Aura HD 3.11.0 Firmware PDF performance

[arspr]

Originally Posted by Ken Maltby

The install process used is the same process as the process to update the Kobo FW, using a file. No Hacking or moding skills are required.

I am not pushing "mods" on anyone. Certainly not in this thread. I am just pointing out how a Kobo Device, including my AuraHD can do what his AuraHD is currently not doing. In other words a solution to the OP's issue.

Are you equally offended when the true "Hacks"/Mods to the original software,
are discussed? Nightmode? Two Finger Light control?

Luck;
Ken

Ken please, DON'T INSIST. If you want, open a new thread about "Koreader is wonderful versus stock firmware". But here, your insistent comments are FULLY OFF-TOPIC.

We all have learnt that Koreader is wonderful... One post is enough. Two, three or more are just too many.

We just want the stock firmware FIXED, no matter how good Koreader is. And we are just trying to post replicable test cases.

[ottdmk]

Hey arspr, been a little busy lately. I'll give your rebooting PDF a try tonight.

As for a free PDF that has the slow behaviour... haven't found one yet, but also been too busy to look properly. I have some ideas though.

[shalym]

Originally Posted by Ken Maltby

The install process used is the same process as the process to update the Kobo FW, using a file. No Hacking or moding skills are required.

I am not pushing "mods" on anyone. Certainly not in this thread. I am just pointing out how a Kobo Device, including my AuraHD can do what his AuraHD is currently not doing. In other words a solution to the OP's issue.

Are you equally offended when the true "Hacks"/Mods to the original software,
are discussed? Nightmode? Two Finger Light control?

Luck;
Ken

Discussing the mods is fine. Pushing them as the only solution is not, in my opinion. In any case, those mods don't seem to come up as often as the "alternate reader" mods do, and when I have seen them mentioned in the main Kobo forum it was more of a discussion of how well they work or don't work with an update. They may be mentioned more often in the developer's forum, but I don't go there, usually, because I'm just not interested.

Shari

[ottdmk]

Originally Posted by arspr

Hey guys,

Here you have a pdf which doesn't go at a turtlish speed... It just doesn't go at all. Whenever I try to open it, my AuraHD just reboots.

Could you test please?

Canon EOS 7D Mark II AF Guide (6.6 Mb)

No copyrighted document, no DRM document, no nothing... A free available document so I suppose there won't be any Mobileread rules infraction...

Hey arspr I was finally able to give this a try.

I can't open this in Firefox's JS PDF reader or in Okular. It's a password protected PDF. That's probably what's giving the Kobo RMSDK install fits. For the record, I reproduced your reboot.

The search for a good test PDF continues...

[Dr. Drib]

Moderator Notice

Back on topic, please, which is the intent of the OP.

Thank you for your understanding as you respect the wishes of the OP, which is PDF performance with firmware version 3.8.0.

[arspr]

Just re-tested both pdf issues with 3.11.0:
+ Canon EOS 7D pdf: The same crash and reboot.
+ Your grimoire pdf (I've redownloaded it from the dropbox link you PMed me, it is still alive): I think it's even worse, it is so slow, my HD really seems bricked...

[PeterT]

I just downloaded that Canon EOS 7D manual. My browser (Chrome) will open it correctly, however, my PDF reader of choice (Nitro PDF Reader) will NOT open it claiming a password is required.

I *think* this could well be related to why Kobo has a problem viewing this particular file.

[arspr]

Yes, that was also hinted by ottdmk... But in either case it is a clear bug in kobo software...

EDITED:

I've opened ottdmk's pdf and Canon one in Adobe Reader XI and both are password protected for certain areas. I upload two screenshots, they are in Spanish but I suppose you'll easily understand/translate them.

Nevertheless the key differences:

• Canon one requires Acrobat X or later, ottdmk's one just 7.0.
• Canon one uses 256bit AES encription. ottdmk's one uses only 128bit AES encription

If I get across some other conflictive pdf I'll check its protection properties.

[arspr]

Nope, the password protection at least in 7.0 flavour doesn't seem to be the culprit to either problems:

This pdf:
http://www.hec.usace.army.mil/softwa..._Guide_4.0.pdf

which has this protection settings (look at the screenshot), works perfectly fine.

[JSWolf]

Can we now move onto the PDF performance of the 3.11 firmware?

[arspr]

Originally Posted by JSWolf

Can we now move onto the PDF performance of the 3.11 firmware?

This is the same thread... (Look at the 4th post above you). Maybe an administrator should rename its title.

As the problems are exactly the same in 3.8 and in 3.11 (at least, possibly older FWs would be affected too), there's no point in starting a new thread IMO.

[arspr]

Because of davidfor's post in 3.11 FW thread, and my recent HD death and H2O birth, I've retested pdf performance (ottdmk's Dropbox link is alive) and Canon's pdf crash.

Everything continues like always.

More over I've tested Davidfor's soundbar manual but it's nowhere near to the Shadowrun pdf. In davidfor's manual I get about 5-6s at most, while in the ottdmk's pdf I get about 8-9 s at best and sometimes page turn times go up to 20 s.

And again, even that slowness is not really important but the first videos ottdmk posted, where you can see how old FWs were much faster...

[DNSB]

I was looking at the Canon manual and tried the experiment of printing it to a print to PDF file utility. The file that was created had a couple of the restrictions removed and stated it could be opened with any version of Acrobat. Copied the file to my Kobo H2O and it opened happily, page turn times were in the 2 second range. The home page even showed the first page as the cover in contrast to the original which showed a blank page.

[arspr]

Originally Posted by DNSB

I was looking at the Canon manual and tried the experiment of printing it to a print to PDF file utility. The file that was created had a couple of the restrictions removed and stated it could be opened with any version of Acrobat. Copied the file to my Kobo H2O and it opened happily, page turn times were in the 2 second range. The home page even showed the first page as the cover in contrast to the original which showed a blank page.

Yes, that's what I expected. My wild guess about the crash issue is that the culprit is the AES 256bit protection. But in fact I don't know what the hell it is. The pdf is protected against certain features (even with a "password") but at the same time you can freely render it...

I've never been able to understand how this kind of protections CAN work... If I can access the content then I can access the content, how can you prevent me about doing whatever I want with it? And if it is encrypted and I cannot access it, then I cannot access it, so how can I render and display it?

Nevertheless, it would be great if someone with full fledged Acrobat could generate a sample pdf enabling this feature...

[DNSB]

Originally Posted by arspr

Yes, that's what I expected. My wild guess about the crash issue is that the culprit is the AES 256bit protection. But in fact I don't know what the hell it is. The pdf is protected against certain features (even with a "password") but at the same time you can freely render it...

I've never been able to understand how this kind of protections CAN work... If I can access the content then I can access the content, how can you prevent me about doing whatever I want with it? And if it is encrypted and I cannot access it, then I cannot access it, so how can I render and display it?

Nevertheless, it would be great if someone with full fledged Acrobat could generate a sample pdf enabling this feature...

I don't think it has to do with the AES protection. I used Acrobat XI to generate a PDF openable with Acrobat 3 or higher and it worked. Used the same input file and set the output for Acrobat Level 8/PDF 1.7 (Acrobat X or higher) and it rebooted my Kobo. The stack error log looked the same as the one from opening the original Canon manual.

As for the value of the restriction flags, there aren't that many bits of software that can be used to edit PDF files so most people are using Adobe's Acrobat which does respect the restrictions.

At work, we do generate quite a few PDF's that are flagged as not printable by Adobe's or compatible software and others that allow form filling.

A PDF file can have two passwords set, one is the owner password which is used to enable/disable restrictions, the other is an user password which is needed to open the file for any purpose. Then you can get into the PDF compatibility settings in Acrobat -- I tend to prefer Acrobat 6 (PDF 1.5) just to make the file readable on as many systems as possible while keeping some advanced features.