I recently rooted my Huawei GL07S and switched to an operator which explicitly allows tethering (I inserted the new SIM card into the GL07S).

When I go to Settings>Wireless&Networks>Tethering&Pocket WiFi I get this screen:

“Pocket WiFi” is a term used by my previous operator to describe tethering, I suspect them of having modified it to work only on their network. I can’t use CyanogenMod/similar as they don’t support the GL07S, which is a rare phone.

Default USB Tethering

When I press “USB tethering”, the white circle becomes green with a check, and Pocket WiFi active or Tethering appears in the notification bar, but the connected Ubuntu does not see any connection:

Default WiFi Tethering

Alternatively, when I press “Pocket WiFi”, the item becomes grey, the caption becomes Turning Wi-Fi on…, and it stays like this forever:

Meanwhile adb logcat keeps outputting things like forever (longer log):

E/WifiStateMachine(  341): DefaultState: cannot get Soft AP current connected stations list
D/WifiService(  341): getApLinkedStaList
I/TetherSettings(17288): set PROPERTY_USBTETHERING_ON: false
I/WifiApEnabler(17288): set iswifihotspoton = true

To get it back from its grey state, the only solution is to restart the phone.

Barnacle Wifi Tether

When I press Start, I get:

Open Garden WiFi Tethering

When I press Start Open Garden Tethering I get this crash:

… and logcat says:

D/TETHER -> TetherApplication( 4591): Reporting stats: {fbon=false, ffox=false, nflt=true, fbok=0, root=true, phon=true, fbau=false, aid=e2a4f1ff707f9812, inst=1433847285, ertm=false, coac=0, sfap=true, c2dm=false, aver=4.1.2, side=1, mno=NTT DOCOMO, blth=true, setu=default, tver=47, rssc=0, bdwn=0, devi=default, asdk=16, imei=869065010878620, fbcr=0, pkg=og.android.tether, dtyp=generic, loc=35.6653574,139.733107, fbco=0, widg=0, fber=0, stat=1, comc=0, bup=0, mfr=HUAWEI, idrv=wext, temp=360, bin=true, uuid=E2A4F1FF-707F-9812-021X-XR2136017743, actl=true, tpow=true, mdl=GL07S}
D/TETHER -> TetherService( 4591): Service started: true, state: 1
D/TETHER -> TetherApplication( 4591): onlyEncryptionOrNothingFailed()
E/AndroidRuntime( 4591):        at og.android.tether.TetherApplication.displayToastMessage(TetherApplication.java:1341)
E/AndroidRuntime( 4591):        at og.android.tether.TetherApplication.readLogfile(TetherApplication.java:1421)
E/AndroidRuntime( 4591):        at og.android.tether.TetherApplication.onlyEncryptionOrNothingFailed(TetherApplication.java:1438)
E/AndroidRuntime( 4591):        at og.android.tether.TetherService$1.run(TetherService.java:256)
D/TETHER -> ServiceReceiver( 4591): onReceive:Intent { act=og.android.tether.intent.STATE flg=0x10 cmp=og.android.tether/.TetherServiceReceiver (has extras) } state:1
D/TETHER -> TetherApplication( 4591): Reporting of stats complete
W/ActivityManager(  349): Scheduling restart of crashed service og.android.tether/.TetherService in 5000ms

[ClockworkMod][8]

ClockworkMod is the only tethering app that works reliably (over USB). It is not free, though, so I would like to make it work with the built-in solution or with the open source Barnacle.

EasyTether

It has worked the first time I tried it. Since then, no way to use it anymore, it always says cannot claim USB interface: Device or resource busy.

FoxFi

When I push Activate WiFi Hotspot, it says WiFi Hotspot Ready, I can connect to the WiFi network from Ubuntu, but unfortunately all HTTP and HTTPS requests fail:

$ ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
From 192.168.43.1 icmp_seq=1 Destination Net Unreachable

Actually, the phone itself also loses Internet connectivity:

Question

What is going wrong?
How can I use Internet on my Ubuntu using my phone’s LTE data connection? (preferably without having to install a computer-side agent)