023-05-15_11-51_3.3.2_0653eec63.

I am using April release for KOReader - Had a black appear at the bottom of the screen if I use a release later than that.

hugleo · 11-11-2023, 07:28 AM

The black bar on bottom should be fixed with: https://github.com/koreader/android-...ncher/pull/439

Have you tried disabling Onyx optimizations? The default Onyx optimizations change DPI and it might be causing problems.
Is reflow disabled?

vijaye7 · 11-24-2023, 11:00 PM

Yes. I tried disabling all optimizations - no changes.

Thanks for letting me know the fix is there in the link. I am not versed in this technology. I see the git issue link but can you tell me how to use it? I did not find that file in the device.

hugleo · 11-25-2023, 04:14 PM

Quote:

Originally Posted by vijaye7

Yes. I tried disabling all optimizations - no changes.

Thanks for letting me know the fix is there in the link. I am not versed in this technology. I see the git issue link but can you tell me how to use it? I did not find that file in the device.

You can't. That's a non editable file and you will have to wait to be merged in the official or only if you create a personal build apk.

Other than that try an user patch in files that can be edited. Found in last messages in this forum, if hardware rotation is supported (or a third app to do that).
https://www.mobileread.com/forums/sh...240617&page=32

or the thing:
https://github.com/koreader/koreader/issues/10808

vijaye7 · 11-29-2023, 12:21 AM

That rotate workaround worked nicely. Thanks. I am now on the latest KOReader version.

Now just waiting for MathML to work. Perhaps the device needs rooting and loading new Android?

11-10-2023, 01:11 PM	#1
vijaye7 Junior Member Posts: 6 Karma: 10 Join Date: Feb 2015 Device: Boox Nova 2	MathML display variances in KOReader between Kindle Paperwhite 2 and Boox Nova 2 I've been using Boox Nova 2 for quite a while now supplanting my Kindle Paperwhite gen 2. I am trying to read some math epubs (with MathML) on my Nova 2 in KOReader app but all formulas are showing mangled. I am trying to find a solution online to no avail. Many sites mention KOReader indeed supports MathML epubs. I tried on a whim the same book on Paperwhite, also in KOReader; and, voila it displayed the math formulas perfectly. The screenshot shows same page with formulas in KOReader on Paperwhite (on left) and Nova 2 (on right) side by side. Why is KOReader in Paperwhite displaying the formulas correctly and not in Nova 2? Can someone shed some light on how to make MathML epub work on Nova2? https://github.com/rahulsdad/KOReade..._BooxNova2.jpg

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11-10-2023, 01:35 PM	#2
NiLuJe BLAM! Posts: 13,506 Karma: 26047190 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	Are you sure you're actually using a recent version on your Android device? IIRC, I vaguely seem to recall some vendors bundling a truly horrendous hacked/old version in their in-house app store (and, Onyx being Onyx, that's a fair query ;p).

11-10-2023, 02:24 PM	#3
vijaye7 Junior Member Posts: 6 Karma: 10 Join Date: Feb 2015 Device: Boox Nova 2	The device itself is not displaying the android version anywhere clearly. The firmware version simply shows as 2023-05-15_11-51_3.3.2_0653eec63. I am using April release for KOReader - Had a black appear at the bottom of the screen if I use a release later than that.

11-11-2023, 07:28 AM	#4
hugleo Member Posts: 17 Karma: 3776 Join Date: Dec 2018 Device: kobo glo	The black bar on bottom should be fixed with: https://github.com/koreader/android-...ncher/pull/439 Have you tried disabling Onyx optimizations? The default Onyx optimizations change DPI and it might be causing problems. Is reflow disabled?

11-24-2023, 11:00 PM	#5
vijaye7 Junior Member Posts: 6 Karma: 10 Join Date: Feb 2015 Device: Boox Nova 2	Yes. I tried disabling all optimizations - no changes. Thanks for letting me know the fix is there in the link. I am not versed in this technology. I see the git issue link but can you tell me how to use it? I did not find that file in the device.

11-29-2023, 12:21 AM	#7
vijaye7 Junior Member Posts: 6 Karma: 10 Join Date: Feb 2015 Device: Boox Nova 2	That rotate workaround worked nicely. Thanks. I am now on the latest KOReader version. Now just waiting for MathML to work. Perhaps the device needs rooting and loading new Android?