Develop Bugs

[Q] Force WiFi to stay active when screen is off?

Hi everyone!
I'm using OpenDesire 4.0.4, and while it's more or less the perfect ROM for me, I'm getting a little annoyed at the WiFi. As the ROM is based on CyanogenMod, it has the same WiFi behaviour: When the screen turns off, the WiFi enters power saving mode, regardless of the apps that are active at the time, or the amount of traffic over WiFi at the time.
The problem here is that any application that's using WiFi pretty much just stops as soon as you turn the screen off.
1. Sipdroid during a call: Massive packet loss as soon as the screen turns off. You may hear a garble or two, but nothing intelligible.
2. SwiFTP and other FTP servers: Connecting to the FTP server and navigating to folders takes ages when the phone is in standby. Transferring files is more or less impossible (times out)... Everything's fine when the screen's on. If you transfer a big file and turn off the screen during the transfer, you basically pause the transer - turn the screen back on and the transfer goes back to full speed
3. Market: If you turn off the screen while a lot of apps are going to download, like after pressing "Update all" for a few apps, more often than not they'll just fail in the background.
Now, I could beg and ask the ROM developers (Kali for CyanogenMod on Desire, or AdamG for OpenDesire) to just change this behaviour, but it seems that most people are happy with the situation, as it causes the WiFi to use very little battery on standby... so I'm asking if anyone knows how I could change this myself. Is it even possible to do this at runtime without baking it into the ROM directly?
Or am I SOL until (or rather unless) AdamG or Kali takes pity on me?
I'd love to hear some input - hell, maybe I'm just doing it wrong ... Thanks in advance!
PS: Yes, my WiFi Sleep Policy is set to Never, and the Desire DOES stay connected when the screen is off. Just in a very low power mode...
-edit- Should have searched, sorry: http://forum.xda-developers.com/showthread.php?t=752856
-edit2- Looks like there really isn't a fix for this... Anyone found a way to completely disable PSP on the Desire/Nexus WiFi?

I'm on the same ROM as yourself. What value is your "screen-off lock screen delay" set to?
In my observations, the transfer in the state you mention still persists albeit at a very slow rate and the WiFi chip is certainly placed in the LOW power state, although on.
I'm unaware of any workaround but what I use myself when transferring bulk 1-7GB files through WiFi from my PC/Laptop, which is to change the value of the screen lock delay at screen off under Settings>OpenDesire>User Interface>(last option) to a high figure, like 10-30m, depending on how long I'm expecting the transfer to take. It's a trade-off but you'll still save over 95% of the power since your screen is off but the WiFi/SD/CPU remain working as when the screen is on. Maybe you've tried this already?
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- Sent via my HTC Desire -

That's not a bad idea... brb testing .
-edit- Didn't work
As soon as the screen times out, my transfer speed drops to nearly 0 - even with the lock delay set to 30m... :'(

OK, that's confusing. I'll be back by tonight or morning... I have much testing to do on this since for sub-20mins, my connection runs plus 200Kbps according to the PowerTutor log in such a state. Usually it would drop to 0.3-8Kbps when the screen switched off.
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- Sent via my HTC Desire -

th3 said:
OK, that's confusing. I'll be back by tonight or morning... I have much testing to do on this since for sub-20mins, my connection runs plus 200Kbps according to the PowerTutor log in such a state. Usually it would drop to 0.3-8Kbps when the screen switched off.
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- Sent via my HTC Desire -
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Mine drops to practically 0. So low that due to overhead, FTP transfers pretty much stop completely...

I've seen that the linked kernel module provides a temporary workaround for you guys now. During the course of my testing your concern I basically found my WiFi module isn't ever turning off nor switching any connections off - it's always awake and can always transfer some data. Even in the LOW state it is connected at 24Mbps. Whatever I did I couldn't change this behavior on 4.0.4. Time for another wipe...
OD has many user preferred options baked in working fine alongside the conventional options so it'd probably be best suited for a toggle of this feature to be implemented for you guys (if at all possible). Not sure if that WiFi module power state behaviour is write-able and changeable on-the-fly before a reboot, should be, as it's only changing a hardware state.
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- Sent via my HTC Desire -

The new Wifi module is working perfectly here. No more performance problems, and my power consumption has actually gone DOWN. Probably because I have a bunch of connected apps running in the background and PSP is very inefficient for that.
Also, the delays in Chrome To Phone and Appbrain web installs are gone...
I'm loving this fix...

[Q] Strange Arc S signal / battery drainage problem

I bought myself Arc S, it came loaded with .62 firmware. On my initial run, battery ran for about a day, later on for two or maybe even three days. Then I started to work in another country. As far as I remember, battery life was the same, even though the network was not (where I work now is 2G only, in my home country 3G). Then one day messed around with a Xperia S apps, did a stupid mistake and started to get force closes with launcher. I had to repair software.
Since the software reinstallation, my battery life degraded to less than a day without even touching it. Therefore I installed Battery Monitor Widget, to see, what is going on. I noticed, that battery drainage is about 70-110 ma in average, as far as I know, it should be much lower (under 30ma?). I have to say, that I tested this with .62, .42 firmware and it's all the same. When I turn phone to airplane mode, energy consumption lowers to under 5ma - which is normal i guess.
It began to bug me even more, as we bought small alarm clock with radio. I noticed, that when this alarm clock is on, despite from 2 other phones our room, my Arc S is the only phone, which makes this kind of searching-for-signal or calling speaker interference (noise coming out of speaker). My phone does that all the time, even in idle mode. This can be also heard when we have our TV on on. So, if I don't want to hear that, I have to unplug the alarm clock or put my phone into airplane, which sucks.
I asked a guy next building, if he has the same problems with Arc S, and he says that his phone can live up to 5 days with one charge (is connected to the same network provider), so I guess it is not network related?
I wonder, is there a possibility, my phone's radio is broken somehow? Or it was faulty, and firmware reinstall somehow broke it to the end? So that is draining battery all the time - looking for signal? Any way to fix this? Flashing different base bands did not help, tried that already...anybody knows a fix for this, apart from returning it to my provider - since I'm 4 months away from my country
Anybody heard for any similar problem with Arc S?
Thanks in advance! (if needed, I can also post battery usage screenshot, but I think it's not much of a help)

lyteo said:
Then I started to work in another country. As far as I remember, battery life was the same, even though the network was not (where I work now is 2G only, in my home country 3G)
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That seems like the issue here if I'm understanding you correctly. If you don't have 3G service where you currently are, and you did not turn off 3G, your phone will constantly try and find a 3G signal.
Airplane mode fixing the issue makes this seem even more likely. Try disabling 3G and see if it helps.

Problem is, that's what I did almost instantly when I came here, I set it to GSM only. One thing I noticed right now, when I check into About phone, under Mobile network type, my Arc S has: UNKNOWN, where my friends HTC says EDGE. Maybe here lies a problem? Why my phone can't detect network type?

Incredibly, I found the reason for my drainage and signal search. When I came into that country where I work now, my provider offered me to turn off data transfer (provider turns it off for me). Of course I did not want any unintended data transfer, so I turned it off by sending sms to service number. After I reinstalled software (that was my first reboot here), phone couldn't find network type for that reason, and was searching for it all the time. Yesterday I allowed data transfer by sms again, phone found EDGE network, can't hear any more noise on our alarm clock and battery drainage is about 4% per 8,5 hour. Excellent
I hope this helps anyone out there with drainage problems.

I think you can also turn off/disable data transfer/traffic with the Data traffic widget, if you want to avoid using data.

xperia arc s
hold up, i dont understand. so im pretty sure i have the same problem. get about 17 hours with berely using my phone on any rom/kernal/firmware. even with data turned off, betterbatterystats shows 'noor unknown signal' and 'no data conection'? i sued to able to get 3 or more days out of my phone??

I think there is an application, which might be keeping the phone alive.

dout it, still drains after a complete rom wipe

Reception / Signal / Data connection and call issue when battery low

Hi all, I've got an unmodified HTC One M9 running 3.42.708.3 which has this annoying issue which I am unable to solve. I've ran through up to 80 pages of this troubleshooting forum and googled a lot in search of a similar case but hasn't found one that fixed my issue. The problem is as follow:
The phone runs great and has no issue loading data on 4G/4G+ when battery level is above 80%. Below 80%, it gets cranky and I have to manually switch it to 3G only to have a reliable data connection. Below 50% it has problems loading data even on 3G connection. 2G is out of the question as our telco in Singapore recently ended 2G services. On one occasion, I did a hard reboot (vol up + power) and it ran on 4G/4G+ perfectly even when the battery level is 30%. Below 25%, the signal comes and goes, and it cannot hold on to even 3G signal reliably. These issues are not limited to data connection, when the data connection is unreliable, the phone will not be able to make or receive calls/sms as well. All these issues are non-existent when I plug it in and charge from the wall adapter (Using official HTC 5V 1.5A charger if you're wondering).
These are the remedies I have applied and have no positive result:
1. Changed internal battery (ruling out bad battery issue)
2. Reset phone to factory default (used a few days and problem persist)
3. Clearing cache partition
4. Lastly, reflashed RUU from flippy's readme (with 3.42.708.3 which recently became available).
At this point, I can't think of anything else to fix this phone except to have it plugged in as much as possible to have it perform reliably.
Any suggestions will be appreciated. Thanks in advance!

not connectivity

Hi. Sometimes in a random moment my s20+ exynos doesn't refresh any app besides its connect to my wi fi. In this particular time i connect to mobile data and the phones continues doesn't refreshing any app. The only way is restart the phone. Once a day this happens to me. Any advice?

are you by chance using medium power saving or adaptive power saving?

WiFi issue

Hi, whenever I'm on a call on WhatsApp, Messenger, or any other social media, I can't use any internet related apps or my call starts dropping, and the other app also stop connecting to the server or whatsoever. As an example, I can't check FB, or use Chrome while on a call. Sometimes WiFi connection just disconnect and reconnect after a little while of trying to use two apps together while on a call. It also happened back in MiUi 11 android 10, I don't remember if it was on Android 9, but most likely. Am I the only one with this issue? I can surf internet on my pc even watch videos on YouTube without affecting the call quality on the phone, so my internet speed has nothing to do with it. Locked bootloader, MiUi 12, formatted after installing the new OS to make it trouble free, but nothing helped. Can anyone please tell me if I can downgrade this to an earlier version without getting this bricked? I know I have to unlock the bootloader, but I'm confused with that anti-rollback index or whatever it is called. Also Battery usage was 2 days before MiUi 12 with 8-10 hours display on time and now it's just one day. Appreciate your help. This is my first Xiaomi device and will be the last

1. There is a known issue with Wifi interference when Bluetooth is on. Are you using BT when talking on whatsapp? Unfortunately based on my research this is a hardware problem involving the wifi 2.4 Ghz and BT radios which interfere with each other and cannot be fixed via a software update. Downgrading will not help, and is a pain in the a** anyway because of Xiaomi's restrictions. A workaround is to use 5 Ghz (which is a different frequency than BT) or turn BT off when you need good wifi bandwidth.
2. For most people including myself battery usage is about the same with MIUI 12 as with 11 so if you are seeing a significant difference, your best option is to install Acubattery and try to determine which one of your apps is draining the battery. This is almost always the cause. There should not be more than a slight decrease compared to MIUI 11. Should be about 40 hrs including about 10 hrs SOT.

1. Thanks for the info.
2. It's weird, I never had the same battery usage on MiUi 12 even before I format the mobile. Also I've used Accu Battery app more than a week and each day after 80%-90% charge session, it started to drop battery health by 1% for last 3 days I used and I simply deleted the app finding it useless or it's my lack of knowledge ?

With Accubattery were you able to see which service or app was draining? Was the phone going into idle/sleep mode?
TheRisingDragon said:
1. Thanks for the info.
2. It's weird, I never had the same battery usage on MiUi 12 even before I format the mobile. Also I've used Accu Battery app more than a week and each day after 80%-90% charge session, it started to drop battery health by 1% for last 3 days I used and I simply deleted the app finding it useless or it's my lack of knowledge ?
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