ikk
Posts: 55
Joined: Sat Feb 09, 2019 12:39 am

wlan0 disappears after updating packages in ubuntu server on rpi 4B [ ubuntu server 64bit ]

Wed Jul 31, 2019 6:01 pm

Hello,

I just followed this guide https://jamesachambers.com/raspberry-pi ... ion-guide/ to install ubuntu server 64bit on my Raspberry pi 4B. I need 64bits as that insanely increases the hash rate when crypto mining.

I was able to successfully setup wifi. However, when running sudo apt update and sudo apt upgrade then rebooting, the wifi stopped working.

I checked ip link show and wlan0 no longer shows up.

Not sure what to do now. Nor whether this is the right place to ask for this.

ikk
Posts: 55
Joined: Sat Feb 09, 2019 12:39 am

Re: wlan0 disappears after updating packages in ubuntu server on rpi 4B

Wed Jul 31, 2019 8:08 pm

I just swapped microSD cards to boot back to raspbian buster and now wifi isn’t working here either.

Clicking on the networks panel shows “No wireless interfaces found” and just hovering over it shows “wlan0: Not associated”.

raspi-config shows “Could not communicate with wpa_supplicant” when trying to use any setting related to network

I’ve already tried everything in other posts of the same issue to no avail


epoch1970
Posts: 3532
Joined: Thu May 05, 2016 9:33 am
Location: Paris, France

Re: wlan0 disappears after updating packages in ubuntu server on rpi 4B

Fri Aug 02, 2019 12:10 pm

You'll have better luck asking the author of that howto I think.
"S'il n'y a pas de solution, c'est qu'il n'y a pas de problème." Les Shadoks, J. Rouxel

ikk
Posts: 55
Joined: Sat Feb 09, 2019 12:39 am

Re: wlan0 disappears after updating packages in ubuntu server on rpi 4B

Sat Aug 03, 2019 8:47 am

epoch1970 wrote:
Fri Aug 02, 2019 12:10 pm
You'll have better luck asking the author of that howto I think.
If you’ve read my posts properly then you’ll realize the issue was passed on to raspbian. The author has nothing to do with raspbian.

epoch1970
Posts: 3532
Joined: Thu May 05, 2016 9:33 am
Location: Paris, France

Re: wlan0 disappears after updating packages in ubuntu server on rpi 4B [ ubuntu server 64bit ]

Sat Aug 03, 2019 9:06 am

Then you messed up the firmware I guess.
"S'il n'y a pas de solution, c'est qu'il n'y a pas de problème." Les Shadoks, J. Rouxel

ikk
Posts: 55
Joined: Sat Feb 09, 2019 12:39 am

Re: wlan0 disappears after updating packages in ubuntu server on rpi 4B [ ubuntu server 64bit ]

Mon Aug 05, 2019 3:09 pm

epoch1970 wrote:
Sat Aug 03, 2019 9:06 am
Then you messed up the firmware I guess.
How though? These two operating systems are on completely different microSD cards!

epoch1970
Posts: 3532
Joined: Thu May 05, 2016 9:33 am
Location: Paris, France

Re: wlan0 disappears after updating packages in ubuntu server on rpi 4B [ ubuntu server 64bit ]

Mon Aug 05, 2019 3:28 pm

Pi4 has resident firmware.
"S'il n'y a pas de solution, c'est qu'il n'y a pas de problème." Les Shadoks, J. Rouxel

ikk
Posts: 55
Joined: Sat Feb 09, 2019 12:39 am

Re: wlan0 disappears after updating packages in ubuntu server on rpi 4B [ ubuntu server 64bit ]

Fri Aug 16, 2019 9:08 am

epoch1970 wrote:
Mon Aug 05, 2019 3:28 pm
Pi4 has resident firmware.
Does that mean I permanently messed it up?

I’m not really sure how to troubleshoot this, let alone how to fix it. Starting wpa_supplicant manually brings wifi right back up, but the moment i close the terminal window that has wpa_supplicant running wifi stops working instantly. I checked and the wpa_supplicant service is already enabled (I didn’t touch it to begin with).

epoch1970
Posts: 3532
Joined: Thu May 05, 2016 9:33 am
Location: Paris, France

Re: wlan0 disappears after updating packages in ubuntu server on rpi 4B [ ubuntu server 64bit ]

Fri Aug 16, 2019 10:42 am

Ah. If wpa_supplicant works then firmware and drivers are ok. Good news.
(I suppose you can “flash” Pi4 with any available version of the firmware but I don’t know how to do that, having no Pi4)

Something looks incorrect in the boot process then. If it is on Ubuntu 64 I wouldn’t know where the problem might be.
As a workaround, does “ip link set wlan0 down; sleep 1; ip link set wlan0 up” work?
If it does revive the WiFi link, then perhaps you can shove these commands in /etc/rc.local temporarily...
"S'il n'y a pas de solution, c'est qu'il n'y a pas de problème." Les Shadoks, J. Rouxel

thatchunkylad198966
Posts: 112
Joined: Thu Jul 04, 2019 10:21 am
Location: UK, Birmingham

Re: wlan0 disappears after updating packages in ubuntu server on rpi 4B [ ubuntu server 64bit ]

Fri Aug 16, 2019 10:48 am

Or not use a "beta" release of Ubuntu and wait for the official release.
You're bound to have problems.

Just use Raspbian Buster lite.
One man's trash is another man's treasure! :) Pi's I have; Pi Zero, Pi Zero W, Pi 2 x2, Pi 3 x2, Pi 4 4GB x2.

epoch1970
Posts: 3532
Joined: Thu May 05, 2016 9:33 am
Location: Paris, France

Re: wlan0 disappears after updating packages in ubuntu server on rpi 4B [ ubuntu server 64bit ]

Fri Aug 16, 2019 10:53 am

The OP is mining stuff, he needs a 64 bit OS.
"S'il n'y a pas de solution, c'est qu'il n'y a pas de problème." Les Shadoks, J. Rouxel

ikk
Posts: 55
Joined: Sat Feb 09, 2019 12:39 am

Re: wlan0 disappears after updating packages in ubuntu server on rpi 4B [ ubuntu server 64bit ]

Sat Aug 24, 2019 5:37 pm

epoch1970 wrote:
Fri Aug 16, 2019 10:42 am
Ah. If wpa_supplicant works then firmware and drivers are ok. Good news.
(I suppose you can “flash” Pi4 with any available version of the firmware but I don’t know how to do that, having no Pi4)

Something looks incorrect in the boot process then. If it is on Ubuntu 64 I wouldn’t know where the problem might be.
As a workaround, does “ip link set wlan0 down; sleep 1; ip link set wlan0 up” work?
If it does revive the WiFi link, then perhaps you can shove these commands in /etc/rc.local temporarily...
Will give that a shot when i get the chance. Thanks!

ikk
Posts: 55
Joined: Sat Feb 09, 2019 12:39 am

Re: wlan0 disappears after updating packages in ubuntu server on rpi 4B [ ubuntu server 64bit ]

Sat Aug 24, 2019 5:38 pm

thatchunkylad198966 wrote:
Fri Aug 16, 2019 10:48 am
Or not use a "beta" release of Ubuntu and wait for the official release.
You're bound to have problems.

Just use Raspbian Buster lite.
I don’t think you’ve read through the thread 😛

I’ve stated that the issue somehow passed on to raspbian buster with desktop... which makes no sense as it’s in a completely different mocroSD card and it worked perfectly before.

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