Wifi USB Adapter stops working intermittently

[AndyOpie150]

Time to do some more research on my part. Will post if I find out anything. It's got to be something simple that I'm missing.

[Colin23erk]

Hi
Loosing Hope with solving this --each step forward just presents a new problem to solve !

I have found out what the identifier is for rfkill its the devices number as shown with ( rfkill list )

Code: [Select]

root@colin-NC110:/home/colin# rfkill list
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
2: samsung-wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
3: samsung-bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
4: phy1: Wireless LAN
Soft blocked: yes
Hard blocked: no
root@colin-NC110:/home/colin# rfkill unblock 1
root@colin-NC110:/home/colin# rfkill unblock 4
root@colin-NC110:/home/colin#

I blocked 1 before I connected the dongle  to find I still had no WiF

The next problem is that both phy1 and phy0 are both blocked

In the output above item 1 that is shown as not blocked is also blocked for use as well as Item 4 which is shown as soft blocked

I could not unblock 1  (rfkill unblock 1) directly

I only got WiFi back when unblocking 4 (rfkill unblock 4) which unlocked 1 and 4

Where do I go now

Colin

[N4RPS]

Hello!

Found this helpfile in rfkill:

rob@N4RPS-D630-L:~$ rfkill --help
Usage:   rfkill [options] command
Options:
   --version   show version (0.5-1ubuntu1 (Ubuntu))
Commands:
   help
   event
   list [IDENTIFIER]
   block IDENTIFIER
   unblock IDENTIFIER
where IDENTIFIER is the index no. of an rfkill switch or one of:
   <idx> all wifi wlan bluetooth uwb ultrawideband wimax wwan gps fm nfc

Apparently, 'wlan0' is not supported. Given what the help file says, I must stand corrected about wifi as a legal parameter for this command. Additionally, I'd run this rfkill command BEFORE inserting the USB adapter, so you don't kill IT, TOO.

As for the 'ifdown' command, try 'sudo' in front of it. Whenever you see 'Permission denied', it's probably because it's a 'super user only ' command...

73 DE N4RPS
Rob


73

[AndyOpie150]

Sorry about that. Didn't see the last output clearly. Not enough sleep last night due to installing Linux Lite on another computer, but only had phones throttled 3G signal 25KB/s to update-took forever).
If you want you could try:
The kill command, switching wlan0 with phy0.

Again sorry for not seeing the last output clearly.

[Colin23erk]

OK I was hoping to sort out the problem while the Advent is away and possibly help someone else in the future .
 I have noticed a difference with the adapter between Linux (adapter light stays on ) and Win7  ( light flashes)

Thanks for all the effort you put in trying to solve it .

Bye Colin

[AndyOpie150]

I think we need to concentrate on the other machine instead of the Samsung with the already great WiFi connection.
Try the commands on the Advent, as thats the one you need to get the WiFi working on.

[Colin23erk]

the preious output error-ed with (  interface wlan0 not configured) so I tried rfkill list wlan  to see how the WLANs were listed but I am confused with the output as it does not use (  wlan0  etc  )

Code: [Select]

colin@colin-NC110:~$ rfkill list wlan
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
2: samsung-wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
4: phy1: Wireless LAN
Soft blocked: no
Hard blocked: no
colin@colin-NC110:~$
Item 4 is the dongle - If I unplug /plug it in the item number and the phy number steps up one

Does this shed any light why the command fails or am I looking for the wrong items

[Colin23erk]

Code: [Select]

colin@colin-NC110:~$ sudo su
[sudo] password for colin:
root@colin-NC110:/home/colin# ifdown wlan0
ifdown: interface wlan0 not configured
root@colin-NC110:/home/colin#


[AndyOpie150]

Try:

Code: [Select]

sudo su
ifdown wlan0


[Colin23erk]

Hi This is the output

Code: [Select]



colin@colin-NC110:~$ rfkill block wlan0
Bogus block argument 'wlan0'.

colin@colin-NC110:~$ ifdown wlan0
ifdown: failed to open lockfile /run/network/.ifstate.lock: Permission denied

colin@colin-NC110:~$


[AndyOpie150]

LOL. No it should be wlan0.
Thanks for catching my brain dead mistake.

Colin23erk: Replace wifi0 with wlan0 in the code. Sorry for the mistake.

EDIT: Looking at the outputs to the Advent; the code should be the same for it to. Don't know why I was thinking it was wifi0 (I help out at to many linux forum sites).

[N4RPS]

Hello!

Am I just being ignorant, or should wifi0 be wl0 or wlan0 instead?

73 DE N4RPS
Rob

[Colin23erk]

Code: [Select]

colin@colin-NC110:~$ rfkill block wifi0
Bogus block argument 'wifi0'.
colin@colin-NC110:~$ ifdown wifi0
ifdown: failed to open lockfile /run/network/.ifstate.lock: Permission denied

As it failed I tried

Code: [Select]

colin@colin-NC110:~$ sudo ifdown wifi0
[sudo] password for colin:
ifdown: interface wifi0 not configured
colin@colin-NC110:~$

The Advent gets used when my friend comes so I would like it to be able to connect to You Tube

[AndyOpie150]

Did it work?

[Colin23erk]

Sorry

The problem happened when my Advent PC's Internal WiFi stopped connecting to my router so I used the USB WiFi adapter and although it connected successfully via the Router the Internet kept dropping out .

To see if it was a problem with the Adapter I tried it in the Samsung PC and found it was exactly the same .

At the moment the Advent is not serviceable so I have been using the Samsung to try and find a solution that will work in both PCs