[TouchPad Q&A, Help & Troubleshooting] Globaltraveler5565:
WiFi shuts down overnight, every night

I continue to experience WiFi network shutdown every night. The TP is always left plugged into house power over night. It resumes normal operation when I enter settings->wifi->select home router. It seems to stay On all day when I periodically used the device. It seems to occur only after some duration of inactivity. Is it possible there is some arcane setting that attempts to save battery (even though it is on house power) and starts turning off various power consumption components? I'll upload a logcat in the AM when the event is still fresh and recent.

I'm using Avast! Power Management app, but it is set to kick in only when the battery level drops below 15%.

BTW, this occurs on Marshmallow 6.0 in a similar fashion and duration. Any help or advice would be appreciated. Thanks for keeping this device alive and vigorous.

GlobalTraveler5565

Update: yesterday I neglected to indicate I'm using Lollipop 5.1.1 dated 2015.10.02 on this TP.

How do I attach or upload the syslog/logcat files? I can't find the button or option to post it in the xda app or on the Web view. ? Here's a clear text of the logcat, filtered on "wifi".

---- Dec 4, 2015 8:54:42 AM ----

12-03 21:18:12.594 480 927 E WifiService: Invoking mWifiStateMachine.setWifiEnabled

12-03 22:02:44.009 480 498 I ActivityManager: Waited long enough for: ServiceRecord{27926ba6 u0 com.avast.android.batterysaver/.wififencing.WifiScanService}

12-03 22:56:55.282 480 947 E WifiService: Invoking mWifiStateMachine.setWifiEnabled

12-04 06:17:06.568 480 947 I ActivityManager: Start proc 14591:com.evervolv.widgets/1000 for broadcast com.evervolv.widgets/.WifiWidgetProvider

12-04 08:40:46.692 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.49 rxSuccessRate=2.36 targetRoamBSSID=any RSSI=-76

12-04 08:41:06.697 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.13 rxSuccessRate=5.70 targetRoamBSSID=any RSSI=-66

12-04 08:41:06.697 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:41:26.700 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=1.63 rxSuccessRate=5.51 targetRoamBSSID=any RSSI=-74

12-04 08:41:26.700 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:41:46.703 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=5.20 rxSuccessRate=8.33 targetRoamBSSID=any RSSI=-71

12-04 08:41:46.703 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:42:06.711 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=8.46 rxSuccessRate=19.86 targetRoamBSSID=any RSSI=-69

12-04 08:42:06.711 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:42:26.715 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=9.17 rxSuccessRate=18.11 targetRoamBSSID=any RSSI=-80

12-04 08:42:26.716 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:42:46.717 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=5.10 rxSuccessRate=7.11 targetRoamBSSID=any RSSI=-69

12-04 08:42:46.717 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:43:06.720 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=16.02 rxSuccessRate=15.01 targetRoamBSSID=any RSSI=-64

12-04 08:43:06.721 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:43:26.723 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.03 rxSuccessRate=3.13 targetRoamBSSID=any RSSI=-69

12-04 08:43:46.728 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=12.72 rxSuccessRate=9.44 targetRoamBSSID=any RSSI=-66

12-04 08:43:46.729 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:44:06.736 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=1.30 rxSuccessRate=5.99 targetRoamBSSID=any RSSI=-70

12-04 08:44:06.737 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:44:26.742 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=4.00 rxSuccessRate=5.61 targetRoamBSSID=any RSSI=-67

12-04 08:44:26.743 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:44:46.750 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.39 rxSuccessRate=0.30 targetRoamBSSID=any RSSI=-71

12-04 08:44:46.751 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:45:06.756 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.00 rxSuccessRate=3.86 targetRoamBSSID=any RSSI=-69

12-04 08:45:06.757 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:45:26.762 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.59 rxSuccessRate=3.76 targetRoamBSSID=any RSSI=-73

12-04 08:45:26.763 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:45:46.770 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.89 rxSuccessRate=0.65 targetRoamBSSID=any RSSI=-64

12-04 08:45:46.771 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:46:06.776 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.00 rxSuccessRate=4.08 targetRoamBSSID=any RSSI=-66

12-04 08:46:06.777 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:46:26.779 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=7.00 rxSuccessRate=10.26 targetRoamBSSID=any RSSI=-67

12-04 08:46:26.779 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:46:46.789 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=1.18 rxSuccessRate=2.60 targetRoamBSSID=any RSSI=-70

12-04 08:46:46.790 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:47:06.793 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.00 rxSuccessRate=3.83 targetRoamBSSID=any RSSI=-65

12-04 08:47:06.794 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:47:26.798 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.00 rxSuccessRate=3.04 targetRoamBSSID=any RSSI=-74

12-04 08:47:46.810 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.00 rxSuccessRate=0.01 targetRoamBSSID=any RSSI=-69

12-04 08:47:46.811 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:48:06.812 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.05 rxSuccessRate=5.95 targetRoamBSSID=any RSSI=-71

12-04 08:48:06.812 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:48:26.819 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.00 rxSuccessRate=4.35 targetRoamBSSID=any RSSI=-65

12-04 08:48:26.820 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:48:46.824 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.52 rxSuccessRate=5.07 targetRoamBSSID=any RSSI=-66

12-04 08:48:46.825 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:49:06.828 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.00 rxSuccessRate=6.67 targetRoamBSSID=any RSSI=-68

12-04 08:49:06.829 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:49:26.830 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=2.52 rxSuccessRate=5.44 targetRoamBSSID=any RSSI=-69

12-04 08:49:26.831 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:49:46.833 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=5.75 rxSuccessRate=6.51 targetRoamBSSID=any RSSI=-62

12-04 08:49:46.833 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:50:06.836 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=5.78 rxSuccessRate=8.44 targetRoamBSSID=any RSSI=-64

12-04 08:50:06.836 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:50:26.842 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.02 rxSuccessRate=4.71 targetRoamBSSID=any RSSI=-59

12-04 08:50:26.843 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:50:46.845 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.00 rxSuccessRate=2.01 targetRoamBSSID=any RSSI=-65

12-04 08:50:46.845 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:51:06.853 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=26.45 rxSuccessRate=27.91 targetRoamBSSID=any RSSI=-61

12-04 08:51:06.855 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:51:26.860 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=7.55 rxSuccessRate=12.38 targetRoamBSSID=any RSSI=-63

12-04 08:51:26.861 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:51:46.865 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.02 rxSuccessRate=0.11 targetRoamBSSID=any RSSI=-66

12-04 08:51:46.866 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:52:06.872 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.00 rxSuccessRate=4.53 targetRoamBSSID=any RSSI=-64

12-04 08:52:06.873 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:52:26.881 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.33 rxSuccessRate=4.87 targetRoamBSSID=any RSSI=-63

12-04 08:52:26.882 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:52:46.886 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=3.56 rxSuccessRate=5.32 targetRoamBSSID=any RSSI=-63

12-04 08:52:46.887 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:53:06.893 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.17 rxSuccessRate=4.88 targetRoamBSSID=any RSSI=-65

12-04 08:53:06.894 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:53:26.898 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.06 rxSuccessRate=4.68 targetRoamBSSID=any RSSI=-64

12-04 08:53:46.903 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=1.59 rxSuccessRate=2.53 targetRoamBSSID=any RSSI=-69

12-04 08:53:46.904 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:54:06.907 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.07 rxSuccessRate=4.84 targetRoamBSSID=any RSSI=-70

12-04 08:54:06.907 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

12-04 08:54:26.912 480 559 E WifiStateMachine: WifiStateMachine CMD_START_SCAN source -2 txSuccessRate=0.00 rxSuccessRate=3.74 targetRoamBSSID=any RSSI=-67

12-04 08:54:26.913 480 559 E WifiStateMachine: WifiStateMachine starting scan for "Qwerty2"-WPA_PSK with 2462

---- Dec 4, 2015 8:54:42 AM ----

UPDATE 2 - SOLUTION: backtracking from a hint in the log, I found a WiFi setting turned off that seeks to reestablish connections to known Hotspots. Don't know why it was turned off, but it was likely something stupid I did myself and forgot. Turning this setting back on resolved the issue, as of two nightly cycles without network drop. It seems the AT&T router restarts itself nightly and drops all links. And without the WiFi setting turned on, the network would stay down. I'll have to look into why the router reboot occurs. But that's a personal problem...

I still don't understand why the log shows soooo many entries scanning the network. See the repeated pairs of entries above. It seems a bit aggressive.