yashsingh1/xdaforums huggingface dataset:
[Android Software Development] pix106:
Ok, so finaly no difference.

If i knew how to deal with it, it would have been solved for months... :)
[Android Software Development] Vincent583:
Hi

I want to take screenshot in cyanogen but i don t now how to do

Do you have a solution?
[Android Software Development] pix106:
Use google, you'll find tons of pages about it, including this one which sums it all up.
[Android Software Development] qunatumhacker217:
didnt work for me some kind of error while installing cm12.1 and when rebooted, back to android starting from scratch

PLEASE HELP i really want cyanogenmmod
[Android Software Development] mayu3086:
Wrong preloader flashed

Hi! While trying to flash, I think I flashed wrong preloader (MT6752) Now my device doesn't boot, computer doesn't recognize, nothing works. I've read every thread but there's no way to fix it? Can anyone please help?
[Android Software Development] pix106:
As stated in OP, this ROM is to be flashed using TWRP, and not SPFT... So i think you messed things up before flashing this ROM.

Anyway, you can try to unplug the battery to turn the tablet of, and see if you can flash a stock ROM.

You can also search "unbrick" in this thread (you're not the only one) or Google unbrick mtk.

Good luck :)
[Android Software Development] pix106:
If you're not more precise than "some kind of error", noone can help you...

Anyway, read OP again, the red lines in particular if you come from a KitKat ROM.
[Android Software Development] mayu3086:
I've been through numerous threads, most of them say it's not possible to recover if you flash wrong preloader. Also some of them say it's possible given you are able to get into META mode. But when I connect it to my PC they META mode does not start, I'm very frustrated by this, sorry if this is not the right place but I wonder if anyone's able to fix this?
[Android Software Development] pix106:
Did you try disconnecting the battery connector, to be sure your tablet is *really* off before pluging it to your PC ?
[Android Software Development] Tomek0000:
My battle with CM installation .

I started using Tab2 a7-10f with 4.4 and philZ recovery. I deleted flash using option to remove all as prepare ro install new rom. Next I replaced philZ with TWRP 3.0.2.0. After many tries and boot loops I am able to define my war.

0. Installation of stock 4.4 and next : KitKat_ONLY-SPFlashTool_minimal-S057_LP_upgrade_for_KK_bofore_flashing_custom_rom_TWRP3_included.zip

1. Go to TWRP and wipe to factory state

2. Installation of CM 12.1 from external card.

3. Installation of gaps .

4. Restart and again in boot loop.

5. Come back to TWRP (it is extr. hard if I do not have rooted system because of malfunctione VOL- button).

6. Wipe to factory and restart .

7. CM starts , configures itself.

8. Restart or power off/on and again in boot loop.

9. TWRP and wipe to factory , restart and CM starts . And again and again ...

I modified the way installing trash stock 5.0 and repeated CM installation. It is the same ... once boot loop or wipe to factory for single CM start.

I changed my minde and will stay with 4.4 . What a pity.
[Android Software Development] pix106:
You need to be coming from LP ROM, or minimal upgrade.

I only had bootloops coming from KK ROM, that's why I made the minimal upgrade package.

So Imho,there is something wrong on your side, maybe SD card content.

Or the minimal upgrade package is not enough => flashing full LP stock ROM first (as many did before CM12.1 was built) could be the way to know about this.

Last, using a KK ROM today is a bad idea, for security reasons... And LP ROMs are not really better, last security upgrade in cm12.1 was released in november.
[Android Software Development] Tomek0000:
Hi,

1. Is it : T2-A7-10F_S57_160701_ROW_unofficial.zip ok ? I used it from other your thread about tab2. I used this as stock 5.0. (it's GUI is 2 times slower in compare to 4.4 ) for only check if CM will start if installed on 5.0 version. But the result is continous boot loop.

2. Is KitKat_ONLY-SPFlashTool_minimal-S057_LP_upgrade_for_KK_bofore_flashing_custom_rom_ TWRP3_included.zip enough for minimal upgrade after kk ? If not, I did something wrong.

3. CM was my way to use 5.1 . I have only devices with 44 and 51 androids. I will never use lenovo's 5.0 trash.

I started to try to use CM on my son's tablet because it started to bootloop during normal use it with android 4.4 . If I install 4.4 or 5.0 stock from lenovo , all is ok. (Is it because I fill each part of flash only in stock installation? ) If I install CM or Orion I have bootloop. Only wipe to factory state lets me to once start CM . Maybe it is hardware fail, but very strange.

Do you think, the updates has any security sense in android industry world ? It it has, we have no choice and only buy Shield or Nexus . If you select any other, you have to buy new hardware each year. I am disabling automatic system updates on each rooted devices. This is a level of my thinking of security updates needs.
[Android Software Development] pix106:
this should indeed be ok with either the full LP rom, unofficial or official (of course, i used the unofficial package i published here before flashing CM)

To be sure, you can try official v54, as unofficial v57 is partially a dump of my tablet.

using nova launcher, Lenovo's stock (or modified stock, actually) rom was clean and fast enough IMHO, but i have very few needs, as i really bought this tablet to learn about rom building :)

I think it is related to your setup, but i don't know why.

You can try to flash the official v54 rom, flash every partition, of course.

And you can also try without a SD Card, and after wiping internal storage too.

As i work in IT, i'm sensitive to security issues.

I do care about security updates, disabling updates is bad IMHO.

That's mainly why i started using custom roms on my devices, to have recent security updates that manufacturers stop releasing after 2 years at most.

Root was necessary for me only to install an adblocker, but now there are a few adblockers which do not need root, i don't feel it is necessary and i keep my phone stock... as long as it works and there are security updates :)

That's why i would like to achieve a CM13 (or AOSP, or Omni, or any other rom actually) build for the Tab2 A7-10F, so it has more recent security updates, but i don't know why it refuses to boot for now.
[Android Software Development] shanky0129:
Hey guys,

I just flashed this rom and am very happy with it but.....

the notification bar is very small (width) and feels weird....

I tried changing the dpi but it make the screen blurry....

So is there any way to make the status bar bigger??

Thank you!!
[Android Software Development] Tomek0000:
[MENTION=3064479]pix106[/MENTION]

I have a problem with my tablet. The VOL+ is malfunctioned and I have very big problem with calling recovery on not software way . I have adroid 4.4 prerooted and this way I can operate the recovery . Could you suggest 5.0 rom prerooted for make the test you described ?
[Android Software Development] pix106:
I don't understand what you are asking : if you are on KK you don't need recovery but SPFT to flash a LP stock ROM first.

And to reboot the recovery without buttons :

> adb shell

> reboot recovery
[Android Software Development] Tomek0000:
Thanks , I have never thought about this aspect of adb use ...
[Android Software Development] kidd25:
There is akernel for overclocking? I want to my device cpuand gpu overclock,because there is some performance issue with cm 12.1
[Android Software Development] Tomek0000:
Hi, I used 5.0 v54 as you suggested .

I installed android 5.0 v54, start this system for adb communication and tried to install twrp 3.0.2 and here was first problem. It was not possible. If I call recovery from adb , I always saw picture about error. If I send twrp at the same moment when I call recovery from adb , I have been able to go to tvrp, unlock it and time out, device restarted . Next try to recovery with info about error. I used 3.1.1 and no problem at all. I wiped all except external card, next wiped to factory and installed cm12.1 , wiped dalvik, installed gaps pico, restarted device and now I am in boot loop. Now I am in long try to call recovery from keyboard.

Edit. I wiped to factory and restart and this time it does not help. Again in bootloop.

Edit. I installed stock 5.0 , wipe to factory and installed this time older cm-12.1-20161027-UNOFFICIAL-Tab2A710F.zip . Restart when finished and again in boot loop. I will not try any more to install CM on this tablet. It has no sense.

Thank you for good wishes and goodbye.
[Android Software Development] pix106:
If there was, there would be less performance problems... :)

Lenovo kernel source is not usable imho, but maybe I don't know how to deal with it.

Any dev help is welcome about this.
[Android Software Development] pix106:
Sorry about that, I can't help you any more since I don't have bootloops at all when coming from LP stock, and no bootloops when coming from KK+minimal upgrade.

Note : the "error recovery" is stock recovery, I suppose (exclamation mark), which is self reflashed by stock ROM (there is a patch for that in Twrp thread)

I understand your volume button problem makes you want to boot stock ROM and then reboot to recovery... and then it's too late, stock recovery has been flashed back. Bad Button. Sad. :)

When you say bootloop, I suppose you really saw the boot animation stop and then start over, right ? It was not just the long first boot (up to several minutes), that is not a "loop".

Anyway, I understand you're bored with this, your kid won't be using CM for now :)
[Android Software Development] Tomek0000:
Hi. The bootloop in my observation: tablet starts , shows Android and Lenovo initial text during some seconds , hides it and shows nothing for a moment and restarts and again the same. No animation.

My tablet can be different because it has china version bootloader. The menu is in china language.
[Android Software Development] Doume59249:
One recovery menu is in Chinese language, but the other can be in your choosen language !

if you press Vol- and power, you obtain 1 recovery

If you press Vol+ and power, you obtain the 2nd recovery
[Android Software Development] pix106:
Both volume buttons to boot Twrp ;)
[Android Software Development] pix106:
So boot doesn't reach boot animation... That's weird !
[Android Software Development] Doume59249:
Probably an access problem to flash memory ?
[Android Software Development] Vincent583:
Hi

I have a problem

I have deleted an system app accidentenly which called "Docs" and i can't install app by app download

I already flash cyanogen rom for fix it but it didn't work
[Android Software Development] pix106:
This is not an app from this rom.

It's probabably from the google apps you flashed.
[Android Software Development] Vincent583:
Ok i go flash gapps pico now thanks
[Android Software Development] sssayeed96:
Any update on a7-20f? (It's same device but with rear camera)

Also I have no idea how to go about doing this I am stuck on 4.2 and no ota to higher version available :(

Any help is highly appreciated
[Android Software Development] pix106:
1 - i don't own a A7-20F, so i can't try anything by myself for this model.

2 - some people have managed to install this rom on A7-20F, modifying its install script and i suppose flashing stock/debloated stock LP first, but i do not support any of these because of point 1
[Android Software Development] aprilakshay:
Works fine

Battery life increased.Performance , in terms of gaming experience a few noticable frame skips few days after reboot.
[Android Software Development] anupam_on:
Hi, any plan to upgrade with nougat?
[Android Software Development] Dev_Mashru:
Can anyone tell me how much storage they are able to use. I clean flashed the rom again but still I see only ~2.5GB free. Is it only me it somebody else is too facing this?
[Android Software Development] pix106:
On which partition ?
[Android Software Development] Dev_Mashru:
On internal storage
[Android Software Development] pix106:
Internal storage partition size is 2.9GB.

Its content is not altered by a rom flash, as it's like an "internal thumb drive" and it contains your data.

You have to clean it yourself if you want to, "Android" directory contains apps data, and/or you can wipe it from recovery.
[Android Software Development] Dev_Mashru:
Does that mean I get to use 5GB or only 2.9GB?
[Android Software Development] pix106:
i'll have a look at this.

Edit :

You're right, and i had the same issue, but did not notice it as i only use this tablet for android dev stuff : data/internal storage partition size was reduced to 2.9GB, instead of 5.4GB.

To get the 5.4GB back, i have flashed stock rom with SPFT.

To be sure, i tried flashing many roms/recovery/boot images, none triggered the issue.

Data/internal storage partition got corrupted/modified, but i don't know how it happened.

What rom were you using before ?

Did you ever try encrypting your tablet ?

Do other people have the same issue ?
[Android Software Development] mayank22:
Here's a screenshot of my settings/storage. It shows total 5.3 GB. What does ur shows?
[Android Software Development] Dev_Mashru:
After flashing the stock rom, I'm able to use 5.4GB, but in cm12.1, I'm able to use only 2.x GB.

No, I haven't encrypted the tab before. I was on stock rom before.
[Android Software Development] pix106:
That's weird, I tried with cm, cm+mini opengapps, still have 5.4GB.

What did you flash exactly ?
[Android Software Development] Dev_Mashru:
Even I flashed the rom with mini gapps. Let me flash and check again.
[Android Software Development] pix106:
What version of twrp are you using ?
[Android Software Development] Dev_Mashru:
Now it seems to be fine......

Clean flashed ROM with micro gapps.
[Android Software Development] bastard79:
hello all,

today i bought second a7-10f tablet for my kids and it dont want upgrade to lolipop, show it has latest firmware :/ android 4.4.2 :(

is any chance to OTA upgrade ?i

if no i need to upgrade to cm12.1.

please tell me how battery life comapre to stock ?
[Android Software Development] pix106:
you'll find stock rom, debloated stock rom, and other infos there : https://xdaforums.com/t/lenovo-a710

End of OT please, this is a specific rom thread, not a general Q&A.
[Android Software Development] Miguel-gb:
Hi guys, my mother owes this tablet to play Hay Day and to watch Netflix through Chromecast, that's all, and I wonder if Netflix will work having this rom as stock rom (LP) is as slow as a turtle :D

I know that if that's not the case, Netflix is at fault, but just wanted to be sure...

Thank you!
[Android Software Development] manuuu90:
Looks like a nice rom, thanks for it.

But before i install it, i would like to ask, is the Dolby Stuff that comes with the original firmware still included here ?

Also the Dolby widget where you can turn dolby sound on and off ?
[Android Software Development] pix106:
No it's not
[Android Software Development] theGhost31:
Hi

I decided today to use this ROM. Its amazing, good job. Just on thing, YouTube 720p and my movies in 720p with kodi are really sluttering. For kodi I removed mediacodec accélération and now its working. I guess its a problem of acceleration hardware, isnt it ? I use the Last version. Do you know if its possible to fix that ?

How can I do for YouTube ? I can't choose if I want or not thé acceleration.

Thank you in adavance
[Android Software Development] shivskak44:
some tell me please.!! if i can build cm 13 or lineage os 13 for lenovo tab 2 a7 10f ??

thnanks.. in advance!!
[Android Software Development] shanky0129:
The dev tried it it didn't boot...

And BTW ROM building is not easy...
[Android Software Development] pix106:
If you want to help achieving lineage 13 build, setup a build environment, find what's wrong in the cm13 ramdisk to prevent ROM from booting and tell me or do a pull request on github sources cm13 branch.

I may miss something that would be simple for someone with a solid ROM building experience.

Constructive help would help me find some time for this project. Wishes, even best ones, won't :)
[Android Software Development] shaleen:
Guys is there any fix on this Rom , apps moved to external SD card are getting deleted after rebooting the tablet. Even I've faced this issue on OrionLp. Its annoying I have download apps again n again. Please let me know if there is any fix the internal memory of this tab is not so good, for installing apps
[Android Software Development] manuuu90:
Are you planning to update this ROM to LineageOS ?
[Android Software Development] pix106:
Read last page, you'll have the answer :)
[Android Software Development] Betyarka:
I just find last week this rom. I install. Very good working, fast ROM. Thanks.
[Android Software Development] theGhost31:
Which last page ? The first page you mean ? I didn't see any text about that.

BTW: Any news to fix the problem of acceleration during the play of a video ?

Thank you

Edit: I think about the HWC that will be not fix if I following this repository: https://github.com/Cyanogenmod-for-Lenovo-Tab2A7-10F/android_device_lenovo_Tab2A710F/tree/cm-12.1
[Android Software Development] pix106:
I mean last page, the few last posted messages of this thread... where I stated I needed help to go on.

Anyway, I recently have managed to have the first step of a boot using lineage 13, but i still need help to go on.
[Android Software Development] pix106:
"Live" streaming means "technical" streaming is in realtime, but the event may not :)

The live streaming problem with this rom is the one you describe with CNN : some videos are not displayed and so there is only sound.
[Android Software Development] shukat:
i want to install this rom.i am currently on latest stock rom. plz tell me whole process
[Android Software Development] pix106:
read whole first post, then follow the installation instructions
[Android Software Development] thE_29:
How is your battery-life? Loaded it to 100% at friday at the office and today it was again at 0%/turned off. I have nothing really installed, except Minimal GApps..
[Android Software Development] pix106:
I have already left this tablet with cm12.1 for many days (weeks ?) in standby, even with WiFi on. Battery had of course lowered, but not 0% :)

I usually use mini gapps package.
[Android Software Development] thE_29:
Had it at 85% 2 hours aga. Then unplugged and the android statistics tells me the battery will have enough power for 8 hours?!?!

Have it on 100% now and will leave it like that. Display turned off and Wifi turned on (BT is turned off too). Even turned location off.. Lets see what it is tomorrow morning :)
[Android Software Development] thE_29:
I think the problem is, that the device always changes it modus to "power", instead of the normal mode.. With 91% left, it says I have around 11hours left.. With 100% it has 24hour standby, which is really bad. When compared to your modified Lenovo ROM.
[Android Software Development] pix106:
This is clearly stated in the OP, default power mode is performance :)

And imho you can't compare stock and custom ROM about power consumption...

Anyway, I don't have such bad battery stats, at all, so imho either there is one or more apps that drain your battery, or your battery is dying.
[Android Software Development] thE_29:
Yeah.. Looks like the battery is dying. Well I currently use it for Apps developing and it is more or less connected the whole time. Have the Pixel C with Android 8 and the Lenovo with Android 5.
[Android Software Development] mayank22:
Using the alternate boot image provided (with hotplug for balanced mode), setting battery profile to balanced on every bootup and turning off the per app basis profiles, the battery consumption has decreased very much.
[Android Software Development] thE_29:
The funny thing is, I left it at the Office at Friday. WIFI turned on and now it has 98% left and the battery-statistics tells me I have 201 DAYS standby left :)

I dont know what the app/circumstances the battery drain happens..

Edit: Ok, 6 hours later it is at 0%.. The battery seems the problem or has some series issues..
[Android Software Development] shanky0129:
Eagerly waiting for cm 13/14..... [MENTION=3064479]pix106[/MENTION] I was wondering if you could get Android go working on this device as the specs are pretty bad....
[Android Software Development] pix106:
Cm13 could be done if I could get help from some experienced developer, but since thp@1997 who helped for a few weeks to finish cm12.1, I'm alone with insufficient knowledge, time and sources.

Device sources are on a GitHub, a few people forked the repos but no one did work on it as there was no comits nor pull requests.

I don't know what to do with the mtk repos (MAD and a few others), I tried replacing all Android projects with those repos and could not even build it.

So without help nothing more will happen from my side.

Android 7 or 8, with no working kernel sources and knowledge to modify them, it's a no go
[Android Software Development] shanky0129:
I wish I could do something but I'm noob.....

Sad to see that development is dead..

Again thank you for your great work keeping the device alive....
[Android Software Development] pix106:
I suppose you're not really surprised, it's been this way for months : I kept saying I need help to go on, real help.

I asked for help on cm for mediatek thread, but the gurus don't answer often, and when they do they either stop when it's begining to be interesting (that's what happened to me, I was given interesting info but I did not understand it all ; he stopped answering), or they laugh at people because of their noobness...

I've spent hundred of hours on this tablet, the bad way as I don't get any result more than what I got with cm12.1.
[Android Software Development] shanky0129:
It's really sad that your not getting help in such a vast community...I hope all the work that you have put in doesn't go in vain....that's all I can say. :(
[Android Software Development] shanky0129:
Hey guys,

Found a problem in smart lock...

The face unlock feature does not recognise a cam and says it is not found...(ss attached)

Anyone has idea on how to fix?

Thanks in advance
[Android Software Development] pix106:
Maybe a logcat would give some info, but i think it's because video recording is not working using stock camera app (known issue).
[Android Software Development] Dev_Mashru:
I don't think this tab supports face unlock. There is no such option in the stock rom at least. Please correct me if I'm wrong.
[Android Software Development] shanky0129:
See if this helps....
[Android Software Development] shanky0129:
I have used the stock ROM for only a half an hour so can't comment on that...:laugh:
[Android Software Development] pix106:
A logcat is a file, a huge file, not a screenshot with no details. Put this file on pastebin, for example.

Try again :)
[Android Software Development] shanky0129:
Haha thought that would be enough.. I'll send the file soon
[Android Software Development] shanky0129:
Check your pm [MENTION=3064479]pix106[/MENTION]
[Android Software Development] harshanandalaya@gmail.com:
I am not getting the scatterfile
[Android Software Development] pix106:
There is no scatter file because this rom has to be flashed using a recovery. Read OP again :)
[Android Software Development] kirito9:
[MENTION=3064479]pix106[/MENTION] is there anyway to disable block base OTA when compiling this ROM? I really prefer the old method lol.
[Android Software Development] pix106:
probably, modifying platform/build.

I did so for AOSP 5.1.1 (unreleased as it's not stable) : see this commit, and add BLOCK_BASED_OTA := false in your BoardConfig.mk

Anyway, you know you can read the block based image, right ? :)

[URL="https://github.com/xpirt/sdat2img"]sdat2img[/URL] system.transfer.list system.new.dat system.new.img

So, you're building this rom, did you find anything interesting to improve it ?

I have been working on a cm-12.1-test branch (see my github), i can use a few less blobs and build a few libs from source.