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[Q] Unacceptable battery drain on GT-P7500.

24th February 2013, 10:08 PM   |  #1  
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Hi Everyone,

I am currently seeing unacceptable battery drain on my GT-P7500 (original SGT 10.1).

Battery capacity falls at 1.4% per hour overnight when the device should be in deep sleep. The problem seems to have started when I updated to ICS. Using BBS and other apps, I have established that the KWL l2_hsic prevents my tab from sleeping when mobile data is off. When data is on, other KWLs, notably, multipdp, secril_fd-interface and PowerManagerService, take over. My tab is not rooted.

I have been trying to sort this out for a few weeks but I'm no nearer to resolving the problem. The support from Samsung UK has been extremely disappointing (I'm being polite!).

Can anyone help?

AD
25th February 2013, 03:08 PM   |  #2  
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Problem solved 3 months ago.
Quote:
Originally Posted by Anne Droid

Hi Everyone,

I am currently seeing unacceptable battery drain on my GT-P7500 (original SGT 10.1).

Battery capacity falls at 1.4% per hour overnight when the device should be in deep sleep. The problem seems to have started when I updated to ICS. Using BBS and other apps, I have established that the KWL l2_hsic prevents my tab from sleeping when mobile data is off. When data is on, other KWLs, notably, multipdp, secril_fd-interface and PowerManagerService, take over. My tab is not rooted.

I have been trying to sort this out for a few weeks but I'm no nearer to resolving the problem. The support from Samsung UK has been extremely disappointing (I'm being polite!).

Can anyone help?

AD

Try this:
http://forum.xda-developers.com/show...y+drain&page=6

I'm still happy with it. Tab lasts with normal use 4-5 days. Not using it, 1% per day instead of 1% per hour.
Also tried samsung portugal that had no idea about the problem. They told me to do a factory reset....
26th February 2013, 10:41 AM   |  #3  
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Quote:
Originally Posted by Phibs

Try this:
http://forum.xda-developers.com/show...y+drain&page=6

I'm still happy with it. Tab lasts with normal use 4-5 days. Not using it, 1% per day instead of 1% per hour.
Also tried samsung portugal that had no idea about the problem. They told me to do a factory reset....

Hi Phibs,

Thanks for the feedback.

Unfortunately, the link you have provided takes me to a 404 error.

In view of the excellent battery life that you get, I am very keen to see what the link has to say.

AD
27th February 2013, 02:37 PM   |  #4  
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Quote:
Originally Posted by Anne Droid

Hi Phibs,

Thanks for the feedback.

Unfortunately, the link you have provided takes me to a 404 error.

In view of the excellent battery life that you get, I am very keen to see what the link has to say.

AD

Sorry!!!
Here goes

At last.

For those who have the drain problem and don't want to install a deodexed zipaligned and already rooted rom here goes what i did,

1 - Install stock rom from your country using odin.
2 - Install bootloader CWM. (I used CWM 6).
3 - Root your device using superuser or supersu. (I was not able to install supersu directly from zip file!!!???)
4 - Extract boot.img from CHN rom that you can find in sammobile.
5 - "Tar it"
6 - Install boot.tar via odin. Now you won't have wifi.
7 - Copy the following files from CHN stock rom. To copy this files you have obviously to extact them. You may use, I think Toldo won't be mad, his stock rom's Zipaligned, deodexed.....
/system/lib/modules/dhd.ko
/system/lib/modules/scsi_wait_scan.ko
/system/lib/modules/tcrypt.ko
/system/bin/wlandutservice
/system/bin/wpa_supplicant

Voilá. The P7500 finally deep sleeps for long long time.
Heuuu, not completely.
Yesterday, after several days working perfectly i found out that when you unmount a pen directly through the notification bar, the device stops "deep sleeping". A reboot will solve the problem. I already knew about this problem and the solution to prevent a reboot is to unmount the pen via settings.....

Hope this helps someone.

Thanks to Stiffmeister from another forum who used and cooked Toldo's Stock Rom (which are stock rom zipaligned, deodexed and unsecured) and solved the Draining problem.
Thanks to Toldo for his great job of extracting stock Rom's and making them available.
The Following User Says Thank You to Phibs For This Useful Post: [ View ]
27th February 2013, 06:07 PM   |  #5  
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Newbie here
Quote:
Originally Posted by Phibs

Sorry!!!
Here goes

At last.

For those who have the drain problem and don't want to install a deodexed zipaligned and already rooted rom here goes what i did,

1 - Install stock rom from your country using odin.
2 - Install bootloader CWM. (I used CWM 6).
3 - Root your device using superuser or supersu. (I was not able to install supersu directly from zip file!!!???)
4 - Extract boot.img from CHN rom that you can find in sammobile.
5 - "Tar it"
6 - Install boot.tar via odin. Now you won't have wifi.
7 - Copy the following files from CHN stock rom. To copy this files you have obviously to extact them. You may use, I think Toldo won't be mad, his stock rom's Zipaligned, deodexed.....
/system/lib/modules/dhd.ko
/system/lib/modules/scsi_wait_scan.ko
/system/lib/modules/tcrypt.ko
/system/bin/wlandutservice
/system/bin/wpa_supplicant

Voilá. The P7500 finally deep sleeps for long long time.
Heuuu, not completely.
Yesterday, after several days working perfectly i found out that when you unmount a pen directly through the notification bar, the device stops "deep sleeping". A reboot will solve the problem. I already knew about this problem and the solution to prevent a reboot is to unmount the pen via settings.....

Hope this helps someone.

Thanks to Stiffmeister from another forum who used and cooked Toldo's Stock Rom (which are stock rom zipaligned, deodexed and unsecured) and solved the Draining problem.
Thanks to Toldo for his great job of extracting stock Rom's and making them available.

Thanks but can you please tell me step by step how do to this ? i am having same problem GT-P7500 , 3G, XXLQ8...

I am 100% noob in android and i have not done even a single flash , installation of rom
Thanks
27th February 2013, 08:08 PM   |  #6  
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Quote:
Originally Posted by touch.diamond

Thanks but can you please tell me step by step how do to this ? i am having same problem GT-P7500 , 3G, XXLQ8...

I am 100% noob in android and i have not done even a single flash , installation of rom
Thanks

You have to search in xda forum. There are multiple guides that will lead you trough.
If you are unable to find it, I'll try to make one.
1st March 2013, 12:47 PM   |  #7  
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Hi! I'm in same case, but my battery drain about 2%/hour.

CHN Stock ROM is Chinese? I use to flash CM10.1, can I repair the error with this ROM?

In my case Samsung Spain says that it works perfectly...

Thanks!
3rd March 2013, 09:16 PM   |  #8  
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Quote:
Originally Posted by Phibs

Sorry!!!
Here goes

At last.

For those who have the drain problem and don't want to install a deodexed zipaligned and already rooted rom here goes what i did,

1 - Install stock rom from your country using odin.
2 - Install bootloader CWM. (I used CWM 6).
3 - Root your device using superuser or supersu. (I was not able to install supersu directly from zip file!!!???)
4 - Extract boot.img from CHN rom that you can find in sammobile.
5 - "Tar it"
6 - Install boot.tar via odin. Now you won't have wifi.
7 - Copy the following files from CHN stock rom. To copy this files you have obviously to extact them. You may use, I think Toldo won't be mad, his stock rom's Zipaligned, deodexed.....
/system/lib/modules/dhd.ko
/system/lib/modules/scsi_wait_scan.ko
/system/lib/modules/tcrypt.ko
/system/bin/wlandutservice
/system/bin/wpa_supplicant

Voilá. The P7500 finally deep sleeps for long long time.
Heuuu, not completely.
Yesterday, after several days working perfectly i found out that when you unmount a pen directly through the notification bar, the device stops "deep sleeping". A reboot will solve the problem. I already knew about this problem and the solution to prevent a reboot is to unmount the pen via settings.....

Hope this helps someone.

Thanks to Stiffmeister from another forum who used and cooked Toldo's Stock Rom (which are stock rom zipaligned, deodexed and unsecured) and solved the Draining problem.
Thanks to Toldo for his great job of extracting stock Rom's and making them available.

In step 6 (Install boot.tar via odin. Now you won't have wifi.), when i press start in Odin apperas LNX at device square and doesn't move... I reset the tab and nothing changes...
4th March 2013, 10:31 AM   |  #9  
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Quote:
Originally Posted by LluisAzm

In step 6 (Install boot.tar via odin. Now you won't have wifi.), when i press start in Odin apperas LNX at device square and doesn't move... I reset the tab and nothing changes...

Whitch version of odin are you using? Never had that problem.
I used version 3.07, choose the file boot.tar via PDA button.
If it doesn't work try to put inside the TAR boot.img and cache.img, both from the chinese ROM.

In reply to your previous questions, CHN is chinese.
Never tried CM10.1 since it still has minor bugs.
4th March 2013, 12:41 PM   |  #10  
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Quote:
Originally Posted by Phibs

Whitch version of odin are you using? Never had that problem.
I used version 3.07, choose the file boot.tar via PDA button.
If it doesn't work try to put inside the TAR boot.img and cache.img, both from the chinese ROM.

In reply to your previous questions, CHN is chinese.
Never tried CM10.1 since it still has minor bugs.

Thanks for your reply! Yes, I use Odin 3.07 like in snapshot. It stops in this screen, tab has the progress bar without evolution...

First i would try if battery drian stops with this method, then i try with CM10.1.
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