Kobo Bug thread - Page 43

mathil · 06-13-2015, 07:15 PM

Noticed a typo with 3.16.0 (mark 4 sideloaded on my H2O) in the Italian translation today. When the popup with the WIFI networks opens, the writing next to the toggle is "WiFi: abilitado" (if enabled) and "WiFi: disabilitado" (if disabled). Instead, it should be "WiFi: abilitato" and "WiFi: disabilitato".

freekobo · 06-13-2015, 07:24 PM

delete

davidfor · 06-14-2015, 01:51 AM

Quote:

Originally Posted by panickros

I am not familiar with calibre, so I just thought it just reduces the size of JPEG when converting CBZ to KEPUB. (It actually converts images to PNG)

Anyway, I tested very same cbz file with comic processing off, and it works like a charm.

I hope KOBO solves this bug as soon as possible.

Apparently it is a bug in Qt. It should be fixed in the next firmware release.

davidfor · 06-14-2015, 02:26 AM

Quote:

Originally Posted by freekobo

PDF performance is very slow to open files, and to change pages.
Product:Kobo Aura (nonHD)
Firmware:3.15.0
File types:PDF
Sideloaded or from Kobobooks:Kobobooks or Sideloaded

So, how do you get a PDF downloaded from Kobobooks directly to the device?

Quote:

On external SD:No
Steps to reproduce:

Tap a PDF to open (50 to 100MB), and wait, and wait, and wait....
zoom in out, scroll around & turn pages

Current result: Very,very,slow opening, turning pages, and zooming
Workaround: Install Firmware 3.2.0 or lower.

I'm sorry, but "and wait, and wait, and wait...." is not a bug report. That just says you thought it took to long. It might just be that you are less patient than other users. If this is a reproducible problem, time it and report that. That helps the rest of us work out whether we see it or not.

As a test, I tried a 136MB PDF on my Glo running 3.16.0 and my son's Glo running 3.15.0. On both, opening the PDF takes less than 5 seconds. There is some variation depending on the page the book is being opened to. It is pictures and a description on alternating pages. Opening to the description page is noticeably quicker than the picture. The same goes for page turns. It's not fast, but it isn't interminably slow.

The next size down I have is 21MB. This is graphics heavy manual for my TV. Again, it isn't fast, but, nothing is taking three seconds on either firmware.

From here, there doesn't seem to be an issue. Yes, bigger PDFs take more time than smaller, but, that is to be expected. So, maybe it is something different in the books we are testing. Higher resolution images would be an obvious cause, but DRM might have an affect, or complicated text layout. Is there anything different about your books?

compurandom · 06-14-2015, 07:18 AM

The PDF with the faded smear is at https://www.sans.org/reading-room/wh...language-35937 which is all but unreadable on the kobo.

Looking at it again, there may be no easy fix for this, and my test images dithered nicely on the kobo screen, and looked even better after calibre processed them with default settings.

Maida · 06-14-2015, 08:54 AM

I cannot understand why so many people are eager to read PDFs on eink devices, since PDFs have a completely different definition and purpose.
Even a cheap chinese tablet can do better and it won't cost more than an eink reader.

freekobo · 06-14-2015, 09:57 AM

Quote:

Originally Posted by davidfor

So, how do you get a PDF downloaded from Kobobooks directly to the device?

I'm sorry, but "and wait, and wait, and wait...." is not a bug report. That just says you thought it took to long. It might just be that you are less patient than other users. If this is a reproducible problem, time it and report that. That helps the rest of us work out whether we see it or not.

As a test, I tried a 136MB PDF on my Glo running 3.16.0 and my son's Glo running 3.15.0. On both, opening the PDF takes less than 5 seconds. There is some variation depending on the page the book is being opened to. It is pictures and a description on alternating pages. Opening to the description page is noticeably quicker than the picture. The same goes for page turns. It's not fast, but it isn't interminably slow.

The next size down I have is 21MB. This is graphics heavy manual for my TV. Again, it isn't fast, but, nothing is taking three seconds on either firmware.

From here, there doesn't seem to be an issue. Yes, bigger PDFs take more time than smaller, but, that is to be expected. So, maybe it is something different in the books we are testing. Higher resolution images would be an obvious cause, but DRM might have an affect, or complicated text layout. Is there anything different about your books?

Hi davidfor It must me just me then. I will delete it, sorry to waste your time.

PeterT · 06-14-2015, 04:32 PM

It's a shame that you decided to take umbrage at David's reply and drop your message. All he was doing was describing his experience just as you described yours.

freekobo · 06-14-2015, 06:23 PM

Quote:

Originally Posted by PeterT

It's a shame that you decided to take umbrage at David's reply and drop your message. All he was doing was describing his experience just as you described yours.

I know that. I wasn't mad or anything I just felt like I was reporting a problem that no one else was having..so it must be just the large pdfs (PC Gamer) I was trying..its really not that important to me, I kinda posted it out of boredom to see if anyone else was having the problem. As Maida pointed out, PDF on eink isn't that great so I deleted it and moved on.

compurandom · 06-15-2015, 07:14 AM

> I cannot understand why so many people are eager to read PDFs on eink devices

That's silly. Try "I cannot understand why so many people distribute documents as PDFs instead of text files or epubs". FTFY, HTH.

> Even a cheap chinese tablet can do better and it won't cost more than an eink reader.

I have a cheap chinese tablet, and I do read pdfs on it. But not outside, or for more than a few hours without charging. If I want to read pdfs outside, or read them for 20 hours without charging, I use my kobo. Or sometimes I just don't want to carry two devices, or hold up double the weight of the kobo in a single device.

I do not understand why people with no imagination criticize what others do. :-P

ottdmk · 06-15-2015, 10:10 AM

freekobo, you're not the only one to notice poor pdf performance post version 3.2. Here's my best post from the thread I started to discuss it. If you would care to download the pdf tested and confirm my findings, that would be one more voice on the issue.

freekobo · 06-15-2015, 02:41 PM

I can confirm your findings with your example PDF. That's exactly what's happening to me too. It also happens using this pc gamer magazine PDF. Pinch zoom is slow and sometimes my screen goes all black or blank. Using 3.16.0 now, same thing. Its weird that performance is much better on 3.2.0 with the same PDFs.

jordanasky · 06-25-2015, 12:45 AM

Quote:

Originally Posted by Lucas Malor

How to reset the sqlite database:

1. Connect your Kobo reader to your computer or any other device
2. open the .kobo folder.
3. copy KoboReader.sqlite (the database) to you hard disk
4. unmount and disconnect the device
5. Go to the reader settings -> Account
6. sign out
7. restart
8. sign in again

If nothing changes, restore the backup.

If you know how to do, you can try to dump the db and import it in a new db (backup it before anyway)

HI,
This is my 2nd kobo. my first was stolen at school. I have a touch ereader now but can't get any files to be "seen" on my device. the calibre device shows I have them on the device, I can see them on explorer (windows 7) but can't see any books when I unplug from the pc.
Additionally, I followed the above steps and get stuck when after hitting copy for the file, I can't paste the file to my desktop.
this is a new device and the only thing I can see on it is the free book my dad helped me d/l
Jordana

davidfor · 06-25-2015, 01:54 AM

Quote:

Originally Posted by jordanasky

HI,
This is my 2nd kobo. my first was stolen at school. I have a touch ereader now but can't get any files to be "seen" on my device. the calibre device shows I have them on the device, I can see them on explorer (windows 7) but can't see any books when I unplug from the pc.
Additionally, I followed the above steps and get stuck when after hitting copy for the file, I can't paste the file to my desktop.
this is a new device and the only thing I can see on it is the free book my dad helped me d/l

The copy of the database to the PC should work. When something like that doesn't work, it usually means either there isn't any space, or you don't have permission to write to the destination. If either of these were the cause, it would mean you have bigger problems with your PC than the ereader. If you are copying to the Windows desktop, that isn't a good idea. It is better to put data files somewhere else. The documents folder or another folder would be best.

Having said that, as this is a new device, I wouldn't worry about backing up the database first. The symptoms suggest the database is corrupt. That will prevent new books added to the device from being loaded. The simplest fix is to do a sign out on the device. The device will remove the database, restart and prompt you to set up again. It should then load the books.

If that doesn't work, do a factory reset. The option for this is on the "Device information" page of the settings. That will wipe the device completely, reinstall the factory firmware and then take you through the setup again. This fixes just about any problem, but it does mean you have to load the books again.

johnnyb · 06-25-2015, 07:27 AM

I think this thread is an embarassment for Kobo!

06-13-2015, 07:24 PM	#632
freekobo Addict Posts: 250 Karma: 2731310 Join Date: Jan 2013 Device: Kobo Aura	delete Last edited by freekobo; 06-14-2015 at 09:58 AM.

06-15-2015, 07:14 AM	#640
compurandom Wizard Posts: 1,013 Karma: 500000 Join Date: Jun 2015 Device: Rocketbook, kobo aura h2o, kobo forma, kobo libra color	> I cannot understand why so many people are eager to read PDFs on eink devices That's silly. Try "I cannot understand why so many people distribute documents as PDFs instead of text files or epubs". FTFY, HTH. > Even a cheap chinese tablet can do better and it won't cost more than an eink reader. I have a cheap chinese tablet, and I do read pdfs on it. But not outside, or for more than a few hours without charging. If I want to read pdfs outside, or read them for 20 hours without charging, I use my kobo. Or sometimes I just don't want to carry two devices, or hold up double the weight of the kobo in a single device. I do not understand why people with no imagination criticize what others do. :-P Last edited by compurandom; 06-15-2015 at 07:16 AM.

06-15-2015, 02:41 PM	#642
freekobo Addict Posts: 250 Karma: 2731310 Join Date: Jan 2013 Device: Kobo Aura	I can confirm your findings with your example PDF. That's exactly what's happening to me too. It also happens using this pc gamer magazine PDF. Pinch zoom is slow and sometimes my screen goes all black or blank. Using 3.16.0 now, same thing. Its weird that performance is much better on 3.2.0 with the same PDFs. Last edited by freekobo; 06-15-2015 at 08:10 PM.

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06-13-2015, 07:15 PM	#631
mathil Evangelist Posts: 445 Karma: 287725 Join Date: Sep 2014 Location: Europe Device: Kobo Aura H2O/Glo HD/Libra 2, Kindle PW3/PW5/PW11, Boox Palma	Noticed a typo with 3.16.0 (mark 4 sideloaded on my H2O) in the Italian translation today. When the popup with the WIFI networks opens, the writing next to the toggle is "WiFi: abilitado" (if enabled) and "WiFi: disabilitado" (if disabled). Instead, it should be "WiFi: abilitato" and "WiFi: disabilitato".

06-14-2015, 07:18 AM	#635
compurandom Wizard Posts: 1,013 Karma: 500000 Join Date: Jun 2015 Device: Rocketbook, kobo aura h2o, kobo forma, kobo libra color	The PDF with the faded smear is at https://www.sans.org/reading-room/wh...language-35937 which is all but unreadable on the kobo. Looking at it again, there may be no easy fix for this, and my test images dithered nicely on the kobo screen, and looked even better after calibre processed them with default settings.

06-14-2015, 08:54 AM	#636
Maida Enthusiast Posts: 45 Karma: 10 Join Date: Apr 2010 Location: Germany Device: Kobo Aura H2O, Kobo Aura, Kobo Glo HD	I cannot understand why so many people are eager to read PDFs on eink devices, since PDFs have a completely different definition and purpose. Even a cheap chinese tablet can do better and it won't cost more than an eink reader.

06-14-2015, 04:32 PM	#638
PeterT Grand Sorcerer Posts: 13,538 Karma: 78910202 Join Date: Nov 2007 Location: Toronto Device: Libra H2O, Libra Colour	It's a shame that you decided to take umbrage at David's reply and drop your message. All he was doing was describing his experience just as you described yours.

06-15-2015, 10:10 AM	#641
ottdmk Wizard Posts: 1,220 Karma: 3804496 Join Date: Feb 2012 Location: Ottawa, Ontario, Canada Device: Kobo Libra 2, Lenovo Tab M10 FHD Plus, Lenovo Tab M9	freekobo, you're not the only one to notice poor pdf performance post version 3.2. Here's my best post from the thread I started to discuss it. If you would care to download the pdf tested and confirm my findings, that would be one more voice on the issue.

06-25-2015, 07:27 AM	#645
johnnyb Cloud Reader Posts: 1,124 Karma: 4000066 Join Date: Aug 2010 Device: Kindle Oasis, Kindle Scribe, iPad Pro 11	I think this thread is an embarassment for Kobo!

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