Testing Hardware failure?

[EchoEum]

Is there a way for me to test and see if the wlan card is physically working?

I'm trying to figure out if I should be returning my unit or figuring out a software fix.

Cheers

[MaxK1]

What model Pi? Which wi-fi adapter? What O/S? Fully up-to-date? Anything not covered by The Official Secrets Act?

[B.Goode]

Wlan card?

Is this an external device of some kind? Or are you referring to the interface built into an RPi3?

What tests have you carried out: which Operating System is being used? Do you have independent evidence that the access point you are associating with is working?

Added: overlapping ideas unintended, but left for emphasis.

[EchoEum]

Thank you for the replies.

Neither wifi or bluetooth are working and I am using a RPi3 with the build in hardware.

Latest version of Jessie.

I have updated and upgraded to ensure everything is current.

I have run

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iwlist wlan0 scan

and receive "wlan0 No scan results"

I have spent several hours following a bunch of advice in other threads.

The wifi and bluetooth were working previously.

It stopped working in the middle of me attempting to get bluetooth audio working.

I have tried formatting two different SD Cards and doing fresh installs of NOOBS and Jessie because I thought it might have been something I did, but that didn't resolve the issue.

Thank you for any help/advice you may have for me.

Cheers

UPDATE: oh, and yes I know the wifi is working at I have many other devices running off it.

[RaTTuS]

try
sudo iwlist wlan0 scan

[EchoEum]

try
sudo iwlist wlan0 scan

If I add "sudo" to the command I receive
"wlan0 Interface doesn't support scanning : Device or resource busy"

UPDATE: I also relieve that message if I run the command for wlan1; regardless of whether "sudo" is used or not.

UPDATE-2: I ran

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sudo ifconfig wlan0 up

now when I run

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sudo iwlist wlan0 scan

I receive "wlan0 No scan results"

[EchoEum]

It is also worth noting that if I search for networks under the GUI it says "wlan0: not associated"

[DougieLawson]

Connect it to the internet with a ethernet cable and run
sudo apt-get update && sudo apt-get -y dist-upgrade && sudo rpi-update

[EchoEum]

Connect it to the internet with a ethernet cable and run
sudo apt-get update && sudo apt-get -y dist-upgrade && sudo rpi-update

I previously tried each of these by typing them in after the previous one had completed.

I just gave it a go with this syntax and rebooted.

Unfortunately, I see no change.

[DougieLawson]

Change your power supply for one that can reliably supply 2.5A @ 5V0.

[EchoEum]

Change your power supply for one that can reliably supply 2.5A @ 5V0.

I just gave that a go. I tried 4 different 5v from apple, 1 from Game Stop, 1 from Samsung, and 1 from unknown:China.

The 4 Apples and 1 Samsung each produced a solid red light.

The samsung powered on, but never received the red light.

And the unknown from china started to boot then died out.

Each is listed as being 5v. None of the successful boots produced a change in network connectivity.

[DougieLawson]

Try this one: http://uk.rs-online.com/web/p/plug-in-p ... y/1034302/

[EchoEum]

So it must be a hardware issue. It now says "no network adapter found"

I put the same card into the RPi3 that just came in the mail and it works fine.

[DougieLawson]

It's going to be a kernel/firmware/OS problem.

Start with a completely fresh copy of Raspbian 2016-05-27 on a new SDCard. Don't bother with NOOBS.
Boot that then run
sudo apt-get update && sudo apt-get -y dist-upgrade

[EchoEum]

You think it might still be software related when the same card works in a different hardware unit?

[MaxK1]

I managed to kill the wifi part of the chip on one of my pi 3's. Bt still works fine... post your dmesg output if you can.

[EchoEum]

I managed to kill the wifi part of the chip on one of my pi 3's. Bt still works fine... post your dmesg output if you can.

How do I obtain that?

[SonOfAMotherlessGoat]

Type dmesg at a command line prompt.

[RaTTuS]

sudo apt-get update && sudo apt-get upgrade -y && sudo apt-get install pastebinit
dmesg | pastebinit
post the resulting url

[EchoEum]

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[EchoEum]

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[EchoEum]

Here is the part I think pertains to my problem:

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[    6.123601] brcmfmac: brcmf_add_if: ERROR: netdev:wlan0 already exists
[    6.123628] brcmfmac: brcmf_add_if: ignore IF event
[    6.128380] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[    6.128429] brcmfmac: power management disabled

[DougieLawson]

Nope, that looks perfectly normal

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[    5.800109] brcmfmac: brcmf_add_if: ERROR: netdev:wlan0 already exists
[    5.800137] brcmfmac: brcmf_add_if: ignore IF event
[    5.805464] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[    5.805518] brcmfmac: power management disabled
[    6.485019] cfg80211: Regulatory domain changed to country: GB

What do you get from

ifconfig -a
ip route
ping -c3 (ip route | awk '/default/ {print $3}')
ping -c3 8.8.8.8
ping -c3 google.com

[EchoEum]

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[EchoEum]

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