yashsingh1/xdaforums huggingface dataset:
[Barnes & Noble Nook Tablet] ztztss:
Display flicker [PROBLEM REPORT]

CM 10.2 stable fresh install. Bexus V4 kernel. Governor ondemand. Min frequency 180 000 max frequency 1 308 000.

Mad screen flickering on 50% brightness on some backgrounds (default background also).

Decrease flickering to almost unnoticeable by lowering refresh rate. I edit

/sys/devices/omapdss/display0/timings

and reduce frequency from 70000 to 68000

But that works only until restart.

And also does not correct the second problem. On some background I still see waves moving from left to right. Maybe I should play with frequency rate more?

Third problem. Slow turn on of the display. I press the power or U button and count from 3 to 7 (from time to time) untill I can see the lock screen. Also lock screen is not very responsive. Sometimes it is ok. I did not notice such behaviour before kernel install.

Questions are:

1) is it only my case?

2) can you please dear Demetris correct refresh rate in kernel? )) or maybe give advice how to autostart timings change

3) what does the other numbers in the timings file influence?

70000, 1024/48/130/48, 600/8/12/20

Thanks in advance
[Barnes & Noble Nook Tablet] Demetris:
1.I have no flickers here seems like it

2. I already did

3. 1024x600 is your screen estate and i wouldn’t mess with that.
[Barnes & Noble Nook Tablet] ztztss:
Thank you.

1. Well then probably I've made something wrong. Maybe I should flash both kernel and ROM again.

2. Yes but you seem to have rasen the frequency too high. I want to get it lower )))

If someone experiences the same problems you can run an autostart script like described here

http://xdaforums.com/showthread.php?t=901791

just change the string to

68000, 1024/48/130/48, 600/8/12/20

or play with the string yourself

3. Yes I understand that but there are also "hsync len" and "vsync len" there. If I see horizontal waves - then something is wrong with hsync probably. I wonder what are the original kernel settings. Just can not read them from backup under windows.
[Barnes & Noble Nook Tablet] Demetris:
i can do a special release for you :)

Just give me some time as am currently too busy with gpad/xperia s/optimus x4hd etc :)
[Barnes & Noble Nook Tablet] mollari:
I see. Thanks for response! :good: One more thing, is it completely random or are there circumstances when the issue more likely to occur or less?
[Barnes & Noble Nook Tablet] Demetris:
Looks like its random
[Barnes & Noble Nook Tablet] ShinnAsuka:
So is there a kernel version for KitKat yet? The OP title says CM11 but I don't see a download link in the OP for 4.4. Thanks.
[Barnes & Noble Nook Tablet] topdawg7793:
In due time. He's busy with other projects but he said "it's coming". Only a matter of time :)
[Barnes & Noble Nook Tablet] Demetris:
Update:

Nook Tablet is used now by my daughter everyday for as long as battery runs.

So.. i will rebuild Bexus-N kernel without battery eating behaviour in mind :D

A straight port of all those who want it like it is will come soon enough.Then i will clean up the kernel to rebuild it more "mainline"

no more severe hacks in it ;)

And this is going to be the kernel Android v4.5 will have if we get one.

Cheers
[Barnes & Noble Nook Tablet] sagirfahmid3:
And what of the video streaming issue? Has it been fixed? (The CM11 nightlies work fine, video streaming included. Maybe merge some code that fixes it from there? <-- noob here, just throwing around random words).
[Barnes & Noble Nook Tablet] Demetris:
You want cm11 unofficiall to continue and be updated?
[Barnes & Noble Nook Tablet] newbtrigger69:
-=for those that would like to try=-

-=FOR THOSE THAT WOULD LIKE TO TRY=-

while waiting for bexus, if it comes out, try regressing to maybe 10.2.1 stable cm and use the already available bexus kernel for that or w/e u want to use cm wise. THEN, download kcin launcher [IMO the #1 kitkat launcher there is.(better than nova launcher, promise)] now u are runnin mirror image of kitkat with better performance. up to u guys. every1 likes to try new things so lmk how it goes whoever tries. :good::good::good: and yes ive done this and highly recommend to try.
[Barnes & Noble Nook Tablet] macrossmerrell:
Probably with CM11 having official nightlies, you could maybe just focus on Bexus Kernel and/or porting other ROMs like AOKP? I'd also LOVE to see some how-to posts / videos - a train the trainer setup - so others can assist in the work that you've been doing to date. I don't want to see Nook Tablet development cease because you've got to many new toys :D

I would put my vote in for 1100 to 1200Mhz and an option to OC the GPU again - muhahahah!

Thank you again for all you do! I can't thank you enough for the ROMs and Kernels you've made that have kept my tablet modern, fast and exciting!

Merrell
[Barnes & Noble Nook Tablet] hwy28spur:
How does this Kernel work or will it work with CM11 Anroid 4.4.2?
[Barnes & Noble Nook Tablet] topdawg7793:
It doesn't work with CM11. Just read the OP haha. It only has links for CM10.1 and CM10.2 versions. If you flash it, you'll just get a blank screen and it won't ever boot all the way.
[Barnes & Noble Nook Tablet] Juanito216:
Would be cool to see an unofficial omnirom.
[Barnes & Noble Nook Tablet] rajsris:
Hey demetris,

Any updates on the BexusN CM11 port?

Sent from my VZW MotoX
[Barnes & Noble Nook Tablet] Demetris:
Yeap i"ll post the new kernel later today
[Barnes & Noble Nook Tablet] Demetris:
Bexus-N for cm11 is up.

Spoiler alert

Bexus-N2 is coming soon
[Barnes & Noble Nook Tablet] sagirfahmid3:
Awesomeee.

Can someone let me know if the video issue is fixed?

Edit: CONFIRMED video streaming works now! WOOHOOOOOOO. Running Bexus N v1 for CM11, 1.3GHz :D
[Barnes & Noble Nook Tablet] rete:
Thanks. CM11 nightly with this kernel feels much snappier.

After first boot I did experience a Ducati crash for the first time in over a month - this was in YouTube (usual symptoms, video freezes and audio continues even after the app is closed). But after clearing data for YouTube and rebooting it's been behaving.
[Barnes & Noble Nook Tablet] rete:
Couple of days in, and I think this kernel is a keeper for me (especially if Bexus N2 will be limited to 1GHz).

Nook is smooth and fast with this kernel, and so far everything seems to work. :good:
[Barnes & Noble Nook Tablet] naveen_reloaded:
getting android.phone stopped working if i flash latest 4.2.2 gapps.
[Barnes & Noble Nook Tablet] rete:
Try flashing the right gapps. 4.4.2 Kit Kat. Since you have this problem with both Bexus kernels, the problem is likely on your side.
[Barnes & Noble Nook Tablet] naveen_reloaded:
can you link me to the right gapps ? i downloaded from CM wiki page for CM 11.
[Barnes & Noble Nook Tablet] newbtrigger69:
im SURE he meant the 4.4.2 - 20140105 gapps package (which is wut im using). not 4.2.2 maybe dyslexic, not sure. i say this because i started having same prob when installing nightlies past 03/01/14. had to downgrade below that point for it to work. idk maybe its just me
[Barnes & Noble Nook Tablet] naveen_reloaded:
http://gapps.itvends.com/gapps-kk-20140105-signed.zip

This wast he one i used . MY rom is cm-11-20140305-NIGHTLY-acclaim

If i simply flash the ROM and then gapps , everything works fine. If i flash bexus kernel ,i get this "android.phone" stopped working error. I wish it was happening just once and it goes away after i press "ok" , but it just loops and trying to even reboot becomes a much harder job.
[Barnes & Noble Nook Tablet] slomer:
ditto

Same here with the 03/08 nightly and kernel 2.3. Looks like Kernel V2 2.2 and 2.3 as well. I definitely have 4.4.2 gapps (using pa_gapps-modular-mini-4.4.2-20140307-signed.zip but also tried gapps-kk-20140105-signed.zip). Maybe it is The google now launcher or something? I guess I have to go back to an older nightly or the stock Kernel for now.
[Barnes & Noble Nook Tablet] blautens:
This is the best ROM ever for any device. Ever! Any!

Demetris - you are THE MAN.

You literally transformed my NT. It was running on CM 10.2 and was stable, but pokey. So slow that I had started to use it as just a video monitor for the babycams in the house, but now, after flashing with Bexus-N v4, it can actually be used for games and Plex and Netflix. Now it's more like the BabyTab, too.

And not only is it fast, but it's still stable - AND the battery life is awesome when sleeping (hey - I expect it to drain when using it).

I've flashed a lot of ROMs and kernels, but I've never seen one that dramatically changed the performance this much with no negative effects observed.

I've said it before, and I will say it again - kudos to you, good sir. Kudos!
[Barnes & Noble Nook Tablet] rajsris:
All versions of BexusN kernel seem to give com.android.phone crashes in the latest cm nightlies.

Sent from my Barnes & Noble Nook Tablet
[Barnes & Noble Nook Tablet] Demetris:
I"ll recompile again bexus after I sync sources no ETA's ;)
[Barnes & Noble Nook Tablet] Demetris:
Derped
[Barnes & Noble Nook Tablet] naveen_reloaded:
Can you update for new CM11 - M5 ?

I want to solve a touch input lag with different kernel , your possibly.
[Barnes & Noble Nook Tablet] Demetris:
I will. I have been working on kernel updates recently
[Barnes & Noble Nook Tablet] naveen_reloaded:
No Problem :) Thanks for the reply

One doubt though , is it possible to increase or lock minimum frame rate of the screen ? I feel the tablet scrolling is lot laggier. See here http://xdaforums.com/showpost.php?p=51916764&postcount=372

If you can help me on this issue , it would be great .

Thanks again.
[Barnes & Noble Nook Tablet] Demetris:
:D Its a gpu issue. This kernel overclocks the gpu to 384mhz and doesn’t exhibit this behaviour ;)

There is nothing wrong with your display.
[Barnes & Noble Nook Tablet] naveen_reloaded:
Thank god. I would really love to have less stuttering while scrolling.

Will wait for your kernel then .

Thanks again.
[Barnes & Noble Nook Tablet] rajsris:
Hi demetris,

Any updates with the kernel? My nook is longing for a better kernel! Latest Cm11 nightlies sleep too deep and run very slowly even with 1.2GHz!

Sent from my Barnes & Noble Nook Tablet
[Barnes & Noble Nook Tablet] LowEndGeek:
Hey everyone, just wanted to report I've found a temporary (and admittedly dirty) workaround to the phone closing issue. The basic process is this:

Install Rom and gapps, boot into tablet and setup as normal

Install titanium backup

Boot into recovery, wipe cache, dalvik and flash kenel then reboot.

Open titanium and freeze the two items in my screenshot (the phone items). The errors will go away and everything seems to work as normal
[Barnes & Noble Nook Tablet] naveen_reloaded:
thanks your method worked. But it took sometime to go into TB with all those error repeatedly popping .

But how to increase the GPU speed ? my scrolling is very bad. Its lagging a lot. Does BExus kernel have special app to tweak ? or i need to install some other app ?
[Barnes & Noble Nook Tablet] rajsris:
Bexus kernel already has faster GPU, it is at 384 MHz, while stock is 307. If you want to further tweak kernel settings, install the TricksterMod app

Sent from my VZW MotoX

---------- Post added at 10:41 PM ---------- Previous post was at 10:37 PM ----------

You can freeze these apps prior to installing Bexus kernel, should make it easier to freeze them

Sent from my VZW MotoX
[Barnes & Noble Nook Tablet] naveen_reloaded:
Installed trickster MOD and it shows GPU speed at 307. there is only two options though , one of 307 and another is 153. :crying::crying::crying:

I am not sure whether Bexus kernel setting apply.

Phone info shows i am on Bexus N v4 and ROM is 4.4.2 11-20140405-SNAPSHOT-M5-Acclaim.
[Barnes & Noble Nook Tablet] rajsris:
Bexus N v4 has GPU settings of only 153 and 307 MHz. In demetris' other thread, he has Bexus N 2 R3, which has 384MHz GPU. I personally prefer Bexus N v4, as it is running smoother on my tablet, and has many more CPU slots (180MHz all the way to 1.3 GHz).
[Barnes & Noble Nook Tablet] naveen_reloaded:
yeah installed other kernel , but still there is touch/input lag.

Are you guys also having this issue ?
[Barnes & Noble Nook Tablet] transvin:
how do i install this kernel? do i have to flash it in clockworkmod recovery?
[Barnes & Noble Nook Tablet] Sik-1:
Yes
[Barnes & Noble Nook Tablet] rajsris:
This kernel can be flashed onto CM11 M9, after freezing mobile data and telephony. WiFi works fine, and it seems much smoother!

Sent from my VZW MotoX
[Barnes & Noble Nook Tablet] Zuul86:
How do you freeze telephony and mobile data?
[Barnes & Noble Nook Tablet] rajsris:
http://xdaforums.com/showthread.php?p=53204058

Sent from my VZW MotoX
[Barnes & Noble Nook Tablet] Zuul86:
I found the telephoney apk. What is the mobile data one called?
[Barnes & Noble Nook Tablet] rajsris:
Phone. Apk
[Barnes & Noble Nook Tablet] champ1919:
where can I find Bexus-N Respin CM10.1 Edition??? download links are broken and I'd like to try that 1300 cpu setting on a 8 gig model running aokp.

Thanks
[Barnes & Noble Nook Tablet] qklodd:
I got an n2a card but cannot open the screen cause I either forgot the unlock pin #, or for some reason the card cannot take it... For all the time I repeated the same number I had, it kept saying try again. I had contacted the company but in vain. If one know how to unlock the custom card (n2a), that would be helpful...
[Barnes & Noble Nook Tablet] rajsris:
I agree with the sdcard change.

A. I suggest that 1.2 is more than enough, as the nook performs very snappy even at 1008mhz max. More battery is good.

B. I suggest maximum LCD refresh rate as that probably won't impact battery much.

C. I suggest maximum GPU as that too will not impact battery too much.

I take all this experience from using my galaxy nexus, which has similar omap architecture. Perhaps giving the ability to tweak these settings in trickster instead of hardcoding would be appreciated by everyone :)

Sent from my Barnes & Noble Nook Tablet
[Barnes & Noble Nook Tablet] johnmjohnson:
Absolutely yes! I have a script to switch it with every build. The complications of not having static storage is very frustrating.

We can always plug it in. Performance is key to keeping this thing fresh and usable.

Of course. Do it!

BTW, thanks for all your hard work on the Nook.
[Barnes & Noble Nook Tablet] Zuul86:
I like having the higher performing tablet over one that lasts really long.
[Barnes & Noble Nook Tablet] Kir6y:
Finally! Yes we need to use internal sdcard as default. I was thinking about that the other day. Some people prefer battery over peformance. Best way to do this is release two versions of the kernel, one with performance tweaks and other with regular updated tweaks. Internal SdCard default tweak can be on both:).
[Barnes & Noble Nook Tablet] petewr:
If it didn't install to the internal sd card, where did it go to?

I installed mine to the internal card without even considering it might go somewhere else.

On version two - I have had my nook on that one since about 36 or so hours ago. No drain during sleep, and minimal drain with Airplane mode on, Wifi off and using MoonReader for my books. Battery is still at 40%. (That is from 10pm on the 7th, local time to 7pm tonight. 45 hours) Good, or not? Seems good to me.:laugh:

Thank you very much for the kernels, I don't seem to be able to build my own at the moment. Appreciate your good work.

Off to try Version 7 of the kernel. Will report back.:cowboy:
[Barnes & Noble Nook Tablet] petewr:
On Kernel #7:

:silly: No sound available. Thought you would like to know.

Pete the Pirate:p
[Barnes & Noble Nook Tablet] topdawg7793:
I favor making the eMMC storage the default as well. As for the question of battery life, I wouldn't mind the 1.2ghz over clock. The lcd panel at max. spec. makes it feel very nice during usage and I favor that as well. As for the powervr, I personally think it is powerful enough for most people. Real Racing 3 runs smooth as butter on my nook and I can't imagine the real-world benefit of it (other than improving some benchmarks, which I could care less about).

What if you made another kernel for power users, with the 1.35ghz OC, max lcd, and 384 powervr? Or would that be asking for too much haha?
[Barnes & Noble Nook Tablet] TheForceUnleashed:
I have to be honest, I'm a pretty hungry man lol I will push my Nook to it's limits lol
[Barnes & Noble Nook Tablet] petewr:
if we didn't want to push the limits, we would still be using the BN lockware!:cyclops:
[Barnes & Noble Nook Tablet] chachi:
If implementing the sdcard switch, what then is optimal partition scheme for 16gb with no ext sdcard?
[Barnes & Noble Nook Tablet] Demetris:
Nope external sdcard will be available as always will just not be default.

Example:

Now if you try to download anything will download on ext sdcard when we switch will download on the internal mmc.

If you remove the ext-sdcard now you cant download anything :)

Χαιρετίσματα στην Ωραία Πάφο ;)
[Barnes & Noble Nook Tablet] Demetris:
Can you please test again V07 <--Re-download new V07 version.

And report if sound is fixed, thanks
[Barnes & Noble Nook Tablet] chachi:
All good here with quick YouTube test
[Barnes & Noble Nook Tablet] petewr:
I can do that. Sound works in V06 for me.:highfive:

Gonna try V07 again, now.:good:

---------- Post added at 08:40 PM ---------- Previous post was at 07:51 PM ----------

This is from my 16bit Nook Tablet/V07 kernel and the Ver08/04/2013 10.2 Android V4.3.

Sound works now after re-download and reinstallation of the V07 kernel.

I will top off my battery, and test sleep,Moon reader, and battery drainage times and percentages. Give me a couple of days, and I'll get back to you.

---------- Post added at 09:19 PM ---------- Previous post was at 08:40 PM ----------

Pete the Pirate!
[Barnes & Noble Nook Tablet] Demetris:
Hello,

In OP a big suprice for cm10.1/4.2.2 Roms :cool:

Test and report :fingers-crossed:
[Barnes & Noble Nook Tablet] petewr:
Got sound back.

Battery drained to 13% under sleep mode with airplane mode on and wifi off. Time frame was from 1am this morning until 9:20 am under sleep.

That was from 90%. :eek:

Between 10pm last night and 1 am this morning, I was using the wifi, browser, reader. On battery.:cool:
[Barnes & Noble Nook Tablet] lrs421:
Thanks for the 10.1 love! Runs smooth but battery drained quickly while sleeping with WiFi off. About 8% an hour for me. My daily driver kernel is NOF 2.4.

Sound/mic and 1080p playback worked great.
[Barnes & Noble Nook Tablet] Demetris:
V08 Released for both CM-10.2/10.1

Enjoy!
[Barnes & Noble Nook Tablet] Kir6y:
Im trying out succulents 10.2 build and I was wondering does your kernel work.
[Barnes & Noble Nook Tablet] petewr:
Not sure if it is the kernel (NV08) or the ROM (10.2 V20130811) or what but PlayStore no longer recognizes my wifi.:crying:
[Barnes & Noble Nook Tablet] chachi:
Had similar... Wiped data for Google services and store and rebooted and resolved itself
[Barnes & Noble Nook Tablet] Demetris:
Bexus-N V09 Out.

Have fun.
[Barnes & Noble Nook Tablet] petewr:
From 12 noon until right around 8 pm with WiFi on and browser, weather, google maps and two different readers in operation. Google services seems to take up the most.

Went from 100% to 13% battery in that time.
[Barnes & Noble Nook Tablet] Demetris:
Do you mean you have a good battery life or bad?

Your screen ON was 8 hours approx. and consumed 87% battery right?
[Barnes & Noble Nook Tablet] petewr:
Yes, screen on. Me using the readers and the browser, checking the weather (temp mostly, it is HOT here and that is how I judge how long to leave the animals outside to do their thing.)

And I thought that was good for on the battery, don't you?

Right now it is just out of sleep mode at 6:47 am at 90% plus I ran the Moon reader for an hour between 12:30 and 1:30am, but I do not remember what the precentage was at 1:30. Fully charged at Midnight. I will have to do it again later and get those numbers for you.
[Barnes & Noble Nook Tablet] UN5EEN:
Will this work on the carbon ROM?
[Barnes & Noble Nook Tablet] Demetris:
Only if you use the Bexus-N for CM10.1/4.2.2 AOSP version
[Barnes & Noble Nook Tablet] Demetris:
Bexus-N V09.1 Out.

Have fun.
[Barnes & Noble Nook Tablet] rajsris:
In Bexus-N v08, v09, and v09.1, my nook tablet has not gone into deep sleep on Cm10.1...not sure why. Mic and 10-touch all works well though.

Android system seems to be draining a lot of battery, currently on v09.1.

Sent from my Barnes & Noble Nook Tablet
[Barnes & Noble Nook Tablet] rajsris:
Sent from my Barnes & Noble Nook Tablet
[Barnes & Noble Nook Tablet] Demetris:
Install better battery stats and nail down what wake lock is draining your battery
[Barnes & Noble Nook Tablet] rajsris:
I just went ahead and reflashed Nook On Fire 3.22, which deep sleeps just fine on CM10.1 (doesn't go down to 200Mhz though...).

I will reflash the latest Bexus again, fully charge up, and let it drain to see what Better Battery Stats says is using partial wakelock and kernel wakelock.
[Barnes & Noble Nook Tablet] rajsris:
Just wanted to say that CM10.2 from succulent at iamafanof.wordpress.com also runs the latest Bexus just fine :)

Thanks for all your hard work Demetris!!!!

Deep sleeps and runs all the frequencies OK, 10-touch and mic work :D

Sent from my NookTablet
[Barnes & Noble Nook Tablet] Demetris:
And the Alarm clock right? ;)
[Barnes & Noble Nook Tablet] mollari:
No way! Seriously? :eek: Alarm never worked on NT afaik. I thought it's not possible for our nook. :)
[Barnes & Noble Nook Tablet] petewr:
Only doing V 0.95 for Android 4.22 (10.1) and not for Android 4.3 (10.2)?

Well, duh! If I had read all the way through the first post, you do say that!
[Barnes & Noble Nook Tablet] Demetris:
Well V0.96 is out, flash it and be amazed ;)
[Barnes & Noble Nook Tablet] johnmjohnson:
Just flashed this on 10.1. Wicked fast.

Thanks!!
[Barnes & Noble Nook Tablet] Demetris:
Check out [MENTION=270407]Post[/MENTION] #2 : Issues fixed :highfive:
[Barnes & Noble Nook Tablet] rajsris:
V0.96 is working beautifully here!! Using succulents rom CM10.2 for now.

Sent from my NookTablet
[Barnes & Noble Nook Tablet] daedricgeek:
Am currently using v1.0 with 4.2.2 Aokp . The kernel is solid . HW accel for videos is stable (compared to nof) . battery is good

the only issue for me is that the screen rotation is hit or miss ... I'm dwnlding succulent's cm 10.2 now to see if that works better .

Btw ,will there be any problem with the change to internal emmc as sd , since I'm gonna restore most of my apps ?

Thanks again and Great work . Keep it coming :beer:
[Barnes & Noble Nook Tablet] Demetris:
is not a kernel issue is a ramdisk one.

We need to set these accelerator permissions

chown system system /sys/bus/i2c/drivers/kxtf9/1-000e/delay

chown system system /sys/bus/i2c/drivers/kxtf9/1-000e/enable

I will do it when i find some free time ;)
[Barnes & Noble Nook Tablet] Demetris:
It was

chown system system /sys/bus/i2c/drivers/kxtf9/1-000f/delay

chown system system /sys/bus/i2c/drivers/kxtf9/1-000f/enable

:D not e ;)

10.2 kernel has it now at V1b

Cm10.1 not yet

Test and report.
[Barnes & Noble Nook Tablet] Kir6y:
V1b Working great. Recognizes and Responds to every rotation:).
[Barnes & Noble Nook Tablet] chachi:
+1

Just need to lose the space now in the filename so rom manager will be happy (and to save my lazy ass from renaming each time lol)
[Barnes & Noble Nook Tablet] petewr:
Interesting. Mine installed it with the spaces there and ran. Unless the spaces had already been fixed by the time I got it downloaded about an hour ago.

So far, So good!

Thanks demetris_I
[Barnes & Noble Nook Tablet] surfbuckeyesbc:
Great news, posting to keep up with when 10.1 has the fix. I too can confirm that there is a rotation issue.

Other than that, kernel seems kickbutt, just waiting for a full day and a full battery tomorrow to run it through it's paces. I went from running some hacked up 2.3 ROM ontop of B&N software, neglecting this unit for my new GS4, to running CM 10.1, this kernel, and a whole new life for this slab. Very excited, many thanks!!
[Barnes & Noble Nook Tablet] petewr:
Plus with a little exploring and trial and error stuff, and I found that if you can find CM10.2 themes they will work (AOKP)

CM10.2 TouchWiz 5.0 free theme is one of them.