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Old 09-29-2019, 03:02 PM   #10
pazos
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Posts: 1,271
Karma: 2200049
Join Date: Apr 2014
Device: BQ Cervantes 4
Quote:
Originally Posted by DomesticExtremis View Post
Yes I noticed that too, but I think it is a secondary problem at the moment. I will try your suggestion at some point.
Ok, If you're serious with this you can try to update the e-ink screen from u-boot. I remember that u-boot have some nice commands to tinker with the epd. Sadly it has a watchdog that will trigger a reset if a certain flag isn't cleared in a few seconds, so you might need to modify the environment and hook there the commands used to refresh the screen.

I'm attaching my own notes here: https://www.mobileread.com/forums/sh...3&postcount=10. (and following posts). Do not attempt to repurpose the u-boot / kernel trees for your device as they come from a slightly different product (Aura HD)

My humble guess: your screen is borked. It could be a crack on the substrate or a single failure that make your screen eats more than 16V, triggering the UVLO
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