Kindle Firmware 5.8.9 - Page 3

odamizu · 04-23-2017, 01:35 PM

@Isamilis: This issue (missing text that reappears if you go forward a page then back again) persists for me in 5.8.9. So updating to the latest software will not fix the problem.

Isamilis · 04-24-2017, 05:06 AM

Thanks odamizu for the information. It seeems, Amazon has not put priority yet to fix this.

Quote:

Originally Posted by odamizu

@Isamilis: This issue (missing text that reappears if you go forward a page then back again) persists for me in 5.8.9. So updating to the latest software will not fix the problem.

Atunah · 04-24-2017, 12:38 PM

I have had that half page thing once or twice, end of last year maybe? I can't recall. Fall maybe. But I haven't seen it since on any of my devices. I wasn't able to reproduce it then and since its gone for me, I haven't thought about it anymore. Don't think its a wide spread issue. I do know that in my case it was a book that was sideloaded I had converted in calibre. Got from a store I don't normally get books from. Haven't had it with any other side loaded or amazon books. I read mostly my amazon purchases on my kindles.

Not sure how they can address something that only happens to some people.

tomsem · 04-24-2017, 01:12 PM

I'm not seeing 'missing text' issue. Wondering if it involves specific text sizes or fonts? Books with 'enhanced typography' or without?

Recently I've been using Bookerly at size 1 or 2. Before that Ember Bold at size 2.

NullNix · 04-24-2017, 03:57 PM

Quote:

Originally Posted by tomsem

I'm not seeing 'missing text' issue. Wondering if it involves specific text sizes or fonts? Books with 'enhanced typography' or without?

Recently I've been using Bookerly at size 1 or 2. Before that Ember Bold at size 2.

Well, I mostly see it in periodicals, which are old-style MOBI, so it's definitely not enhanced typesetting at fault. It's easily triggered by going back a couple of pages, then forward again: about 5% of the time, for me, it'll go wrong when you do that. It's clearly a cache invalidation problem somewhere...

odamizu · 04-24-2017, 09:42 PM

All my books are AZW3, so I concur that it's not the enhanced typesetting.

I also agree that it's a caching problem.

knc1 · 04-24-2017, 10:15 PM

Quote:

Originally Posted by odamizu

All my books are AZW3, so I concur that it's not the enhanced typesetting.

I also agree that it's a caching problem.

Go back a few pages, go forward and have part of one of those forward selected pages only show a partial page.

That sounds like the cache slots are organized in the order of a circular buffer, and the direction change causes an off-by-one error in the tracking of what cache slots have been filled.

Now if Amazon would release some program documentation . . . .

= = = = =

So, two slots per displayed page - the odd one is recorded as filled when it has been erased ....

If you go back far enough, so that you have rotated through all cache slots and then go forward, you should not see the blank half page.

"far enough" can probably be found by a binary search (go back 16, 8, 4 or 12, . . . .)

odamizu · 04-25-2017, 02:18 PM

Quote:

Originally Posted by knc1

Go back a few pages, go forward and have part of one of those forward selected pages only show a partial page.

That sounds like the cache slots are organized in the order of a circular buffer, and the direction change causes an off-by-one error in the tracking of what cache slots have been filled.

Now if Amazon would release some program documentation . . . .

= = = = =

So, two slots per displayed page - the odd one is recorded as filled when it has been erased ....

If you go back far enough, so that you have rotated through all cache slots and then go forward, you should not see the blank half page.

"far enough" can probably be found by a binary search (go back 16, 8, 4 or 12, . . . .)

FWIW, when I get the blank half page, going forward one page then back one page will cause the missing text to appear.

Also, when dumping the device logs, this error appears: "framework: 41m[PRE_RENDER] fillUpCache(533): ERROR: NO page cache list or current page is a special page that shouldn't use cache [0m"

knc1 · 04-25-2017, 06:37 PM

Ah, my comment was lacking context again.

I was commenting on the way posted to reproduce the problem.

That is, start out going backward (some number of pages) and then go forward and find one of the pages you backed away from half-missing.

odamizu · 04-26-2017, 12:17 AM

I just had an unpleasant thought: What if the missing-text bug only occurs with old-style mobi and AZW3, and not with KFX. If that's the case, then fixing it is likely to be low priority over at Amazon. (In fact, it's probably already low priority given that it doesn't seem to be a widespread problem — possibly because most people download their books straight from Amazon and receive KFX.)

Has anybody encountered this bug with a KFX book?

NullNix · 04-26-2017, 07:13 AM

Quote:

Originally Posted by odamizu

I just had an unpleasant thought: What if the missing-text bug only occurs with old-style mobi and AZW3, and not with KFX. If that's the case, then fixing it is likely to be low priority over at Amazon. (In fact, it's probably already low priority given that it doesn't seem to be a widespread problem — possibly because most people download their books straight from Amazon and receive KFX.)

If true, this would be proof that Amazon really doesn't care about its periodical-purchase system, because periodicals are, of course, still MOBI (not even AZW3!) even if purchased from Amazon.

I haven't seen this on a KFX myself, but I've read a lot more non-KFX than KFX so far so it could just be chance.

shalym · 04-26-2017, 10:39 AM

Quote:

Originally Posted by NullNix

If true, this would be proof that Amazon really doesn't care about its periodical-purchase system, because periodicals are, of course, still MOBI (not even AZW3!) even if purchased from Amazon.

I haven't seen this on a KFX myself, but I've read a lot more non-KFX than KFX so far so it could just be chance.

I don't read many old style .mobi anymore, but I do read a lot of .azw3 and kfx, and I've never seen it.

Shari

knc1 · 04-26-2017, 11:01 AM

Quote:

Originally Posted by NullNix

If true, this would be proof that Amazon really doesn't care about its periodical-purchase system
- - - - -

Does that mean the end of the coffee table publications?

Or do you just scatter a bunch of micro-sd cards on the coffee table now?

- - - - -

Un-noticed by many, but column fillers are a thing of the past.
Computer driven typesetting killed them off.

nooboo · 04-26-2017, 08:48 PM

I contacted Kindle Support about the missing-text bug.

The results went something like this:

Kindle Support: Did you try restarting your Kindle?

Me: Yes, it didn't help.

Kindle Support: Did you try resetting your Kindle?

Me: Yes, it didn't help.

Kindle Support: Okay, I will escalate this to our technical team.

Next day Kindle Support requests device logs.

I email requested device logs.

A few days later, I receive a follow-up email:

Our technical team has determined this is a hardware problem and it would be best to replace your Kindle.

I am dubious. What are the odds that getting a new Kindle will fix this problem?

jhowell · 04-26-2017, 08:52 PM

Quote:

Originally Posted by nooboo

I am dubious. What are the odds that getting a new Kindle will fix this problem?

Slim to none. It is far less work for them to send you a new kindle than to find the real cause of the problem.

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04-23-2017, 01:35 PM	#31
odamizu just an egg Posts: 1,830 Karma: 8006102 Join Date: Mar 2015 Device: Kindle, iOS	@Isamilis: This issue (missing text that reappears if you go forward a page then back again) persists for me in 5.8.9. So updating to the latest software will not fix the problem.

04-24-2017, 12:38 PM	#33
Atunah Wizard Posts: 1,817 Karma: 23400001 Join Date: May 2012 Location: USA Device: K1/K3/BasicK Voyage/Oasis1/Oasis3	I have had that half page thing once or twice, end of last year maybe? I can't recall. Fall maybe. But I haven't seen it since on any of my devices. I wasn't able to reproduce it then and since its gone for me, I haven't thought about it anymore. Don't think its a wide spread issue. I do know that in my case it was a book that was sideloaded I had converted in calibre. Got from a store I don't normally get books from. Haven't had it with any other side loaded or amazon books. I read mostly my amazon purchases on my kindles. Not sure how they can address something that only happens to some people.

04-24-2017, 01:12 PM	#34
tomsem Grand Sorcerer Posts: 6,942 Karma: 27060153 Join Date: Apr 2009 Location: USA Device: iPhone 15PM, Kindle Scribe, iPad mini 6, PocketBook InkPad Color 3	I'm not seeing 'missing text' issue. Wondering if it involves specific text sizes or fonts? Books with 'enhanced typography' or without? Recently I've been using Bookerly at size 1 or 2. Before that Ember Bold at size 2.

04-24-2017, 09:42 PM	#36
odamizu just an egg Posts: 1,830 Karma: 8006102 Join Date: Mar 2015 Device: Kindle, iOS	All my books are AZW3, so I concur that it's not the enhanced typesetting. I also agree that it's a caching problem.

04-25-2017, 06:37 PM	#39
knc1 Going Viral Posts: 17,212 Karma: 18210809 Join Date: Feb 2012 Location: Central Texas Device: No K1, PW2, KV, KOA	Ah, my comment was lacking context again. I was commenting on the way posted to reproduce the problem. That is, start out going backward (some number of pages) and then go forward and find one of the pages you backed away from half-missing.

04-26-2017, 12:17 AM	#40
odamizu just an egg Posts: 1,830 Karma: 8006102 Join Date: Mar 2015 Device: Kindle, iOS	I just had an unpleasant thought: What if the missing-text bug only occurs with old-style mobi and AZW3, and not with KFX. If that's the case, then fixing it is likely to be low priority over at Amazon. (In fact, it's probably already low priority given that it doesn't seem to be a widespread problem — possibly because most people download their books straight from Amazon and receive KFX.) Has anybody encountered this bug with a KFX book?

04-26-2017, 08:48 PM	#44
nooboo Junior Member Posts: 8 Karma: 10 Join Date: Apr 2017 Device: Kindle	I contacted Kindle Support about the missing-text bug. The results went something like this: Kindle Support: Did you try restarting your Kindle? Me: Yes, it didn't help. Kindle Support: Did you try resetting your Kindle? Me: Yes, it didn't help. Kindle Support: Okay, I will escalate this to our technical team. Next day Kindle Support requests device logs. I email requested device logs. A few days later, I receive a follow-up email: Our technical team has determined this is a hardware problem and it would be best to replace your Kindle. I am dubious. What are the odds that getting a new Kindle will fix this problem?

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