A very strange problem

Spinnenmonat · 04-24-2019, 07:39 AM

Hi, my dear friends, I need your help. A curious and weird problem took place in my Kobo Aura One. I bought it two year ago and it has been working very fine for me. Yesterday I got an E-Book and loaded it to my device. To be honest, the E-Book was not bought but downloaded from a suspicious website, its layout of the book itself is also poorly set. In one word, this E-Book is not a “clean” one like those we get from Kobo shop or from our Mobileread library. After the book has taken a place in my device, the strange thing happened. The Battery drops quickly in an obviously abnormal rate. After charging the battery full again, in one hour, it drops to 80% in sleep mode, totally without working. I have not yet removed this suspicious book from my device for I am not sure whether it is responsible for what happened to my Kobo reader. So I need to ask whether anyone of you have experienced something similar?

davidfor · 04-24-2019, 08:16 AM

Yes, it is possible for very badly formatted books to cause high power usage. The worse the code in a book, the more CPU is needed to process it when reading and that will use more battery.

Spinnenmonat · 04-24-2019, 08:25 AM

Quote:

Originally Posted by davidfor

Yes, it is possible for very badly formatted books to cause high power usage. The worse the code in a book, the more CPU is needed to process it when reading and that will use more battery.

Thank you davidfor. I deleted the book and restarted my device. I hope it will be good again.

compurandom · 04-24-2019, 10:44 PM

Occasionally when I turn webpages into epubs I get a bad book like that. Typically some careful editing will help... Like use the modify epub plugin to remove all javascript for a start.

Sometimes I have to do other things that involve essentially simplifying the html and stripping out useless garbage.

Readirect · 04-25-2019, 06:48 AM

FWIW, Calibre will automatically fix poorly-formatted ebooks. There's almost certainly nothing "malicious" in your download, btw.

04-24-2019, 07:39 AM	#1
Spinnenmonat Guru Posts: 606 Karma: 2058508 Join Date: Jun 2012 Location: Wien Device: Sony Reader PRS-650 Kindle Voyage 3G	A very strange problem Hi, my dear friends, I need your help. A curious and weird problem took place in my Kobo Aura One. I bought it two year ago and it has been working very fine for me. Yesterday I got an E-Book and loaded it to my device. To be honest, the E-Book was not bought but downloaded from a suspicious website, its layout of the book itself is also poorly set. In one word, this E-Book is not a “clean” one like those we get from Kobo shop or from our Mobileread library. After the book has taken a place in my device, the strange thing happened. The Battery drops quickly in an obviously abnormal rate. After charging the battery full again, in one hour, it drops to 80% in sleep mode, totally without working. I have not yet removed this suspicious book from my device for I am not sure whether it is responsible for what happened to my Kobo reader. So I need to ask whether anyone of you have experienced something similar?

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04-24-2019, 08:16 AM	#2
davidfor Grand Sorcerer Posts: 24,905 Karma: 47303824 Join Date: Jul 2011 Location: Sydney, Australia Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos	Yes, it is possible for very badly formatted books to cause high power usage. The worse the code in a book, the more CPU is needed to process it when reading and that will use more battery.

04-24-2019, 10:44 PM	#4
compurandom Wizard Posts: 1,012 Karma: 500000 Join Date: Jun 2015 Device: Rocketbook, kobo aura h2o, kobo forma, kobo libra color	Occasionally when I turn webpages into epubs I get a bad book like that. Typically some careful editing will help... Like use the modify epub plugin to remove all javascript for a start. Sometimes I have to do other things that involve essentially simplifying the html and stripping out useless garbage.

04-25-2019, 06:48 AM	#5
Readirect Zealot Posts: 134 Karma: 20456 Join Date: Apr 2014 Device: KPW1	FWIW, Calibre will automatically fix poorly-formatted ebooks. There's almost certainly nothing "malicious" in your download, btw.