disable wifi battery optimisation and sleep, keeps disconnecting when off. - Xiaomi Redmi Note 5 / 5 Plus Questions & Answers

Hi!
This is a real problem making the phone almost unusable. It seems people had this kind of problem with older versions, but particularly with Oreo.
When my screen turns off (or is turned off) wifi seems to disconnect. I have a phone app working with my local PBX that immediately disconnects from the PBX system - although sometimes it doesn't. (It doesn't actively disconnect, but stops talking to the PBX and thus if you try calling it leads to an error unreachable in the PBX).
All other messaging apps like Whatsapp and Skype have similar problems - I get to the phone and turn it on only to get messages and missed calls from hours ago. Unusable.
Sometimes I can even see a little X next to the wifi symbol that disappears within a few second, sometimes the wifi symbol is missing altogether for a few seconds.
There is no more setting "keep wifi on during sleep" in Oreo. I disabled Battery optimisation for affected apps, I allowed background usage for them. The only thing I can't do is disable battery optimisation for wifi - which is displayed in the battery stats - but there is NO app "wifi" in app manager where I could flip this switch....
Any other ideas? I'm running AEX on the Note 5+. Thanks!!!

---

Seems like problem with kernel or maybe gapps, try different versions of gapps or kernel.

---

Oh, really? Gapps could affect that? How, why? It's getting insane. I wish there was an alternative to android phones - every time I need a new one it's months till it is fully usable and all for no good reason.
So far it sounds its the same problem many people report related to doze. "adb shell dumpsys deviceidle disable" should help as all the problems I have are described here:
http://forums.androidcentral.com/android-pie/904647-notifications-delayed-stopped-4.html
Unfortunately it doesn't seem to work on my system.

---

Just blurting this out here because matters have improved at least for the first minutes of screen off now...
I changed from "no notifications" on lockscreen to "show but hide sensitive info" and that seems to have improved things.
Really, a new phone system that doesn't work for what it's supposed to do - I'm not just speaking of delayed notifications - the worst part is that 3 voip apps and 3 messenger apps did not receive any calls when people tried calling me. The ONE thing a phone is supposed to do. UN-BE-LIEVABLE. It's so time somebody makes a proper Linux phone without focus on surveillance and spying. If it just worked as I need it to I'd pay up to 400 for it or 100 annually (just the OS!) - especially if I get requested features implemented and bugs removed.

---

Molvol said:
Hi!
When my screen turns off (or is turned off) wifi seems to disconnect. I have a phone app working with my local PBX that immediately disconnects from the PBX system - although sometimes it doesn't. (It doesn't actively disconnect, but stops talking to the PBX and thus if you try calling it leads to an error unreachable in the PBX).
Any other ideas? I'm running AEX on the Note 5+. Thanks!!!
Click to expand...
Click to collapse
Surprisingly, on Xiaomi devices some bugs are fw specific, means you face some weird bugs which are related to your firmware and not the system you are on. Try the latest 9.3.24 firmware from latest China, as I personally had the issue, I tried fixing it with different implementations but the bug was persistent, but I guess that issue seems to disappear every now and then when I use different firmwares. So give it a try!

---

AmulyaX said:
Surprisingly, on Xiaomi devices some bugs are fw specific, means you face some weird bugs which are related to your firmware and not the system you are on. Try the latest 9.3.24 firmware from latest China, as I personally had the issue, I tried fixing it with different implementations but the bug was persistent, but I guess that issue seems to disappear every now and then when I use different firmwares. So give it a try!
Click to expand...
Click to collapse
So you mean I should flash the latest MIUI China developer? And it will rewrite special partitions (like Modem) that other ROMS don't touch and therefore afterwards I may not have issues any more? Can I flash this with TWRP or something else and do I have to re-unlock afterwards or re-install TWRP? Thanks!!

---

Facing the same problem and can't fix the issue with anything.

---

I have a similar problem with the factory rom and firmware, so if I read it right, I have to flash another firmware?

---

i have the same problem, even flashing fastboot rom and going back to pie didn't fix it.

---

Same, it happened sometimes in Oreo, but is all the time in Pie.
Tried everything, but seems like a Xiaomi wide modem problem.

---

any updates? i have this issue too.. is "hide sensitive info" thing still works on yours?

---

So I have somewhat improved my problem with editing the wifi configuration file. People have this problem on the Pixel as well - it's partly an Android problem. It's so time somebody forks that **** from Google - they don't know what they are doing - and makes something stable for a phone to work like a phone should.
https://forum.xda-developers.com/oneplus-5/themes/magisk-pixel-2-wifi-mod-t3752321
For me the solution there didn't work at all, kept crashing. My current WCNSS_qcom_cfg.ini i copied from my LG G3 and it works much better, it now takes about 15min until it's dead, but the first call will wake it up now, so that a second one makes it ring. Still unusable and ridiculous, but at least it doesn't turn off with the screen.
This is how mine looks now:
Code:
# This file allows user to override the factory
# defaults for the WLAN Driver
# Enable IMPS or not
gEnableImps=1
# Enable/Disable Idle Scan
gEnableIdleScan=0
# Increase sleep duration (seconds) during IMPS
# 0 implies no periodic wake up from IMPS. Periodic wakeup is
# unnecessary if Idle Scan is disabled.
gImpsModSleepTime=0
# Enable BMPS or not
gEnableBmps=1
# Enable suspend or not
# 1: Enable standby, 2: Enable Deep sleep, 3: Enable Mcast/Bcast Filter
gEnableSuspend=3
# Phy Mode (auto, b, g, n, etc)
# Valid values are 0-9, with 0 = Auto, 4 = 11n, 9 = 11ac
gDot11Mode=0
# CSR Roaming Enable(1) Disable(0)
gRoamingTime=0
# Assigned MAC Addresses - This will be used until NV items are in place
# Each byte of MAC address is represented in Hex format as XX
Intf0MacAddress=000AF58989FF
Intf1MacAddress=000AF58989FE
Intf2MacAddress=000AF58989FD
Intf3MacAddress=000AF58989FC
# Set/Clear UAPSD mask
UapsdMask=0
# UAPSD service interval for VO,VI, BE, BK traffic
InfraUapsdVoSrvIntv=0
InfraUapsdViSrvIntv=0
# Flag to allow STA send AddTspec even when ACM is Off
gAddTSWhenACMIsOff=1
# Make 1x1 the default antenna configuration
gNumRxAnt=1
# Beacon filtering frequency (unit in beacon intervals)
gNthBeaconFilter=50
# Enable WAPI or not
# WAPIIsEnabled=0
# Flags to filter Mcast abd Bcast RX packets.
# Value 0: No filtering, 1: Filter all Multicast.
# 2: Filter all Broadcast. 3: Filter all Mcast abd Bcast
McastBcastFilter=0
#Flag to enable HostARPOffload feature or not
hostArpOffload=1
hostnsoffload=1
#SoftAP Related Parameters
# AP MAc addr
gAPMacAddr=000AF589dcab
# 802.11n Protection flag
gEnableApProt=1
#Enable OBSS protection
gEnableApOBSSProt=1
#Enable/Disable UAPSD for SoftAP
gEnableApUapsd=1
# Fixed Rate
gFixedRate=0
# Maximum Tx power
# gTxPowerCap=30
# Fragmentation Threshold
# gFragmentationThreshold=2346
# RTS threshold
RTSThreshold=2347
# Intra-BSS forward
gDisableIntraBssFwd=0
# WMM Enable/Disable
WmmIsEnabled=0
# 802.11d support
g11dSupportEnabled=0
# CCX Support and fast transition
EseEnabled=0
FastTransitionEnabled=1
ImplicitQosIsEnabled=0
gNeighborScanTimerPeriod=200
# default value of this parameter is zero to enable dynamic threshold allocation
# to set static roming threshold uncomment below parameter and set vaule
#gNeighborLookupThreshold=78
gNeighborScanChannelMinTime=20
gNeighborScanChannelMaxTime=30
# Legacy (non-CCX, non-802.11r) Fast Roaming Support
# To enable, set FastRoamEnabled=1
# To disable, set FastRoamEnabled=0
FastRoamEnabled=1
#Check if the AP to which we are roaming is better than current AP in terms of RSSI.
#Checking is disabled if set to Zero.Otherwise it will use this value as to how better
#the RSSI of the new/roamable AP should be for roaming
RoamRssiDiff=5
# SAP Country code
# Default Country Code is 2 bytes, 3rd byte is optional indoor or out door.
# Example
# US Indoor, USI
# Korea Outdoor, KRO
# Japan without optional byte, JP
# France without optional byte, FR
#gAPCntryCode=USI
#Short Guard Interval Enable/disable
gShortGI20Mhz=1
gShortGI40Mhz=1
#Auto Shutdown Value in seconds. A value of 0 means Auto shutoff is disabled
gAPAutoShutOff=0
# SAP auto channel selection configuration
# 0 = disable auto channel selection
# 1 = enable auto channel selection, channel provided by supplicant will be ignored
gApAutoChannelSelection=0
# Listen Energy Detect Mode Configuration
# Valid values 0-128
# 128 means disable Energy Detect feature
# 0-9 are threshold code and 7 is recommended value from system if feature is to be enabled.
# 10-128 are reserved.
# The EDET threshold mapping is as follows in 3dB step:
# 0 = -60 dBm
# 1 = -63 dBm
# 2 = -66 dBm
# ...
# 7 = -81 dBm
# 8 = -84 dBm
# 9 = -87 dBm
# Note: Any of these settings are valid. Setting 0 would yield the highest power saving (in a noisy environment) at the cost of more range. The range impact is approximately #calculated as:
#
# Range Loss (dB) = EDET threshold level (dBm) + 97 dBm.
#
gEnablePhyAgcListenMode=128
#Preferred channel to start BT AMP AP mode (0 means, any channel)
BtAmpPreferredChannel=0
#Preferred band (both or 2.4 only or 5 only)
BandCapability=0
#Beacon Early Termination (1 = enable the BET feature, 0 = disable)
enableBeaconEarlyTermination=1
beaconEarlyTerminationWakeInterval=8
#Bluetooth Alternate Mac Phy (1 = enable the BT AMP feature, 0 = disable)
gEnableBtAmp=0
#SOFTAP Channel Range selection
gAPChannelSelectStartChannel=1
gAPChannelSelectEndChannel=11
#SOFTAP Channel Range selection Operating band
# 0:2.4GHZ 1: LOW-5GHZ 2:MID-5GHZ 3:HIGH-5GHZ 4: 4.9HZ BAND
gAPChannelSelectOperatingBand=0
#Channel Bonding
gChannelBondingMode24GHz=1
gChannelBondingMode5GHz=1
gEnableModulatedDTIM = 3
gMaxLIModulatedDTIM = 3
gEnableDatainactivity = 200
#Enable Keep alive with non-zero period value
gStaKeepAlivePeriod=30
#Say gGoKeepAlivePeriod(5 seconds) and gGoLinkMonitorPeriod(10 seconds).
#For every 10 seconds DUT sends Qos Null frame(i.e., Keep Alive frame if link is idle for last 10 seconds.)
#For both active and power save clients.
#Power save clients: DUT set TIM bit from 10th second onwards and till client honors TIM bit.
#If doesn't honor for 5 seconds then Driver remove client.
#Active clients: DUT send Qos Null frame for 10th seconds onwards if it is not success still DUT try on
#11th second if not tries on 12th and so on till 15th second. Hence before disconnection DUT will send 5 NULL frames.
#Hence in any case DUT will detect client got removed in (10+5) seconds. i.e., (gGoKeepAlivePeriod +gGoLinkMonitorPeriod)..
#gGoLinkMonitorPeriod/ gApLinkMonitorPeriod is period where link is idle and it is period
#where we send NULL frame.
#gApLinkMonitorPeriod = 10
#gGoLinkMonitorPeriod = 10
#gGoKeepAlivePeriod/gApKeepAlivePeriod is time to spend to check whether frame are succeed to send or not.
#Hence total effective detection time is gGoLinkMonitorPeriod+ gGoKeepAlivePeriod/gApLinkMonitorPeriod+ gApKeepAlivePeriod.
gGoKeepAlivePeriod = 10
gApKeepAlivePeriod = 30
#If set will start with active scan after driver load, otherwise will start with
#passive scan to find out the domain
#gEnableBypass11d=1
#If set to 0, will not scan DFS channels
gEnableDFSChnlScan=1
gEnableLogp=1
# Enable Automatic Tx Power control
gEnableAutomaticTxPowerControl=0
# 0 for OLPC 1 for CLPC and SCPC
gEnableCloseLoop=1
#Data Inactivity Timeout when in powersave (in ms)
gDataInactivityTimeout=200
gEnableLpwrImgTransition=1
# Scan Timing Parameters
# gPassiveMaxChannelTime=110
# gPassiveMinChannelTime=60
# Enable Tx LDPC
#gTxLdpcEnable = 1 for HT mode, 2 for VHT mode,3 for both HT and VHT
gTxLdpcEnable=3
# gActiveMaxChannelTime=40
# gActiveMinChannelTime=20
# Valid values are 2048,4096,8192 and so on
# Please don't use values other than the ones mentioned above
gMaxMediumTime=4096
# 802.11K support
gRrmEnable=1
gRrmOperChanMax=8
gRrmNonOperChanMax=8
gRrmRandIntvl=100
#Scan offload
gEnableDirectedScanOffload=0
#FlexConnect Power Factor
#Default is set to 0 (disable)
gFlexConnectPowerFactor=0
gVhtChannelWidth=2
# VHT Tx/Rx MCS values
# Valid values are 0,1,2. If commented out, the default value is 0.
# 0=MCS0-7, 1=MCS0-8, 2=MCS0-9
gVhtRxMCS=2
gVhtTxMCS=2
# Enable Tx beamforming
gTxBFEnable=1
#Enable/Disable TDLS Feature
gEnableTDLSSupport=1
#Enable/Disable TDLS Implicit Trigger
gEnableTDLSImplicitTrigger=0
#Enable/Disable TDLS WMM Mode
gEnableTDLSWmmMode=1
#Enable/Disable TDLS Buffer Sta
gEnableTDLSBufferSta=1
#Enable/Disable Mgmt Frame Logging
gEnableMgmtLogging=1
#Enable/Disable MAc Spoofing
gEnableMacAddrSpoof=1
#Set RPS CPU mask
rps_mask=0f
# wifi ping test
gEnableDynSplitScan=0
gEnableLLStats=1
#Enable Power Save offload
gEnablePowerSaveOffload=1
isandroidpsen=1
END
# Note: Configuration parser would not read anything past the END marker

---

I have the same problem
Is there any fix j had tried to flash fm but nothing
The problem still not fixed

---

i wonder if it's related with router. What are yours? Mine is huawei hg630a and i also didn't try another wifi yet. But it's working good with miui roms..

---

Mine is ZTE and I don't think it's related to router
I think it related to fm or rom or modem
I don't know

---

mahmoud ayman said:
Mine is ZTE and I don't think it's related to router
I think it related to fm or rom or modem
I don't know
Click to expand...
Click to collapse
i tried almost every aosp pie rom and firmwares but nothing changes. (redmi 5 plus)

---

And I tried most Oreo Roms I could find. I did get different behavior with different routers/Wifi APs, but that only proves that the phone really has a problem. ALL other devices I tried have no problem whatsoever with any of these (Samsung, LG, Sony...). It's is not a hardware problem (in the sense that it can't be fixed by a setting). The problem is known to thousands of people struggling with android phones - although some are just similar, not identical.
We only need to find the right setting, maybe in the WCNSS_qcom_cfg.ini or possibly related to kernel/power management. Unfortunately I have not found proper documentation about either of these. Could also be a modem setting, but that is even more obscure and less documented. We either need incredible luck randomly trying things or someone who knows their way around android qualcom hw interaction.

---

i enabled gps and no problems with wifi while screen is locked. Tested it for 2 days. (9.4.11 firmware, twrp 3.3.0, gapps mini, resurrection remix and viper both works fine so other ones should too.)

---

hi, i actually have the opposite problem. i want to my wifi to go off auto when the phone goes off (the screen) not the mobile data but the wifi so i can always have connection but save battery with the wifi.
My phone's battery seems to barely get to 12 or 14 hs in a normal (to low) use. and ending the day with no battery at all, i had a samsung that get me to the night with 50% or even more most days. and i remember to have the option on wifi setting to turn wifi off when phone sleeps to save battery. any suggetions?

---

Hi, I have a Samsung S5, however, I think that it's a problem universal to a lot of Android phones (6 months+ googling on issues that ultimately seem to be caused by the wifi being switched off and going through xda threads for so many different phones). Eventually I found that my (CM based) ROM installation (Resurrection Remix 7.02) seems to be missing (or more likely has dispersed the relevant files into other locations) the /system/csc folder.
I found a thread on android central from a user alexceltare2 suggesting a line to add to /system/csc/others.xml (or features.xml if that exists) which is:
<CscFeature_Wifi_SupportAutoReconnect>TRUE</CscFeature_Wifi_SupportAutoReconnect>
I added this folder from an old ROM installation I happened to have (and modified the file content to remove the old ROM references) with a root file explorer to get the csc folder, added that line to my now existing features.xml file, rebooted and found I went from wifi sleeping after ~15 minutes or so to 7+ hours of wifi stability.
I don't know whether this helps anybody but I haven't found many references to missing csc folders or the features/other.xml files.