Arch Linux

dare023

Member

Registered: 2010-04-21

Posts: 64

3g usb dongle stopped working

Hi I have ZTE MF 195 3g usb modem which was working until couple days a go.
Now refuses to connect, sometimes I got KDE window with login details, and that is all.
I have checked connection details , it is correct, also sim card works in another modem but after 2 or 3 failed connects.
On win$ everything is fine.
Modem and sim card from another provider work well.
I use kde, network manager and standard kernel.
Also noticed this error

(ttyACM0): device state change: ip-config -> failed (reason 'ip-config-unavailable'

Any ideas welcome.
Thank you.

stevepa

Member

From: Texas USA

Registered: 2012-02-12

Posts: 113

Re: 3g usb dongle stopped working

@dare023,

Reading the wiki on wifi and troubleshooting always helped for me.

Did you do an upgrade to your system in the interim?
tks

---

Arch - LVM - ext4 - gnome (T60p 14.1 1400p  x86_64), (T60 15 flexview 1400p i686)

dare023

Member

Registered: 2010-04-21

Posts: 64

Re: 3g usb dongle stopped working

Yes I did upgrade, but strange is that other usb dongles work.
I read wiki but find nothing, also this is 3g dongle, no wifi.
I guess it is not a hardware problem, as that dongle works on win with no problem.
Thank you anyway.

Edit: Just run pacman -Syu I see that usb_modeswitch is on update list. I will report back tomorrow when I test modem.

Last edited by dare023 (2013-06-26 17:57:46)

stevepa

Member

From: Texas USA

Registered: 2012-02-12

Posts: 113

Re: 3g usb dongle stopped working

Yes I did upgrade, but strange is that other usb dongles work.
I read wiki but find nothing, also this is 3g dongle, no wifi.
I guess it is not a hardware problem, as that dongle works on win with no problem.
Thank you anyway.

Edit: Just run pacman -Syu I see that usb_modeswitch is on update list. I will report back tomorrow when I test modem.

Don't be surprised that other dongles work and one does not. The bug could affect one chipset and not the others.

I feel for you because I have a unlucky history of wifi problems getting broadcom, now even Atheros chipsets to work. Did you consider a 3g based wifi hotspot instead of a dongle?

---

Arch - LVM - ext4 - gnome (T60p 14.1 1400p  x86_64), (T60 15 flexview 1400p i686)

dare023

Member

Registered: 2010-04-21

Posts: 64

Re: 3g usb dongle stopped working

No, I must use this for now.
Still no luck, only I have noticed one more error

dbus[742]: [system] Rejected send message, 2 matched rules; type="error", sender=":1.2" (uid=0 pid=738 comm="/usr/bin/NetworkManager --no-daemon ") 
interface="(unset)" member="(unset)" error name="org.freedesktop.DBus.Error.UnknownMethod" 
requested_reply="0" destination=":1.40" (uid=0 pid=2200 comm="/usr/sbin/pppd nodetach lock nodefaultroute ipv6 ,")