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Since the release of J.C. Sullins latest experimental CM10 rom dated 20130304 in which he tried to correct the battery drain issue while the TouchPad is asleep, a whole new situation has arisen that some folks are experiencing really great battery drain, around -3 to -4ma, while others are seeing in the range of -20mA or so. J.C. recently posted this about it:
**************************************************************************************************************
(Posted by J.C. Sullins in the "How to install CM10 thread)

"I've been developing/testing the low battery drain for several weeks now with minimum drain as mentioned elsewhere. Then, a few days ago, all of sudden, it wouldn't drop below 18-22mA. After checking several things, I decided to check in webOS. Same thing in webOS.

So, on a hunch, I decided to reflash the A6 firmware (see tpdebrick-v004 thread).

Back to normal now.

My explanation: The A6 firmware is a bit flakey and reflashing it's firmware resets some of it's non-volatile memory to a known-good state.

BTW, if you follow the tpdebrick-v004 process, please send me the "typescript" file obtained when you do so."
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All of this has created a whole new set of questions and concerns about battery drain and how it is going to be addressed.

I've created this thread to give everyone a place to discuss this and not clog up other threads.

UPDATE:

New methods of flashing the A6 firmware have been found and forum member RolandDeschain79 has been working overtime to create a written guide and two videos on how to flash the A6 firmware. First the videos:

Flashing A6 firmware, method 1:

https://www.youtube....h?v=3T2Apdc15uY

Flashing A6 firmware, method 2:

https://www.youtube....h?v=5lOGY94RRDs

Flashing A6 firmware method 3:


If you prefer a written guide read on:

HP TouchPad Battery Drain issues during sleep (Important):

The Problem:
Developer James Sullins, Aka Jcsullins, has informed HP TouchPads users that there is a problem with our tablets A6 Firmware. This issue can cause an usually high battery drain during sleep. This problem occurs overtime while running both CyanogeMod and WebOS, on the HP TouchPad. As a result the Touchpads battery drains more quickly with daily use and the overall life span is reduced.

The Solution:
Reflashing the A6 Firmware effectively fixes the problem but may need to be repeated as a part of regular HP TouchPad maintenance.

How to test:
How to monitor your battery
To monitor your battery drain history during sleep install the free app Battery Monitor Widget:
-Once installed open the app and go to history to see a log of your devices sleep history.
-To setup the Battery Calibration correctly for the HP TouchPad, this is based on the capacity of the installed battery in your
TouchPad. The next instruction tells you how.
-go to BMW settings/calibration/Battery capacity/ and set it to 6300 (*f29c), 6000 (*i29c) or 5800 (*s29c) and tap OK
-Note* See the Battery p/n # on the original packaging. Based on the p/n of your battery, set the capacity as described above.
-Note* after setting the calibration, users will have to allow several hours to pass while battery history in being accumulated.
Or
You can also use Cool-Tools to monitor your battery drain in real time.
-Watch the instructional video Here.

A6 Firmware Threads & Info:
Battery Drain issues on HP TouchPad (This thread you are reading)
[Fix Guide] How to Reflash the A6 Firmware XDA

How to Reflash the A6 Firmware Method 1:
[Video] How to fix the A6 firmware Battery Drain Problem on the HP TouchPad Method 1

1) Boot to WebOs and in the "Just Type" box enter the following: webos20090606 or upupdowndownleftrightleftrightbastart
-Tap the developer mode icon and slide the toggle to on, then press submit.
-WARNING: Do not enter a password. Just tap submit.
-Plug the USB cable into the HP TouchPad and your PC.

2)Install Java and the Novacom software*
- Note* If you have already previously installed Android with, Java and Novacom drivers, then proceed to step 3.

a]Download Java:

b]Download Novacom Universal Installer:

3)Open windows explorer and go to C:\Program Files\Palm, Inc\Terminal
-Now run the Terminal.bat*
-Note* if you are using a 64 bit OS and get the Error "Windows cannot find Javaw..." you will need to copy the Javaw.eve from C:\Windows\SysWOW64 and paste it into C:\Windows\System32.

4)In the open Novaterm window, select file\connect\Ok
-Now copy and paste the following line into Novaterm and press enter*
PmA6Updater -f -d 0 /lib/firmware/a6_firmware.txt.00
-Note* Do Not! disconnect the TouchPad After starting this procedure.
-Novaterm will tell you "firmware update complete"
- In the open Novaterm window, select file\disconnect\Ok
-Congratulations you have now refashed the A6 Firmware using method 1 and can safely disconnect your HP TouchPad from the USB cable.

How to Reflash the A6 Firmware Method 2:
[Video] How to fix the A6 firmware Battery Drain Problem on the HP TouchPad Method 2

1) Boot to WebOs and in the "Just Type" box enter the following: webos20090606 or upupdowndownleftrightleftrightbastart
-Tap the developer mode icon and slide the toggle to on, then press submit.
-WARNING: Do not enter a password. Just tap submit.
-Plug the USB cable into the HP TouchPad and your PC.

2)On your PC Install Java, Novacom and the WebOSQuickInstall-4.5.0 software*
- Note* If you have already previously installed Android with Java and Novacom, then proceed to step 3.

a]Download Java:

b]Download Novacom Universal Installer:

c]Download WebOSQuickInstall-4.5.0:

3)Run the WebOSQuickInstall-4.5.0 software, note your TouchPad must be connected with the USB cable.
-Click on the Small globe icon located under the plus minus buttons.
-This will take us to a new menu where we will search "preware"
-Click the install button and the Preware app will be installed.
-You may now unplug the USB cable.

4)On the tablet while booted into WebOS navigate to downloads and select Preware.
-scroll down until you see a button appear to continue
-Search for "wterm" and install the app.
-Run wterm, and set a password to give the app Root permissions.
- You can set or change the password by looking for the wterm menu in the upper left corner and select setup.
-Click on New password and enter a simple password like "0000"
-Confirm the password and press "Set Password" button, now hit done and exit.
-Note you can increase the font size by going to wterm preference settings.

5) Now in wterm enter one of the following commands:
PmA6Updater -f -d 0 /lib/firmware/a6_firmware.txt.00
PmA6Updater -a (Note this shorter command flashes two firmwares)
-It should take about 20-30 seconds to complete and will inform you upon completion.
-Congratulations you have now reflashed the A6 Firmware using method 2 and can safely close the terminal and reboot your HP TouchPad.
 

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Since the release of J.C. Sullins latest experimental CM10 rom dated 20130304 in which he tried to correct the battery drain issue while the TouchPad is asleep, a whole new situation has arisen that some folks are experiencing really great battery drain, around -3 to -4ma, while others are seeing in the range of -20mA or so. J.C. recently posted this about it:

"I've been developing/testing the low battery drain for several weeks now with minimum drain as mentioned elsewhere. Then, a few days ago, all of sudden, it wouldn't drop below 18-22mA. After checking several things, I decided to check in webOS. Same thing in webOS.

So, on a hunch, I decided to reflash the A6 firmware (see tpdebrick-v004 thread).

Back to normal now.

My explanation: The A6 firmware is a bit flakey and reflashing it's firmware resets some of it's non-volatile memory to a known-good state.

BTW, if you follow the tpdebrick-v004 process, please send me the "typescript" file obtained when you do so."

All of this has created a whole new set of questions and concerns about battery drain and how it is going to be addressed.

I've created this thread to give everyone a place to discuss this and not clog up other threads.
So... I'll report my results.

Tried everything in the book to figure out why I wasn't deep sleeping and getting the 3-5 mA. I was going as low as 19-22 mA. Reflashed ROM, running bare stock and still not getting lower. Didn't want to do the TPDebrick process as my TP has been great... just not deep sleeping down to the levels everyone seems to report.

Tried doing a AcmeUinstall, WebOSDoctor, total wipe in WebOS, and then reinstalled with AcmeInstaller3 and so far I am seeing drops down to about 6 mA.
 

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So... I'll report my results.

Tried everything in the book to figure out why I wasn't deep sleeping and getting the 3-5 mA. I was going as low as 19-22 mA. Reflashed ROM, running bare stock and still not getting lower. Didn't want to do the TPDebrick process as my TP has been great... just not deep sleeping down to the levels everyone seems to report.

Tried doing a AcmeUinstall, WebOSDoctor, total wipe in WebOS, and then reinstalled with AcmeInstaller3 and so far I am seeing drops down to about 6 mA.
Sounds like you have solved the problem. -6ma would be perfectly normal and some spiking will occur. Use battery monitor widget to watch the battery drain during sleep for a day and check your history. It should look like this, post your results here thanks
 

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Yeah, let's not get the cart before the horse. One case is not enough to call it a fix. Maybe J.C. will chime in here and give us his thoughts on whether WebOS Doctor is going to accomplish the same thing as his suggested flashing the firmware for the A6 controller.

Also, I have two 32GB TouchPads. One has been running CM10 since December. After flashing the 0304 rom, at first I thought I was going to get the -3 to -4mA drain, but after several hours it was obvious that I was getting the higher readings, in the 20's range. I decided to clean install CM10 on the second one and so far it has been maintaining the lowest readings. I'm getting around 5% usage per day. However, this is a clean install with no other apps except BMW to keep an eye on the battery. I plan to do a similar install like the first one, which will be install CM9, restore my CM9 backup and then install CM10 over the top of it. If my battery usage remains stable after all that, then I will give WebOS Doctor a try on the one that is getting higher readings. I'll report back with I have all that done.
 

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Looks like with WiFi set to 'NEVER' when sleeping, I get as low as 10 mA. Leads me to believe it is not actually turning off. When I actually flip the toggle to turn off WiFi and then put my TP to sleep... I get down to as low as 4-6 mA.
 

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My explanation: The A6 firmware is a bit flakey and reflashing it's firmware resets some of it's non-volatile memory to a known-good state.
Interesting. Last fall when testing a new Beta version of the MBM HAL for the TP 4G, one of the MBM developers noticed that if any of the A6 alarm settings changed, it would continuously send IRQs and cause battery drain. He developed a kernel patch that would set them back to the default if they changed. I have used this patch in all my TP 4G builds since with no apparent ill effects.

I mentioned it to jcsullins back then, but he had not seen this behavoir. But maybe it was masked by the higher battery drain.

James, you may want to test this patch to see if it addresses this issue. A copy of the patch is attached.

The attached file should not be used to flash / install using recovery (CWM or TWRP). It is a software patch that can be used to modify the kernel code if you are building a ROM for the HP TouchPad.

John
 

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So... I'll report my results.

Tried everything in the book to figure out why I wasn't deep sleeping and getting the 3-5 mA. I was going as low as 19-22 mA. Reflashed ROM, running bare stock and still not getting lower. Didn't want to do the TPDebrick process as my TP has been great... just not deep sleeping down to the levels everyone seems to report.

Tried doing a AcmeUinstall, WebOSDoctor, total wipe in WebOS, and then reinstalled with AcmeInstaller3 and so far I am seeing drops down to about 6 mA.
Same symptom and same remedy. I'm back to my 3-5mA while sleeping.
Took a peek at 11:30, hence the spike.
Woke her up again at 12:50
I've always set my WiFi to "keep WiFi on during sleep - only when plugged in.
 

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Still messing around setting up to run WebOS Doctor. Below is an interesting rundown of when and what the Doctor is doing, note line #9:
  1. WebOS Doctor begins
  2. At 3%, a ramdisk is transferred to the phone, and the phone is rebooted
  3. At 4%, the screen changes to the HP logo
  4. At 9%, the screen changes to a big arrow pointing down to an integrated circuit
  5. Novaterm access is available from 12% onwards
  6. The progress bar advances by 2% increments every 20 seconds or so
  7. If it gets stuck at 52% for more than 30 seconds, it's not going to progress further and you will need to try again.
  8. Around 54% the filesystems are being partitioned
  9. Around 64% the modem firmware is being reflashed
  10. Around 72% the carrier apps are being installed
  11. Around 82% the ROM is being verified
 

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OK I want to make sure I am understanding this correctly and reading I right. Last night I plugged in the Touchpad and turned off the screen. When I woke it up this morning the battery widget read 4mA. I looked at the history and it read 1 every ten minutes all night long. I'll see if I can post a screen shot....... OK I'm not finding the screenshot option with jellybean. How do you take a screen shot with the ROM?
 

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OK I want to make sure I am understanding this correctly and reading I right. Last night I plugged in the Touchpad and turned off the screen. When I woke it up this morning the battery widget read 4mA. I looked at the history and it read 1 every ten minutes all night long. I'll see if I can post a screen shot....... OK I'm not finding the screenshot option with jellybean. How do you take a screen shot with the ROM?
You will not have drain when plugged in, let it sit unplugged.
 

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OK I want to make sure I am understanding this correctly and reading I right. Last night I plugged in the Touchpad and turned off the screen. When I woke it up this morning the battery widget read 4mA. I looked at the history and it read 1 every ten minutes all night long. I'll see if I can post a screen shot....... OK I'm not finding the screenshot option with jellybean. How do you take a screen shot with the ROM?
Are you seeing these results when the TP is unplugged? My TP shows a reading of 1 when it is fully charged and sitting on its touchstone however when it is not on the charger it reads as between -22 and -24ma when in deep sleep.
I am currently trying to figure out if there are any rogue apps that could be causing the drain. Also i do not think the issue of high batt drain is exlusive to cm10 since i am still running one of the 'Latest' cm9 nightlies. So for me, the issue is not cm10 but is present in later builds of cm9 but like i say i am tryin to figure out if it is reated to my setup (app related)
 

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Are you seeing these results when the TP is unplugged? My TP shows a reading of 1 when it is fully charged and sitting on its touchstone however when it is not on the charger it reads as between -22 and -24ma when in deep sleep.
I am currently trying to figure out if there are any rogue apps that could be causing the drain. Also i do not think the issue of high batt drain is exlusive to cm10 since i am still running one of the 'Latest' cm9 nightlies. So for me, the issue is not cm10 but is present in later builds of cm9 but like i say i am tryin to figure out if it is reated to my setup (app related)
1 I think means that it's "fully charged." Mine read 1 last night when I left it on the charger and checked it this morning.

If you are seeing 22 mA or so, then u are in the same boat I was before. I was getting that drain whether I had installed my apps and 1-2 widgets or running bare stock after a flash. I feel like there is something to the poster on the first page talking about the patch.
 

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Are you seeing these results when the TP is unplugged? My TP shows a reading of 1 when it is fully charged and sitting on its touchstone however when it is not on the charger it reads as between -22 and -24ma when in deep sleep.
I am currently trying to figure out if there are any rogue apps that could be causing the drain. Also i do not think the issue of high batt drain is exlusive to cm10 since i am still running one of the 'Latest' cm9 nightlies. So for me, the issue is not cm10 but is present in later builds of cm9 but like i say i am tryin to figure out if it is reated to my setup (app related)
J.C. corrected the code in CM10 that lowered the battery drain in CM10. It would help if
you read the OP where I posted something about this from J.C. Sullins? Also there has been
some discussion of this in the How to install CM10 thread by Rolanddeschain79.

You might want to start reading about here: http://rootzwiki.com.../page__st__2400
 

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Are you seeing these results when the TP is unplugged? My TP shows a reading of 1 when it is fully charged and sitting on its touchstone however when it is not on the charger it reads as between -22 and -24ma when in deep sleep.
I am currently trying to figure out if there are any rogue apps that could be causing the drain. Also i do not think the issue of high batt drain is exlusive to cm10 since i am still running one of the 'Latest' cm9 nightlies. So for me, the issue is not cm10 but is present in later builds of cm9 but like i say i am tryin to figure out if it is reated to my setup (app related)
I get -3-5mA drain in CM10 3/4 ROM.

I still get -28-32mA drain in CM9 3/3 ROM.

If you're getting -22-24mA in CM9, that's pretty darn good.
 

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I get -3-5mA drain in CM10 3/4 ROM.

I still get -28-32mA drain in CM9 3/3 ROM.

If you're getting -22-24mA in CM9, that's pretty darn good.
Ye, TBH i dont let the battery stats stress me. I only found out i was having 22-24ma the other day after i downloaded battery monitor widget but it honestly doesnt interest me so long as my TP gets me through an average day of moderate use. I wouldnt have a clue what my stats were before using this app so im not really compairing it to any other previous build. I did ponder the notion that some rogue app was at fault however i have given up looking for a culprit. It is what it is and cm9 nightly is a great rom in every respect. Most times my TP sits on its dock so the battery has never given me any cause for concern.
 

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Discussion Starter · #19 ·
Ye, TBH i dont let the battery stats stress me. I only found out i was having 22-24ma the other day after i downloaded battery monitor widget but it honestly doesnt interest me so long as my TP gets me through an average day of moderate use. I wouldnt have a clue what my stats were before using this app so im not really compairing it to any other previous build. I did ponder the notion that some rogue app was at fault however i have given up looking for a culprit. It is what it is and cm9 nightly is a great rom in every respect. Most times my TP sits on its dock so the battery has never given me any cause for concern.
Like syncron said, if you are getting 22-24mA running CM9, you are getting way better than most. This discussion is about the battery usage in the latest version of J.C. Sullins CM10. The Holy Grail of battery usage on the TouchPad running Android is to get it closer to what one would get running WebOS. It has never been any where close to WebOS up until the 0304 rom, but as always, it's one step forward and two steps backwards. The A6 controller firmware seems to be the bane of our existence.
 

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Discussion Starter · #20 ·
Well I finished with my experiment to see if running WebOS Doctor would correct the battery drain issue, -4 to -5mA vs. -20 to -25Ma that folks are reporting. I uninstalled Android, ran the Doctor and then clean installed CM10. I did not install any other apps except Battery Monitor Widget and I am still getting the higher battery drain. Don't know if I am willing to tackle J.C. Sullins method of reflashing the A6 firmware that he said corrected it on his TouchPad. From what I understand, one would have to go through the whole debricking process to accomplish this. Maybe if J.C. could create a script that just flashes the A6, it might be worth a try. And for the record, my other TouchPad seems to be getting the lower battery drain. Go figure!
I let it sleep for over two days and still had 85% battery left.
 
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