yashsingh1/xdaforums huggingface dataset:
[Android Software/Hacking General [Developers Only]] ID000001:
New rom has not crashed my tablet at all. No wireless issue so far neither. Battery has almost no drain on idle. Very solid! Good work!

I also have logcat turn on and will try and help analysis the log if anything come up.
[Android Software/Hacking General [Developers Only]] Chatbox:
Three days without a lockup. I'm good with this as a daily driver.
[Android Software/Hacking General [Developers Only]] Teleferic:
Well, there is still a possibility of it locking up. It would seem that it happens briefly before the wifi connects, disconnects, or reconnects.

I'm currently considering adding a delay to this connection process as a workaround until I see what's really happening there.

I thought some guesses I had at this bug might have fixed the problem but some users still report problems.
[Android Software/Hacking General [Developers Only]] cobyman7035:
Is it normal for the 10in kobo arc 10hd to take 5hrs or more to fully charge?
[Android Software/Hacking General [Developers Only]] 10Tab:
Few more days and it locked up only once during use. It feels a lot more stable than before where I was expecting it to lock up more.

I formatted internal storage and duplicate files did not go away. I think it was fixed for a minute then this morning I see all files as duplicates again.
[Android Software/Hacking General [Developers Only]] Chatbox:
I've setup Tasker to toggle my wifi every 30 seconds, and also logging to the internal SD card in the background. Will send you the logs if it crashes.
[Android Software/Hacking General [Developers Only]] GenghisKhan67:
The new ROM works great. My only real gripe at this point is the Market apps compatibility issue. Using Market Helper is awkward at best, I wish my Kobo emulated a standard Nexus 7 or 10, which would make it easier for me to give it to a friend. Any chance of this change making it to a new build? Thanks again for all your work, much, much appreciated!
[Android Software/Hacking General [Developers Only]] 10Tab:
2 weeks report

Great!

Lockup: It's great now. It locked up once during use, and another after boot but neither of them are anything but rare occurrence.

Could be improved

Wakeup-Charging: It's there. It ties into app compatibility other person mentioned because once you reboot, you have to run market helper and wait a while for it to work.

Battery drain: I have not seen it on new ROM. Before flagging it as solved, I'd like to hear from others.

Duplicate media: it's there but it's not a showstopper. 3rd party apps such as MX player isn't affected.

Final words

Now I trust this tablet enough to wake up after a long standby. Lockup is virtually gone and I'm going through 15%-20% battery a day, with appropriate charge left when waking up. When charging I watch it to see if it needs a reboot.

I have deleted factory ROM backup as I don't see going back to it ever. With August 1, 2016 security patch we are miles ahead of where we could been with manufacturer updates.
[Android Software/Hacking General [Developers Only]] Gruntje:
Finally had time to install it and its definitely an improvement! Thanks again for the great work.

Few observations:

- General usage (opening apps etc.) is absolutely faster than in 4.2.2.

- Animations however seems to be less smooth. Swiping through homescreens/scrolling through browser is a bit sluggish. Not really an issue, but because of this it feels less smooth than 4.2.2.

- Battery is (after one cycle) already on 59% with only 1 hour and 10 minutes Screen On Time. This used to be 6+ hours. But maybe this will be better after a few cycles.

- Idle drain doesn't seem to be an issue.

Note: These are just observations so far, no complaints. Perhaps it's too soon after just 2 days of use, but I'd like to hear if other people are experiencing the same.

Will update this once in a while.

Installed: CM 12.1.1 (27082016) with opengapps nano (15092016) and supersu 2.78 (05092016)
[Android Software/Hacking General [Developers Only]] Goldenmeadow:
Hi everyone!

I just installed TWRP, flashed CM 12.1.1 (27082016) with opengapps nano (15092016) and I have big issue:

My screen flashes in a weird way, like diagonally, like kaleidoscope... Anyone experienced it? How to fix it?

Thanks !!!!!

---------- Post added at 08:33 PM ---------- Previous post was at 07:59 PM ----------

Hi Teleferic!

I have an issue with the ROM... (Please see post above).

Any ideas how can I fix my tablet?

Thanks!
[Android Software/Hacking General [Developers Only]] Teleferic:
Could be screen tearing. Got a picture?

I've been looking at increasing the smoothness. When the next build comes out it might be smoother. Most likely the original rom has some nvidia related optimizations or something. Getting ready to strip that rom down completely.

I'm still watching this lockup very closely, and hope to have it completely fixed in the next build.

The wake-up charging is definitely there, saw that a few times. It might be a kernel config thing.

There is also a chance that during charging when the internal memory card suspends (yes, lol) sometimes it will not wake back up and the system crashes.

And. . . . .also the camera, it's kinda not working right in some apps.
[Android Software/Hacking General [Developers Only]] Goldenmeadow:
Thanks for reply! Unfortunately I didn't make a picture.

But I wiped everything (after first install TWRP kept giving some partition error every time I tried to wipe cache).

Then reinstalled just ROM - no issues. Then installed R4 kernel - no issues.

The only issue now is Gapps. I flashed them from TWRP couple times but they DON'T SHOW UP! Not a big deal - got Market Helper and installed manually off Market. Just weird :)

Thanks for all hard work!!!!!
[Android Software/Hacking General [Developers Only]] 10Tab:
I had this exact same problem out of nowhere, and only on one particular day this past weekend (Saturday?).

First, tablet locked up (first in a long time), so I proceeded to hard power off. When CM logo came up during boot, half of logo was flickering diagonally and tablet frozen. I thought my hardware was pooped. I gave another reboot and background came up, only seconds later entire background starts doing same diagonal flashing. Tablet still unusable no input was working.

I booted couple more times and was able to get back sort of working, but it had lost Wifi profile again. I entered it then at some point this diagonal screen thing comes back. I gave up and left tablet as is at that point. Next day, tablet seems fine now.. Very odd.

Was it Saturday that happened to you? I wonder if setting time manually to that date will duplicate it? And whatever that has to do with; it is really odd. I never seen that happen before and even after multiple reboots it kept happening.

It was like this, but only top right corner diagonally if you were to draw a line across screen.
[Android Software/Hacking General [Developers Only]] Gruntje:
Just had a lockup since 18-09. I have been recording all logs via Catlog since that day.

I assume there is usefull data in this logfile for you Teleferic? I'm quite new to these android logfiles so I'm not sure if it's safe to just post these here. And also if you want all of it (from 18-09 to 20-09)

Let me know if I can be of any help with these logfiles.
[Android Software/Hacking General [Developers Only]] Teleferic:
That's really strange, if you ever can get a picture I'd like to see.

Edit: Oh wow, that's definitely not screen tearing. My first guess would be that it looks like a problem with the screen itself.

---------- Post added at 11:41 PM ---------- Previous post was at 11:38 PM ----------

If it isn't too big you can attach it to one of your posts, and I'll check it out.
[Android Software/Hacking General [Developers Only]] Gruntje:
I narrowed it down to about 15 minutes before and until lockup.

Hope it helps.
[Android Software/Hacking General [Developers Only]] 10Tab:
That's just some random picture I found online that is closest to what I've seen. So that's what I thought - it was the screen hardware gone/going - but I shook it vigorously and everything and it didn't affect in any way.

I never had trouble getting tablet to work after 1 reboot and this day was super strange.

I didn't share it earlier because I didn't want to cause undue alarm if it was my device failing. My device mostly sits in room and don't go anywhere. However when I read the "diagonal" message I exactly knew it was same as what happened to mine on that day. Now I don't doubt Goldenmeadow's story because I've seen it happen on mine and as fast as it happened, it's compltely gone now.
[Android Software/Hacking General [Developers Only]] Goldenmeadow:
Yes, that was Saturday... I had that diagonal effect even during boot on little andorid's animation... But then next day I installed CM. But my gApps are still missing even though TWRP reported successful installation...

Sorry I didn't take picture because I assumed something was wrong on my end... But that flickering was of left bottom triangle if you draw the line from left top to right bottom corner...

Do you have any suggestuion about gApps? I installed zip in TWRP, saw progress messages, TWRP reported success... But when I boot up I see nothing, no GMail, nothing...

Thanks!
[Android Software/Hacking General [Developers Only]] Gruntje:
In my time flashing roms and gapps I've noticed that gapps packages can get corrupt very easily. Have you tried redownloading and installing different versions of gapps? Like micro, nano or pico.

I've been using opengapps nano (15092016) without any issues.
[Android Software/Hacking General [Developers Only]] 10Tab:
I got this on video.

It appears tablet has trouble finishing boot. Because when I slide power button, screen goes into sleep and wakes up however it rapidly shows CM logo and blank background. On Saturday it was showing tearing background as well.

After the second part of video, I left it for good 5 minutes and it didn't change, so I don't think giving more time will work.

It took 4 off-on sequence to make tablet work again. This was exact same # on Saturday as well (if this means anything)

https://vid.me/ytK6
[Android Software/Hacking General [Developers Only]] Teleferic:
That is really strange indeed and nothing much has changed in terms of booting between 12.1 and 12.1.1.

The only thing to suggest for now, if it happens again, is to backup your current rom and try a clean flash to see if there is any difference.

To be on the safe side, i'm also currently uploading the original os (ota) zip download for anyone who may need it.

This rom looks like it's very buggy when in the wild.
[Android Software/Hacking General [Developers Only]] 10Tab:
I dirty flashed latest opengapps today and will observe. Good news is, even though it takes 4 reboots, tablet eventually works fine again. Both on Saturday and today, it happened after device locked up and it had quite a bit of uptime when it did lockup. I didn't lose wifi profile today , which I expected to happen.
[Android Software/Hacking General [Developers Only]] Teleferic:
Hey everyone, I've posted a new kernel revision in the downloads. Can any of you test to see if you get lockups in this kernel?

Kobo Arc 10HD Test Kernels

The latest kernel is r5 in that folder.

------------------------------------------------------------------------------

Kobo Arc 10HD Wiki

Kobo Arc 10HD 12.1.1 Device Tree

Kobo Arc 10HD CM Kernel

Kobo Arc 10HD CM 12.1.1 Boot Ramdisk

Kobo Arc 10HD TWRP Recovery Ramdisk
[Android Software/Hacking General [Developers Only]] ID000001:
Thanks, I flashed it just now and will report in. Just flash that onto the latest CM12.1.1 rom. Thought if I have any problem I will probably restore and try it again. Thanks a bunch for your help! Been eagerly hoping for improvement on the stability of this tablet! I still like it a lot and has a few other friends who has one.

Edit: Try refresh or use a different browser if you can't see r5 kernal, it is definitely uploaded there.

---------- Post added at 06:55 AM ---------- Previous post was at 06:27 AM ----------

Also, does anyone have another copy of the OTA "stock" rom or check sum for it? I tried the one on the same page the Test Kernels but it fails to work for some odd reason.
[Android Software/Hacking General [Developers Only]] Teleferic:
Ah, just took a look at the update script, and it definitely won't work because it runs a few device and rom checks before flashing. I'll change this when I have time.
[Android Software/Hacking General [Developers Only]] ID000001:
Oh. Thank you!

Also, the new kernal definitely work better on stability. The old one will feel "laggy" in just a couple hour of browsing and has to be rebooted to smooth thing up. This one so far doesn't show that issue.

Though this one is signifincantly more choppy on video playback. Simply play youtube will shows that it skip frames very often. (every few seconds) even on a flash reboot.
[Android Software/Hacking General [Developers Only]] Teleferic:
Thanks for the feedback. Run that new kernel for a while and report back if it locks up/freezes. Hopefully it's fixed, because I'm starting to run out of ways to debug.

Getting a good configuration on the cpu for all around usage is tricky. If you want little to no lag in videos, download kernel adiutor and turn cpuquiet off, and turn all your cpu's on.
[Android Software/Hacking General [Developers Only]] ID000001:
Thanks for the tips. I have been using this kernel excessively for browsing and streaming video all day so far. Definitely feels significantly more stable.
[Android Software/Hacking General [Developers Only]] Gruntje:
Nice! Thanks. So just flash zip through twrp? No wiping dalvik or anything?
[Android Software/Hacking General [Developers Only]] hipocrazy:
Yep, just flash. Kernel feels stable, no lockups so far.
[Android Software/Hacking General [Developers Only]] Chatbox:
Kernel r5, today is the 3rd day since I flashed it....and there was a complete lock up while the tablet was not in use. I was not able to wake it up. Had to long-hold the power button for a restart.
[Android Software/Hacking General [Developers Only]] hipocrazy:
Yep, I spoke too soon. Had a lock up upon boot last night.
[Android Software/Hacking General [Developers Only]] 10Tab:
Suffering almost daily from graphic crash. Tablet responds to power input, but navigation bar flashes and main screen freezes.

I don't think it's this kernel related, its something from before.

Still mostly usable.
[Android Software/Hacking General [Developers Only]] ID000001:
I would say it is more than usable. It is a significant improvement from before.

At least the tablet doesn't slow down overtime. I can just schedule a nightly reboot and it is largely stable on regular daily use with snappy respond.

Overall very happy.
[Android Software/Hacking General [Developers Only]] 10Tab:
Is there an easy way to schedule nightly reboot and market helper after that? That would be nice
[Android Software/Hacking General [Developers Only]] 10Tab:
Just got new USB charging analyzer and wanted to share

This tablet charges at full rate right up to 100%. This is quite different from other devices; even at 100% it is still drawing 0.9A.

So do charge right up to 100% then disconnect. No need to disconnect early if you are aiming for battery longevity.
[Android Software/Hacking General [Developers Only]] Teleferic:
Thanks for the info guys.

Next week I'll be uploading another kernel that emergency powers off the device when it locks up (the kernel doesn't seem to know how to reboot, and shuts the device down instead), that way you don't have to keep hard resetting on every lockup.

This might be useful if I find out how to make the device reboot directly on a lockup, because the logs are automatically written and saved in memory on every reboot. (I only know how to make the device auto reboot when charging).

There are at least 3 freezes caused by different errors, it might take a while to find and fix them all, and here I thought porting a tablet to 5.1.1 would be easier than a phone.

:confused:
[Android Software/Hacking General [Developers Only]] 10Tab:
If anyone wants this tablet in Canada, Liquidation Mania has it for $103+tax shipped.
[Android Software/Hacking General [Developers Only]] 10Tab:
Tablet had been sitting idle for few days and when I picked it up, graphics crashed immediately. I couldn't get back into OS due to graphics keep crashing during boot. After about 10 attempts, I cleared dalvik/art + cache and magically I am back in.

If this indeed works then it is good enough for us at least. I wouldn't try to explain it to normal user but at least those who know will be able to get back into work.

I have a very few apps on it and they are all very common apps, nothing out of ordinary.
[Android Software/Hacking General [Developers Only]] madman604:
original Arc question: has a root been found for the sytem update yet?

I'm still on 4.1.1 Jellybean
[Android Software/Hacking General [Developers Only]] funkdoobi:
any update coming to allow installing apps from play store isntead of sideloading? :D
[Android Software/Hacking General [Developers Only]] Teleferic:
Kernel Update

Hey everyone, I almost forgot about this tablet. There is a new kernel upload (revision 6) that you all can flash for the Kobo Arc 10HD.

Kobo Arc 10HD Test Kernels

What does this new one do?

Remember to backup in case something goes wrong.

I've been thinking about this, but I'd rather not change the device name. You can actually enable this yourself by changing the device name to something else. This can be done from the file;

/system/build.prop

Change the following inside this file to a device you think is very compatible.

ro.product.model=
ro.product.manufacturer=

Note that this doesn't always work because you'd have to first re-register the device on google play and even then google has all types of ways to fingerprint the device, so it is not guaranteed.

USEFUL LINKS

Revision: cm-12.1-20160704-UNOFFICIAL-macallan

Revision: cm-12.1-20160624-UNOFFICIAL-macallan

Flashing Recovery (dazza9075)

Github Links

Old installation guide (still applies for recovery installation)
[Android Software/Hacking General [Developers Only]] ID000001:
Thanks again for the amazing work. This one definitely seems to be doing the trick so far. Everything looks smooth and stays very solid and stable on 12.1.1.

Really can't ask for more for this tablet and you some how managed to keep it relevant in 2017. Great work!
[Android Software/Hacking General [Developers Only]] Erkdajerk:
I was waiting for an update since I was having power depletion and wifi disconnection issues with the previous kernel. I understand you're doing this on a pro bono basis so thanks for coming through,Teleferic.

So far, so good with the new kernel.
[Android Software/Hacking General [Developers Only]] Chatbox:
Just reporting: I've been on the R6 kernel for 2 days now. So far so good, no hang/crash. Wifi seems to be consuming a lot of power though (5GHz band), just like previous kernel revisions (i.e. no change here). Stability does seem to have improved.

By the way, I'm not seeing the commits that makes up R6 kernel. Can you include those commits in GitHub?
[Android Software/Hacking General [Developers Only]] Teleferic:
Thanks, I've posted the relevant commits for the latest changes on github.
[Android Software/Hacking General [Developers Only]] ID000001:
After a week, absolutely no freezing or slow down or any other stability issue at all. Kudos. Impressive work!
[Android Software/Hacking General [Developers Only]] madmalkav:
Any suggestion of what to use for this? Seems like Asus Transformer TF701T is almost the same hardware.
[Android Software/Hacking General [Developers Only]] Chatbox:
Almost a week with the R6 kernel. No stability issue / hang. Awesome.

---------- Post added at 09:02 PM ---------- Previous post was at 08:46 PM ----------

I've been running the PassMark PerofrmanceTest Mobile app on this arc 10HD (with the R6 kernel). All the scores look good compare to the device's online average: http://www.androidbenchmark.net/phone.php?phone=Kobo+arc+10HD

...except for the memory test (3272 vs 3419) and the 3D graphics (1076 vs 1679).

My device scored:

CPU: 24307

Disk: 19207

Memory: 3272

2D: 3749

3D: 1076

Can we look into what's happening to the 3D score / kernel tuning?

In the order of stability first, then performance, then additional features / mods, I think most (if not all) of us are happy with the stability. Performance is to be tackled next, right?

Then, at some point, we can also start looking into security updates for 5.1.1. It would be really awesome if we have a solid, fast and secure 5.1.1 for this arc 10HD by the end of the year.

I, for one, feel so lucky that we have Teleferic working on this device. :)
[Android Software/Hacking General [Developers Only]] Teleferic:
Thanks for the feedback everyone, it looks like that kernel r6 fixed the stability issues, sweet. I'll be back a bit later with some new developments, probably later in this month. The 3D does have a few issues, as well as the camera. I also gotta start updating the wiki at some point too, so I don't forget what I was doing.
[Android Software/Hacking General [Developers Only]] sunnyd71:
Seems much more stable now. Thanks for this. Are we likely in the future to see more recent versions of CM with ICS or Nougat or have you hit a wall to what can be done with the hardware?
[Android Software/Hacking General [Developers Only]] Gruntje:
Stability seems to be much better indeed. Good work.

But as [MENTION=6564491]ID000001[/MENTION] stated a while ago, the video playback is still very choppy. It's very annoying since it's what I use the tablet for the most.

Any ideas? Thanks.

Edit: Removed a line of text.

&

I've installed CPU Tuner and loaded the "Regular" program. After that i'm no longer experiencing choppy video's. I believe CPU tuner keeps more cores (longer) active than normal which increases performance.

Before I figured this out, I also installed Kernel Adiutor and loaded the "Performance" governor. This also fixed the problem (but used more battery).

Maybe this helps.
[Android Software/Hacking General [Developers Only]] Chatbox:
With the R6 kernel, I'm getting the following scores in Geekbench 4:

Single-core Score: 878

Multi-Core Score: 2123

Very decent numbers.

In GFXBench GL, it's revealling that there's "Driver Overhead" in R6 when compared to the online reference score of Kobo Arc 10HD. In the Driver Overhead test, R6 Kernel scored 956.8 frames, vs reference Kobo Arc 10HD scored 1192 frames (an increase of 24.5%). Other tests in GFXBench GL have shown that the R6 has either outperformed the reference unit score, or on-par with it.

Any idea what this Driver Overhead test is actually testing, and why there's such a big difference in the score?
[Android Software/Hacking General [Developers Only]] Chatbox:
About Netflix issue...(error 0013): Could this be DRM related. Something related to Google Widevine Modular DRM? Using "DRM Info", it says Google Widevine Modular DRM is supported...but it's not giving out any other related info such as Version, Security Level...etc.

DRM Info from Play Store: https://play.google.com/store/apps/details?id=com.androidfung.drminfo&hl=en
[Android Software/Hacking General [Developers Only]] hipocrazy:
This zip fixed the error for me. Let me know if works for you.

https://drive.google.com/file/d/0B7Nw2o3bLoDoWlY4QlhMWDZvQTQ/view?usp=drivesdk

Edit: Sorry, looks like it's broke now. It did fix it for awhile though so perhaps there's an update out there.

Edit: Update! Works using Xposed and flashable zip from here http://xdaforums.com/showthread.php?t=2101525
[Android Software/Hacking General [Developers Only]] Chatbox:
Aware of the xposed "fix"...but what it really does is that it returns SDK version value of 15 to Netflix. This is more of a hack than a fix.

I'm hoping someone can really fix this in the ROM.
[Android Software/Hacking General [Developers Only]] hipocrazy:
And a great hack at that! Happy hunting.