Langstone Update 28/05/20

Forum for discussion about the Langstone Microwave Transceiver that shares some features with the Portsdown. Wiki: https://wiki.microwavers.org.uk/Langstone_Project
G4FKK
Posts: 55
Joined: Sun May 05, 2019 12:15 pm

Re: Langstone Update 28/05/20

Post by G4FKK » Thu Jun 04, 2020 5:38 pm

Hi Colin,

Not sure if you can help but this afternoon my Langstone stopped working. I'd had a couple of 4m QSOs earlier and then left the Langstone on receive while I did some other work in the shack. The audio stopped first, closely followed by the waterfall and the GUI was non-responsive to screen touches or mouse input.

I used puTTY and I was able to log in as usual. I then CD'd to Langstone and typed ./stop. Portsdown then started up and, as far as I could tell, was working normally - I only did a couple of quick tests including using the stream viewer. I shut down the Pi from the Portsdown menu and cycled the power. Langstone came up with sound and waterfall but after a few (4 maybe), seconds conked out again.

I carried out a few more shutdowns/powercycles but all with the same result.

Next I went back in via puTTY and typed ps -ax. This seemed to indicated that all three programs were running but, on further inspection, seemed to show that Lang_TX.py was the only one actually clocking up any run time. I killed the programs as per your Debugging Notes and started them again. Same result; works for a few seconds and then stops.

I also tried updating from github but, again, same result when booting up. Swapping the sound card made no difference either.

My next plan is to start again from scratch but I'll leave things as they are in case there are any other tests you'd like me to try?

I'm running on a 2GB Pi 4. There's 1.5GB free and only around 3GB of the 32GB SD card used. The swap memory is ((MB with 0% used.

73, Martin - G4FKK

G4FKK
Posts: 55
Joined: Sun May 05, 2019 12:15 pm

Re: Langstone Update 28/05/20

Post by G4FKK » Thu Jun 04, 2020 5:40 pm

That should say 99MB - doh!

G4FKK
Posts: 55
Joined: Sun May 05, 2019 12:15 pm

Re: Langstone Update 28/05/20

Post by G4FKK » Thu Jun 04, 2020 5:49 pm

Forgot to add: I tested the Pluto on the PC running SDR Console - all ok, Similarly both soundcards ok on another Pi 4.

oe6rke
Posts: 9
Joined: Wed Apr 03, 2013 3:16 pm

Re: Langstone Update 28/05/20

Post by oe6rke » Thu Jun 04, 2020 8:37 pm

hello all,

can confirm this issue. had it first after updating the Software via update. after that no waterfall and stopping Audio Right 5 sec from start, no reaction via touch.
Did Restart with a clean Image.
prepareded all first with update, upgrade, dist-upgrade and installed like the given sequence form here.
https://github.com/g4eml/Langstone

Did the first test according Troubleshooting with no issue but behaviour as described.
Then i fetched a clean instance via git and kicked in ./build with same result.

As lastest Resort i tried the build with portsdown, but all the same.

i guess some lib of the update on os Level changed the mouse or keypad Driver since console logon via Network is working perfect.
syslog and Messages log are not given a reason for this stuff. to sort out Hardware i've using two sdcards and also did a Display test on a full buster with correct touch behaviour.

as like as the other om i'm using a pi4 2 meg Version. used the versions until the todays update for two weeks without issues on unchanged Hardware..

hope the reason could be found since i've now clue how to gain back Control on the device,

br Robert, 73 de oe6rke

update after editing:
i tried a local copy of the Langstone Code i took an week ago with sam results. so in my opinion something linked into or updated by raspi.
tried to install the stuff without updating, but no luck. the os did'nt even start..:(
Portsdown A27 is working (build today with reponsive gui). so kinda mouse Driver possibly..

if i can support with logs pse let me know

G4FKK
Posts: 55
Joined: Sun May 05, 2019 12:15 pm

Re: Langstone Update 28/05/20

Post by G4FKK » Thu Jun 04, 2020 10:27 pm

Hi Robert,

Interesting to hear you're also experiencing the same problem. I've just been chatting to Chris, G4SDG, on QO100 and he's suffering exactly the same effects too. I was beginning to think something had let out some magic smoke on my Pi but it does sound as if it's a system update that's upsetting the Langstone.

For what it's worth, I get the following message when I restart the GUI following the Debugging Notes...

Warning: The blks2.selector block is deprecated.
gr::log :INFO: audio source - Audio sink arch: alsa
len(audio_taps) = 231
ERROR: WRITE ALL -9

Right - time for bed. Goodnight all,

73, Martin - G4FKK

G4FKK
Posts: 55
Joined: Sun May 05, 2019 12:15 pm

Re: Langstone Update 28/05/20

Post by G4FKK » Thu Jun 04, 2020 10:28 pm

Oh, and I forgot to add that I rebuilt a new SD card from scratch with the same results.

G8GKQ
Site Admin
Posts: 1753
Joined: Sun Mar 22, 2009 1:21 pm

Re: Langstone Update 28/05/20

Post by G8GKQ » Fri Jun 05, 2020 8:16 am

Yes, there have been some major changes to the Raspbian operating system over the last week. They have broken some of the Portsdown features as well.

Please be patient while Colin and I develop fixes for both Portsdown and Langstone, We have other priorities and committments as well.

Dave, G8GKQ

G8GKQ
Site Admin
Posts: 1753
Joined: Sun Mar 22, 2009 1:21 pm

Re: Langstone Update 28/05/20

Post by G8GKQ » Fri Jun 05, 2020 8:39 am

So, in the meantime, please do not update your Langstones or Portsdown A27s - you'll break them. New builds are not possible either.

Dave

g4eml
Posts: 252
Joined: Thu Apr 26, 2018 9:36 am

Re: Langstone Update 28/05/20

Post by g4eml » Fri Jun 05, 2020 9:17 am

I have not made any changes to the Langstone code for a while now so, as a Dave says, it must be down to a system update. I will have a look later today and see if I can reproduce and identify the problem.

Colin.

G4FKK
Posts: 55
Joined: Sun May 05, 2019 12:15 pm

Re: Langstone Update 28/05/20

Post by G4FKK » Fri Jun 05, 2020 10:57 am

Thanks Dave and Colin,

I know you're busy so very happy to wait for your expert eyes to do their stuff :)

Just a quick query though; does the Pi update by itself if it's connected to t'internet? I ask because I haven't done any Pi updates for at least a couple of weeks and my Langstone was working perfectly happily for several days when it suddenly decided to stop entertaining me.

73, Martin - G4FKK

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