Suddenly fails to find any network operators

[yahya69]

My son's Moto X with unofficial Lineage OS 13 has been working just fine until today, when it suddenly stopped finding any network operators. The SIM card is still recognized, I may enter the pin, but then it says "No service", and when I go to network operators choice, I find that not a single operator is displayed.

I tested the SIM in another phone, it seems to be fine. I also inserted different sim, which I know to work into this phone, but that did not help.

This is what I get from adb logcat, but I can't make sense of it:

XXXXXXXXXXX simSlotIndex=0 displayName=Willkommen carrierName=No service nameSource=0 iconTint=-16746133 dataRoaming=0 [email protected] mcc 26
2 mnc 7 mUserNwMode=9}]
01-07 18:11:59.254 1572 1572 D NetworkSettings: onSubscriptionsChanged: Slot matched SimSlotIndex: 0
01-07 18:11:59.257 1833 1833 D KP2AAF : OnAccEvent
01-07 18:11:59.306 1833 1833 D KP2AAF : OnAccEvent
01-07 18:11:59.306 1572 3902 D OpenGLRenderer: endAllStagingAnimators on 0x99f02e00 (RippleDrawable) with handle 0x9d070520
01-07 18:11:59.361 1833 1833 D KP2AAF : OnAccEvent
01-07 18:11:59.361 1833 1833 D KP2AAF : event: 32, package = com.android.phone
01-07 18:11:59.361 1833 1833 D KP2AAF : event package is no launcher
01-07 18:11:59.367 1833 1833 D KP2AAF : root package is no launcher
01-07 18:11:59.367 1833 1833 D KP2AAF : URL=androidapp://com.android.phone
01-07 18:11:59.368 1833 1833 D KP2AAF : Cancel notif
01-07 18:11:59.438 1881 6159 I GeofencerStateMachine: removeGeofences: removeRequest=RemoveGeofencingRequest[REMOVE_BY_IDS Ids=[atn_geofence_request_id], packageName=
com.google.android.apps.maps]
01-07 18:11:59.458 1881 1903 I GeofencerStateMachine: removeGeofences: removeRequest=RemoveGeofencingRequest[REMOVE_BY_IDS Ids=[atn_geofence_request_id], packageName=
com.google.android.apps.maps]
01-07 18:11:59.575 1572 1572 D NetworkQuery: unregistering callback class com.android.phone.NetworkSetting$3
01-07 18:11:59.579 1572 1572 I art : Starting a blocking GC Explicit
01-07 18:11:59.634 1572 1572 I art : Explicit concurrent mark sweep GC freed 29733(3MB) AllocSpace objects, 7(156KB) LOS objects, 40% free, 10MB/17MB, paused 610u
s total 41.233ms
01-07 18:11:59.656 1572 1572 I art : Starting a blocking GC Explicit
01-07 18:11:59.676 1572 1572 I art : Explicit concurrent mark sweep GC freed 13973(846KB) AllocSpace objects, 2(80KB) LOS objects, 39% free, 9MB/15MB, paused 640u
s total 19.563ms
01-07 18:11:59.676 1572 1572 I art : Starting a blocking GC Explicit
01-07 18:11:59.691 1881 1901 I GeofencerStateMachine: removeGeofences: removeRequest=RemoveGeofencingRequest[REMOVE_BY_IDS Ids=[atn_geofence_request_id], packageName=
com.google.android.apps.maps]
01-07 18:11:59.695 1572 1572 I art : Explicit concurrent mark sweep GC freed 3(96B) AllocSpace objects, 0(0B) LOS objects, 40% free, 9MB/15MB, paused 579us total
19.136ms
01-07 18:12:00.121 21030 21030 W ps : type=1400 audit(0.0:1428831): avc: denied { getattr } for path="/proc/1" dev="proc" ino=3578 scontext=u:r:untrusted_app:s0:c5
12,c768 tcontext=u:r:init:s0 tclass=dir permissive=0
01-07 18:12:00.145 1833 1833 D KP2AAF : OnAccEvent
01-07 18:12:00.145 1833 1833 D KP2AAF : event: 2048, package = com.android.systemui
01-07 18:12:00.145 1833 1833 D KP2AAF : return.

Could it be that suddenly the hardware has become faulty? Does anybody have suggestions how to test for the cause?

Thanks very much in advance!!!

 

[yahya69]

Did a factory reset, which did not solve it. Still no network operators found.

 

[yahya69]

Trying to understand the problem. logcat reveals that when it scans for networks, something goes wrong:

IsDataRoamingFromRegistration=false] newSS=[1 1 voice home data home null null null null null null Unknown Unknown CSS not supported -1 -1 RoamInd=-1 DefRoamInd=-1 EmergOnly=false IsDataRoamingFromRegistration=false] oldMaxDataCalls=20 mNewMaxDataCalls=20 oldReasonDataDenied=-1

Can someone enlighten me, what CSS stands for?

 

[yahya69]

Now I spotted more errors:
01-10 15:54:50.960 2132 2132 D DCT : [0]stopNetStatPoll
01-10 15:54:50.964 2132 2132 D DCT : [0]overall state is IDLE
01-10 15:59:14.763 2132 2795 D RILJ : [4000]> RIL_REQUEST_GET_CELL_INFO_LIST [SUB0]
01-10 15:59:14.770 217 7538 W use-Rlog/RLOG-RILQ: (0/217):RIL[0][cmd-109(912)] qmi_ril_qmi_req_log: req QMI NAS, msg id: 67, e len:0
01-10 15:59:14.804 217 7538 W use-Rlog/RLOG-RILQ: (0/217):RIL[0][cmd-109(912)] qmi_ril_qmi_resp_log: rsp - QMI NAS, msg id: 67, e len:7
01-10 15:59:14.804 2132 2243 D RilRequest: [4000]< RIL_REQUEST_GET_CELL_INFO_LIST error: com.android.internal.telephony.CommandException: GENERIC_FAILURE ret=
01-10 15:59:14.804 2132 2132 D GsmSST : [GsmSST] EVENT_GET_CELL_INFO_LIST: error ret null, e=com.android.internal.telephony.CommandException: GENERIC_FAILURE
01-10 15:59:14.804 2132 2795 D GsmSST : [GsmSST] SST.getAllCellInfo(): X size=0 list=null
01-10 15:59:14.805 2132 2795 D GsmSST : [GsmSST] getCellLocation(): X empty mCellLoc and CellInfo mCellLoc=[-1,-1,-1]
01-10 15:59:14.817 1929 3007 D TelephonyManager: getCellLocation returning null because CellLocation is empty
01-10 15:59:14.820 2132 20809 D GsmSST : [GsmSST] SST.getAllCellInfo(): return last, back to back calls
01-10 15:59:14.820 2132 20809 D GsmSST : [GsmSST] SST.getAllCellInfo(): X size=0 list=null

This "Generic failure" sounds spooky to me. As if something about the hardware is broken.

 

[VitaTaf]

Did a factory reset, which did not solve it. Still no network operators found.

Have you tried restoring to the stock firmware? If not, try the following commands in fastboot mode first:

fastboot erase modemst1
fastboot erase modemst2

Additionally, in the Phone app, you may dial *#*#INFO#*#* (*#*#4636#*#*) to obtain more information about the device's network.

 

[yahya69]

Have you tried restoring to the stock firmware?

Yes, but that also did not help, so I returned to LineageOS again.

If not, try the following commands in fastboot mode first:

fastboot erase modemst1
fastboot erase modemst2

I am not clear what that does. Seemingly, it erases two partitions. Is their content rebuilt after? Are those two partitions shipped with the custom rom? I did several google searches and each time I found it accompanied by the instruction to flash something else in the next step. So before nuking a partition I certainly would want to know., but so far I have not found an explanation of the partition layout.

Additionally, in the Phone app, you may dial *#*#INFO#*#* (*#*#4636#*#*) to obtain more information about the device's network.

I know. There it says it has no cellular network. As the logs I posted indicate, something goes badly wrong while searching for cells.

 

[yahya69]

Tried it now, after a backup, but it did not change the situation. The sim card is recognized, but "no service" remains.

 

[VitaTaf]

Tried it now, after a backup, but it did not change the situation. The sim card is recognized, but "no service" remains.

The fastboot commands clear the modem cache, and the cache regenerates on boot up.

Unfortunately, it looks like your issue is hardware-related. Which method did you use to restore to the stock firmware?

 

[yahya69]

The fastboot commands clear the modem cache, and the cache regenerates on boot up.

Unfortunately, it looks like your issue is hardware-related.

Which really would be a first time for me. I never saw the GSM module of a phone suddenly fail. My son insists that nothing had happened..

Yesterday, after reflashing the stock firmware yet again, I shortly got a very weak signal, and then, after I went to manual operator selection, it immediately went away again and stubbornly remained absent since.

Which method did you use to restore to the stock firmware?

TWRP (adb sideload). I am not sure whether the image is flashable via fastboot.

 

[VitaTaf]

Which really would be a first time for me. I never saw the GSM module of a phone suddenly fail. My son insists that nothing had happened..

Yesterday, after reflashing the stock firmware yet again, I shortly got a very weak signal, and then, after I went to manual operator selection, it immediately went away again and stubbornly remained absent since.



TWRP (adb sideload). I am not sure whether the image is flashable via fastboot.

As a last resort, I would suggest locating the full stock firmware for your device and follow the included instructions (if any) to flash it via fastboot, or at the very least, flash the fsg.mbn and NON-HLOS.bin for your device as listed under Modem Firmware in this thread. Instructions for flashing are included in the downloaded archive.

 

[yahya69]

As a last resort, I would suggest locating the full stock firmware for your device and follow the included instructions (if any) to flash it via fastboot, or at the very least, flash the fsg.mbn and NON-HLOS.bin for your device as listed under Modem Firmware in this thread. Instructions for flashing are included in the downloaded archive.

I reflashed them but as a result, the sim card is no longer recognized, rebooted several times.

Update: Reflashed lineageOS and now I got my sim card back, although still not connecting to the network. Reflashed the stock firmware with twrp (not sure how this would be done via fastboot), I got my phone to re-connect to the network for a few seconds, which made me jump up and down in excitement, but then the connection dropped again, before I could even make a phonecall


Update 2 Tried a different sim card, but again, when I try to register automatically, this is what I see:

}
D/PHONE (15915): [ServiceState] setDataRegState=1
D/PHONE (15915): [ServiceState] setDataRadioTechnology=0
D/GsmSST (15915): [GsmSST] 0handlPollStateResultMessage: GsmSST setDataRegState=1 regState=0 dataRadioTechnology=0
D/PHONE (15915): [ServiceState] setVoiceRegState=1
E/PHONE (15915): [ServiceState] setState deprecated use setVoiceRegState()
D/GsmSST (15915): [GsmSST] 0handleSIB5LackIssue: no cell location change and config is 'on'
D/GsmSST (15915): [GsmSST] 0Poll ServiceState done: oldSS=[1 1 voice home data home null null null null null null Unknown Unknown CSS not supported -1 -1 RoamInd=-1 DefRoamInd=-1 EmergOnly=false] newSS=[1 1 voice home data home null null null null null null Unknown Unknown CSS not supported -1 -1 RoamInd=-1 DefRoamInd=-1 EmergOnly=false] oldMaxDataCalls=20 mNewMaxDataCalls=20 oldReasonDataDenied=-1 realOldType=Unknown realNewType=Unknown mNewReasonDataDenied=-1
D/PHONE (15915): [ServiceState] setNullState=1

Needless to say it fails.