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Hi all
Installed 8.6.5.19 last night. My batteries were 97% TF and 92% dock - did full switch off incl setting airplane mode BUT left tf and dock connected. This am - 12 hrs later - tf is 100% and dock 65%.
I was hoping that this latest firmware might improve the dock battery loss when connected but fully switched off not sleep mode ?
For info - my tf and dock are both very early B40's - I never bothered with the rma/hardware fix - my personal workaround is simply to take tf off the dock when not using!!!!!!
Any advice/comments please?
I have the same model dock as you and you should send it in for RMA. Since i got mine back 3 days ago i Can leave it docked and the battery barely drains while making the TF101 look stylish and complete just sitting there or charging. It really makes a huge difference.
Removing the dock just to conserve power is a small workaround without any real benefits . You still need to carry around the dock if your traveling around outside your WiFi zone or just visiting family. Its one extra step to something that can easily be fixed by sending it in and having the unit behave as it should. All that does is ignore the issue, not a real fix. Its like having a slow ice maker in your refrigerator that you start not to use as much ice in your drinks to avoid the problem of getting a repair man to fix it.Since i got mine back im extremely happy with it and the battery power drain is nonexistent.
shirleywhite said:
I was hoping that this latest firmware might improve the dock battery loss when connected but fully switched off not sleep mode ?
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If it could've been fixed in the firmware, don't you think Asus would've done so, rather than having docks RMA'd for repair?
The *only* solution is to RMA your dock. I did with mine, and now it works brilliantly.
Regards,
Dave
Yep you need to RMA, ASUS has already stated they cant fix the early docks via software/firmware.
You should definitely get it RMA-ed. With the new firmware, I left my TF docked for 20+ hours sitting in my car the other day. When I came back and turned it on, cpu spy reported 98% deep sleep. Only lost may be 8% or so of battery.
As stated the dock has a hardware flaw and needs RMAing. I have a B40 dock (B30 tablet) and once RMAed the dock works flawlessly.
P
goodintentions said:
You should definitely get it RMA-ed. With the new firmware, I left my TF docked for 20+ hours sitting in my car the other day. When I came back and turned it on, cpu spy reported 98% deep sleep. Only lost may be 8% or so of battery.
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thats is quite impressive
uploder said:
thats is quite impressive
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I was very surprised also. The new firmware actually allowed for deep sleep due to the fact that I can set the damn wifi to turn off when the screen is off and not have to restart.
So, I guess the goal should be to do something so the damn thing will go into deep sleep.
Thanks for the replies everyone - much appreciated. So RMA it is.
A quick further question please. ( aimed at the uk based amongst you) I just looked at asus uk rma page - they ask you to pick a form from a choice of Notebook/pda/eeepc/lcd. I presume the TF is eeepc rather than notebook!!! ( though in the dock it does look like a notebook to me!) More seriously - do I send back the dock alone? or is it TF AND dock - I have seen conflicting advice on other forums.
Thanks again.
Yeah, the Transformer is eeepc and you only send the dock back
Hi
I have a TF700T, unlocked, TWRP and CROMI 3.0.4.
My battery meter is acting weird. For example I recharged both my tab and the dock this afternoon. I unplugged them around 16:30. I've been using my tab for the last few hours (it's now past midnight), not all the time, but quite often. The meter on the tab is still showing 100%. The one for the dock is showing 94%. This is not the normal behavior of my tab and it's been doing that since I unlocked and installed TWRP and CROMI. Before, it would start to go down almost immediately, and would start recharging only at 70%, like it's supposed to.
Last time it stayed at 100% for a while and then started to drain very quickly, and then stabilized and started to act normally.
I'm trying to understand whatcould be the problem. Last time it got "stuck" like that I went to recovery and TWRP was also showing 100% power left. So it's not CROMI. But it's something... Anybody else with the same problem? Or anyone got a solution, an idea? Because I'm worried this will get worse...
Thanks
You could try clearing the battery stats. I think TWRP has the option to do it, not sure about CWM.
Ok thanks sdbags, I'll look into that...
Is there an ideal moment to do that? After a full recharge?
Usually you do 100% charge, clear stats, reboot let it get back to 100% and unplug but to be honest it probably doesn't really matter.
You'll know fairly soon if you still have the problem.
I just checked mine and it started with tablet battery until down to 89%, then dock battery kick in maintain the tablet battery around 89-90%.
The dock shouldn't recharge the tab unless it reaches 70% or lower. At least it's what it was doing before, and what's documented as normal behavior. Since my tab spends 99% of its time docked, I don't know how it would behave undocked...
Looks like it solved the problem for now. Thanks sbdags!
Sent from my SGH-I747M using Tapatalk 2
Well, unfortunately, it isn't solved. When I deleted batterystats.bin it went back to "normal" at first, the tab was fully charged and it started to go down almost immediatly after I unplugged it. But yesterday it died on me while the gauge was still showing a little bit less than 30%!!! I did a full charge last night, and it's back to its old tricks: stucked at 100% for the last 8 hours (overnight).
This is very annoying... Is there anything I can do to recalibrate the battery gauge?
And why is this happening? I didn't have this problem when locked with stock ROM and recovery... I'm not complaining, I just want to understand and maybe try to fix this! Thanks!
acme99 said:
Well, unfortunately, it isn't solved. When I deleted batterystats.bin it went back to "normal" at first, the tab was fully charged and it started to go down almost immediatly after I unplugged it. But yesterday it died on me while the gauge was still showing a little bit less than 30%!!! I did a full charge last night, and it's back to its old tricks: stucked at 100% for the last 8 hours (overnight).
This is very annoying... Is there anything I can do to recalibrate the battery gauge?
And why is this happening? I didn't have this problem when locked with stock ROM and recovery... I'm not complaining, I just want to understand and maybe try to fix this! Thanks!
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Could be a battery hardware issue? Sounds like it's not reporting its current and voltage correctly.
You need to get some battery monitoring apps on it so you can see what is really going on.
sbdags said:
Could be a battery hardware issue? Sounds like it's not reporting its current and voltage correctly.
You need to get some battery monitoring apps on it so you can see what is really going on.
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Could be, but it's weird that it started just after I decided to unlock. It was fine the first 4 months of its life...
Any battery monitoring app you recommend? There are a few on Google Play... I have Battery Widget Reborn, it does some monitoring, but it doesn't provide a lot of information. I'm sure there is an "ultimate battery app" or something... Any suggestion will be greatly appreciated!
acme99 said:
Could be, but it's weird that it started just after I decided to unlock. It was fine the first 4 months of its life...
Any battery monitoring app you recommend? There are a few on Google Play... I have Battery Widget Reborn, it does some monitoring, but it doesn't provide a lot of information. I'm sure there is an "ultimate battery app" or something... Any suggestion will be greatly appreciated!
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Try battery monitor widget. It does everything you need.
https://play.google.com/store/apps/details?id=ccc71.bmw&feature=nav_result#?t=W251bGwsMSwyLDNd
sbdags said:
Try battery monitor widget. It does everything you need.
https://play.google.com/store/apps/details?id=ccc71.bmw&feature=nav_result#?t=W251bGwsMSwyLDNd
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Ok, thanks... Will try that and report!
Ok... So I did some testing... My tab is shutting down (more like crashing) at 28% and showing 6561 mV. I then have to plug it in and wait for 5-8 minutes before it will allow me to boot it.
So I plugged it in... It reached 100% at 8169 mV... But then, it continued to charge. As of now, it is at 8296 and still going up as I'm writing this!!
This issue is the same as issue #2 in this thread:
http://forum.xda-developers.com/showthread.php?t=2090826
Now, I don't know, but it look suspicious to me that this problem started when I installed TWRP and CROMI. Could it be related, somehow??
Additionnal details:
http://code.google.com/p/android/issues/detail?id=41224
acme99 said:
Additionnal details:
http://code.google.com/p/android/issues/detail?id=41224
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What happens if you wipe the battery stats again?
The only other thing I can recommended is a total wipe, reflash Asus stock to redo the bootloader, TWRP and reflash CROMI. Others don't have this problem so it is something particularly to your setup.
All those posts you linked are pointing to the 4.2.1 update causing the issue. As we only have 4.1.1 I can't see any relationship unless Asus injected some 4.2.1 code into their latest update which seems unlikely.
sbdags said:
What happens if you wipe the battery stats again?
The only other thing I can recommended is a total wipe, reflash Asus stock to redo the bootloader, TWRP and reflash CROMI. Others don't have this problem so it is something particularly to your setup.
All those posts you linked are pointing to the 4.2.1 update causing the issue. As we only have 4.1.1 I can't see any relationship unless Asus injected some 4.2.1 code into their latest update which seems unlikely.
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I wiped the stats yesterday. Looks like it doesn't do much.
I'll go ahead and reflash stock...
Thanks!
acme99 said:
I wiped the stats yesterday. Looks like it doesn't do much.
I'll go ahead and reflash stock...
Thanks!
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I suggest you should do a full wipe and reflash cleanrom and kernel. This way you can eliminated all the possiblility with software and pin it on hardware.
acme99 said:
Could be, but it's weird that it started just after I decided to unlock. It was fine the first 4 months of its life...
Any battery monitoring app you recommend? There are a few on Google Play... I have Battery Widget Reborn, it does some monitoring, but it doesn't provide a lot of information. I'm sure there is an "ultimate battery app" or something... Any suggestion will be greatly appreciated!
Click to expand...
Click to collapse
I have the same problem with my battery meter, and just like with you, it started when my TF700T was almost exactly 4 months old. The batteries (dock and tablet) have to be close to drained. I've been using the tablet without batteries for many hours, both yesterday and today. But my tablet battery is showing 100% and the dock battery is at 95%. That has to be wrong.
I have GSam Battery Monitor Pro. It can only tell me about the tablet battery (it's blind to the dock battery). Yesterday when I looked at this, it was telling me that the screen used no power. I'm looking at it now and it says that screen is using 68.6% of the power - that's more like it. But it's weird that yesterday the number was zero. It tells me that the unit has only been unplugged for 5 seconds, and has been telling me that since I unplugged it yesterday. GSam usually saves history, but not in this case because it thinks the unit has only been running on battery power for 5 seconds.
I also have a battery widget that is dual-battery aware. It has a history chart, but it doesn't tell me much. It shows the tablet battery at a constant level of 100% with no dips, and the dock battery very slowly dropping from 100% to 95% over the last two days. This is just wrong.
What's been happening is that the tablet will suddenly shut down when I think it's charged, and then I can't turn it on. I didn't realize what was wrong until I discovered that if I plugged it in for a while, I could turn it on again. Obviously the battery is draining completely, but the meter is incorrect. Also, draining the battery completely then recharging to green (which I hope still means "complete charge") has done nothing to recalibrate the battery.
I'm afraid this is a hardware problem. I guess I need to contact Asus?
I'm also having problems with constant browser crashes - doesn't matter what browser it is, I've tried them all. In general, this tablet has been a huge and expensive disappointment.
Edit: I'm running ICS 4.0.3 stock, rooted but not unlocked. I don't want to upgrade to JB because I need the volume booster app. I've read that the volume problem is just as bad under JB but the volume booster apps don't work (nor do many other programs I use). There is nothing in JB I need. From what I've read, people running JB have all the same browser crash problems, battery meter problems, etc.
permutations said:
I have the same problem with my battery meter, and just like with you, it started when my TF700T was almost exactly 4 months old. The batteries (dock and tablet) have to be close to drained. I've been using the tablet without batteries for many hours, both yesterday and today. But my tablet battery is showing 100% and the dock battery is at 95%. That has to be wrong.
I have GSam Battery Monitor Pro. It can only tell me about the tablet battery (it's blind to the dock battery). Yesterday when I looked at this, it was telling me that the screen used no power. I'm looking at it now and it says that screen is using 68.6% of the power - that's more like it. But it's weird that yesterday the number was zero. It tells me that the unit has only been unplugged for 5 seconds, and has been telling me that since I unplugged it yesterday. GSam usually saves history, but not in this case because it thinks the unit has only been running on battery power for 5 seconds.
I also have a battery widget that is dual-battery aware. It has a history chart, but it doesn't tell me much. It shows the tablet battery at a constant level of 100% with no dips, and the dock battery very slowly dropping from 100% to 95% over the last two days. This is just wrong.
What's been happening is that the tablet will suddenly shut down when I think it's charged, and then I can't turn it on. I didn't realize what was wrong until I discovered that if I plugged it in for a while, I could turn it on again. Obviously the battery is draining completely, but the meter is incorrect. Also, draining the battery completely then recharging to green (which I hope still means "complete charge") has done nothing to recalibrate the battery.
I'm afraid this is a hardware problem. I guess I need to contact Asus?
I'm also having problems with constant browser crashes - doesn't matter what browser it is, I've tried them all. In general, this tablet has been a huge and expensive disappointment.
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Click to collapse
I feel your frustration, I have seen more and more people with this issue. Well, we could say that either software or hardware, (not every situation is the same), so usually I recommend to do a factory reset then reflash a full Asus firmware, if the issue stills existed, then we can assume it's hardware issue. At this point, we can give Asus tech support a call.
buhohitr said:
I feel your frustration, I have seen more and more people with this issue. Well, we could say that either software or hardware, (not every situation is the same), so usually I recommend to do a factory reset then reflash a full Asus firmware, if the issue stills existed, then we can assume it's hardware issue. At this point, we can give Asus tech support a call.
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Click to collapse
Thanks for your reply. Have you heard back from anyone who has done a factory reset and reflashed the Asus firmware? Has anyone reported the problem going away after that?
The other thing I'm worried about is that it's a hardware problem that Asus doesn't know how to fix because they don't yet know what's causing it. I can't recall anyone saying they've found a solution to this. I've only seen reports of the problem.
I have other serious problems with this tablet, too. It runs short of memory all the time, though this isn't supposed to happen on Androids. I often have to manually clear memory to view screenshots in the Play Store. And the browser is constantly stalling, freezing, and crashing - every browser. I've tried more than 5 of them. This is especially inconvenient for me, since I make heavy use of the browser on the tablet.
I keep thinking of that pressure-sensitive Samsung tablet I almost bought instead...
Both running stock or CleanROM I have the issue that when I leave the tablet undocked my battery will last days or weeks with the screen off. When I connect the dock and turn off the screen the dock battery will drain to 0% within a couple days and the tablet battery level would be lower than if I had left it undocked.
I've installed better battery stats and deep sleep batter saver and the device is verified in deep sleep 90% of the time.
Any suggestions?
Think that is how it designed to work. Dock will keep trying to top up the tab when it drops below 70% and then when the dock battery runs out it requires extra juice from the tab to keep it alive.
sbdags said:
Think that is how it designed to work. Dock will keep trying to top up the tab when it drops below 70% and then when the dock battery runs out it requires extra juice from the tab to keep it alive.
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I think my question may have not been clear. One should assume that the addition of a second battery should increase the overall runtime of the device not decrease it. Instead of getting the extra hours of battery life I am getting less battery life with the dock attached.
Same problem
I have the exact same problem. Ive got all the right apps and settings suggested from XDA and still my battery drains when doc is connected.
madhits45 said:
I have the exact same problem. Ive got all the right apps and settings suggested from XDA and still my battery drains when doc is connected.
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Same problem since the 4.2 update...
WoozyBE said:
Same problem since the 4.2 update...
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Ditto, same here.
I'm starting to think this is a common problem, and not just some random one that I was having...
So I installed better battery stats and it is indeed the dock that's draining both it's own battery as well as the infinity's battery. I think I had about 4 hours of asusdec_wake lock coming from the dock when I let it go to sleep, but the strange thing is it only appears to happen after about half an hour of sleep before it kicks in for me (I should point out btw that I'm using a tf201 dock and running cromi-x 4.4 with _that's kernel). After removing the dock from my infinity, I no longer got the battery drain from my tab, but when my tab was docked, the keyboard seemed to drain like crazy along with the infinity, but only after being asleep for about half an hour to an hour. I suppose this is just a 4.2 bug that ASUS might be able to release an update on, or sbdags, as it seems he's done a better job with bug fixes than ASUS has. :laugh:
Paulitics said:
I'm starting to think this is a common problem, and not just some random one that I was having...
So I installed better battery stats and it is indeed the dock that's draining both it's own battery as well as the infinity's battery. I think I had about 4 hours of asusdec_wake lock coming from the dock when I let it go to sleep, but the strange thing is it only appears to happen after about half an hour of sleep before it kicks in for me (I should point out btw that I'm using a tf201 dock and running cromi-x 4.4 with _that's kernel). After removing the dock from my infinity, I no longer got the battery drain from my tab, but when my tab was docked, the keyboard seemed to drain like crazy along with the infinity, but only after being asleep for about half an hour to an hour. I suppose this is just a 4.2 bug that ASUS might be able to release an update on, or sbdags, as it seems he's done a better job with bug fixes than ASUS has. :laugh:
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Is sbdags a custom rom? I'm assuming so. Also your use of the tf200 dock should make no difference. Its been proven besides a firmware change and a slight color change the 2 docs are pretty much the same. I also believe this maybe a 4.2 issue however I have seen this before the latest update with my doc. It does appear to kick in after about 30 mins to an hour for me also. I am trying out a new app that I hope will help called DS battery saver. Ive tried others before to no avail but I figured why not give this one a try. I keep my infinity on the doc all the time so I hope they can fix this issue...
madhits45 said:
Is sbdags a custom rom? I'm assuming so. Also your use of the tf200 dock should make no difference. Its been proven besides a firmware change and a slight color change the 2 docs are pretty much the same. I also believe this maybe a 4.2 issue however I have seen this before the latest update with my doc. It does appear to kick in after about 30 mins to an hour for me also. I am trying out a new app that I hope will help called DS battery saver. Ive tried others before to no avail but I figured why not give this one a try. I keep my infinity on the doc all the time so I hope they can fix this issue...
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sbdags is the creator of the awesome custom rom, clean rom inheritance xenogenisis, he's also the second poster in this thread. I'm currently running his 4.4 rom and it's incredible! (Thank you @sbdags btw for the amazing rom, you'll get a kind donation once I can get this internship thing figured out :highfive I kind of figured that having a 201 dock wouldn't make a difference, but I just thought I should mention it. As for the draining of the battery, I think we can just assume it's a 4.2.1 bug that can hopefully be patched by ASUS or by one of the awesome developers. I've also tried DS battery saver, and I think it told me the culprit was screen on, but after installing better battery stats, I got a recurring wake lock from the asusdec_lock. Oh well, it's not the worst thing ever right now to just undock the tablet, or remember to shut it off while docked.
Paulitics said:
sbdags is the creator of the awesome custom rom, clean rom inheritance xenogenisis, he's also the second poster in this thread. I'm currently running his 4.4 rom and it's incredible! (Thank you @sbdags btw for the amazing rom, you'll get a kind donation once I can get this internship thing figured out :highfive I kind of figured that having a 201 dock wouldn't make a difference, but I just thought I should mention it. As for the draining of the battery, I think we can just assume it's a 4.2.1 bug that can hopefully be patched by ASUS or by one of the awesome developers. I've also tried DS battery saver, and I think it told me the culprit was screen on, but after installing better battery stats, I got a recurring wake lock from the asusdec_lock. Oh well, it's not the worst thing ever right now to just undock the tablet, or remember to shut it off while docked.
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I'm not so sure i want to try custom roms yet. I hate not knowing if its the rom or my tablet when trouble arises. I wonder what it could be in his rom that makes this issue go away or does it not? Was not sure if you were saying it cleared the problem up or not.
I have better battery stats & its telling me asusdec_wake was on for 11h 50min. Not sure what that is, assuming it woke the tablet up. Sounds similar to yours though. I do know the google services was what always shows in the battery stat app by asus. I hate to undock as it involves removing my whole case which protects both doc & tablet.
madhits45 said:
I'm not so sure i want to try custom roms yet. I hate not knowing if its the rom or my tablet when trouble arises. I wonder what it could be in his rom that makes this issue go away or does it not? Was not sure if you were saying it cleared the problem up or not.
I have better battery stats and so far it has only reported no stats, so not sure what is draining my tablet. I do know the google services was what always shows in the battery stat app by asus. I hate to undock as it involes removing my whole case.
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Oop, yeah, sorry, I probably should have made that clear that the problem is still present in Clean Rom Xenogenesis 4.4 and most likely with Stock Asus 4.2.1, so flashing a custom Rom won't do anything to solve it to my knowledge, so I wouldn't worry about that. In order for better battery stats to do it's stuff, you need to set it to "since last boot" and then just restart the tablet. At least, that's what I did to make it work. After that, better battery stats will start collecting data about what's waking up your tablet from sleeps, but it's still kind of hard to pinpoint what app is causing the issue.
What we know for sure is that it's something to do with Android 4.2.1 and being connected to the dock while the tablet sleeping is causing it to drain both the batteries of the dock and the tablet, but this doesn't occur when it's disconnected from the dock, and the tablet sleeps just fine. Also not really sure if this is relevant, but when I had my tab sleeping, it went into deep sleep, but after about half an hour of deep sleep, it had that asusdec_wake lock and then it bumped up to I believe 510 mhz for the rest of it's sleeping time. So, maybe it's a stock kernel thing?
Here's what I think is happening.
Asus don't allow deep sleep whilst the device is charging. When using the dock the device thinks is it is charging so doesn't deep sleep. The devices keeps waking, drawing charge from the dock which eventually runs down.
sbdags said:
Here's what I think is happening.
Asus don't allow deep sleep whilst the device is charging. When using the dock the device thinks is it is charging so doesn't deep sleep. The devices keeps waking, drawing charge from the dock which eventually runs down.
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Click to collapse
That could be a reason, I'm just confused as to why ASUS would add this, as I never had this problem in 4.1, but after 4.2 it's happened every time I had my tablet in the dock and let it sleep for long periods of time, and it's not cromi 4.4 as it appears to be the case with stock as well. Also, not only the dock drains, but the tablet drains too, but it's only when docked. When I'm not docked, I go about 1% per hour drain, but when I am docked, I'll go about 10 - 15% drain. Oh Asus, you crazy!
Could this be related to the option to wake-up by pressing a key on the dock, by any chance? I could just be spouting rubbish (which wouldn't be a first), but it seems to me that such a setting would require some kind of wake process.
Do you have it enabled?
I vaguely recall there being a similar issue with a fairly similar-named process a while back. I think it was the wakeup setting back then, but it could also have been Maps and Location Services.
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ShadowLea said:
Could this be related to the option to wake-up by pressing a key on the dock, by any chance? I could just be spouting rubbish (which wouldn't be a first), but it seems to me that such a setting would require some kind of wake process.
Do you have it enabled?
I vaguely recall there being a similar issue with a fairly similar-named process a while back. I think it was the wakeup setting back then, but it could also have been Maps and Location Services.
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Click to expand...
Click to collapse
I froze maps and turned off all location access and turned off all wireless functions (location, bluetooth, wireless, etc.) from my tab and it still occurs. It's possible that it could be the asus power saving thing for the dock which is the only real thing I have enabled for the dock, but I'm away from my tab at the moment, so I can't exactly test this theory yet.
sbdags said:
Here's what I think is happening.
Asus don't allow deep sleep whilst the device is charging. When using the dock the device thinks is it is charging so doesn't deep sleep. The devices keeps waking, drawing charge from the dock which eventually runs down.
Click to expand...
Click to collapse
Any idea how to fix?
Paulitics said:
... It's possible that it could be the asus power saving thing for the dock which is the only real thing I have enabled for the dock, but I'm away from my tab at the moment, so I can't exactly test this theory yet.
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Click to collapse
Based on my observation mentioned option has no infuence on dock draining problem.
Confirmed Dock Drain
The battery drain is happening to me as well. I couldn't figure out why the stupid thing kept going dead.
Not happy! It's just another problem with this tablet. I wanna like it, but it's one thing after another!
-- ok, venting over --
Anyone find a solution yet? Downgrade the OS?
ryanbadowski said:
The battery drain is happening to me as well. I couldn't figure out why the stupid thing kept going dead.
Not happy! It's just another problem with this tablet. I wanna like it, but it's one thing after another!
-- ok, venting over --
Anyone find a solution yet? Downgrade the OS?
Click to expand...
Click to collapse
I believe asus is releasing a new update for our tab in a couple weeks. Over on the tf300 forum, I heard they got a new update that I'm not entirely sure what it fixed, but it may or may not have fixed the battery issue, I'll have to look into that. So I would wait before jumping the gun and downgrading, but that's just me, it's a free country after all.
But as for now, there is no fix that I'm aware of.
Sent from my HTC EVO LTE using xda app-developers app
No such problems here - yesterday evening 91%+91%, today morning 89%+89%. Stock deodexed 4.2.1 ROM with _that2 kernel and some apps removed.
Hi folks,
I've been struggling for weeks to figure out why my TF300T started draining battery so quickly during sleep (e.g., 20-30% overnight). After lots of research, setting tweaks, use of diagnostic and battery-saving apps, having my SD card in vs out, hard reboots, factory resets, etc. it seems the problem is simply that the unit generally does not enter deep sleep. Furthermore:
Using Deep Sleep Battery Saver to try and force it to deep sleep
Using CPU Spy to view time in deep sleep and
Using GSam Battery Monitor to view time in wakelock
it appears that if my unit plugged in either via the charging cable or into the dock and I have DS Battery Saver working, the unit goes happily into deep sleep as logged by CPU Spy. If, however, the unit is not plugged in it will get no more than a few seconds in deep sleep, if any, and the elapsed time instead will accrue to time kept awake due to "battery_cable_event" as shown in View Kernel Wakelocks using GSam Battery Monitor.
Googling "battery_cable_event" and related terms did not get me very far. I did find a thread on the XDA forums where someone speculated that this process was causing them the same problem (i.e., preventing deep sleep), but other than 1 other person saying they had the same issue, there was nothing more about it I could find.
Does anyone have any information at all about what might be going on here or a potential solution? My tablet is rooted but unlocked and stock ROM. Is it possible that a custom ROM would not have this issue? I can of course provide more info on what I've done but I didn't want to get too long-winded. I'll just end for now by pointing out that my tests have been done even fresh after a factory reset with no apps run other than the above-mentioned ones so I could see the numbers. It does not appear that I have a draining apps issue, that is.
Thanks very much in advance to the community for any assistance.
--Foobius Bahr
Just an update: I talked with ASUS tech support and the fellow was actually fairly knowledgeable and as helpful as I could expect under the circumstances. He understood all of what I tried and did not suggest a bunch of silly things to try. He says there is no record of anyone contacting them with a problem related to battery_cable_event and that he thinks it means a chipset problem, i.e., hardware, since testing right after a factory reset didn't help. Unfortunately, since I bought my tablet in June 2012 it is out of warranty, so I am out of luck. The info is getting passed up in case it's possible that this kernel process could be misbehaving for a reason that can be fixed without having to send it in and have the motherboard replaced. Doing that would cost almost as much as buying one of these today.
If anyone has suggestions I'm all ears because I'm stuck with the tablet and a dock and the former is out of warranty anyway.
tf300t
Hi friend, i have same problem. Only thing that helped was airplane mode. On 4.1 my tf go to "sleep of death" and now on 4.2 he wont sleep
Hope this will work for you too.
Thanks, all. My sort-of workaround is that when I have the tablet plugged into the dock that counts as "plugged in" so I just try to have it docked whenever I want it to sleep so it doesn't drain extra fast. This is not a solution to the problem, but doing the best I can with what I've got.
Cheers.
I installed Cromi-X in hope that it will fix the sleep problem, but alas, same old.
I'll be trying a newer version, but would like some input on what could be the problem.
Currently I'm on Crombi-k
kernel -3.1.10-that10+
Without sleep the tablet is unusable, the battery has already shat itself after all the discharging.
Please help!
You gotta look at what you have installed. Use Wakelock Detector and/or Gsam Battery Monitor to examine your setup.
Just yesterday I woke my TF700 on the latest CROMBi-KK from sleep after at least a week of not using it (it was not shut down but WiFi was off) and I had 90% of battery left.... Couldn't believe it...
berndblb said:
You gotta look at what you have installed. Use Wakelock Detector and/or Gsam Battery Monitor to examine your setup.
Just yesterday I woke my TF700 on the latest CROMBi-KK from sleep after at least a week of not using it (it was not shut down but WiFi was off) and I had 90% of battery left.... Couldn't believe it...
Click to expand...
Click to collapse
It's a kernel bug introduced in the last Asus update.
It won't sleep if it is attached to the dock, simple as that.
Since the update I've been using is as an expensive paperweight.
I tired Crombi in hopes it would fix it, but alas no hope.
it didn't affect everyone but a lot of people had their tablets crapped.