The Pi is operating on 5.25V and the low voltage lightning symbol never appears. Today, I have completely rewritten the card with the latest software.
I have been told that this problem occurs if the Minitioune board is unpowered or not correctly connected by USB. Minitioune is correctly powered. I have plugged it into a PC with Minitioune software and it works well. I have tried two different USB cables which are quite short and they both work well.
G4BVK has had similar issues with "Longmynd not loaded" coming up at times. I am out of things to try now and hope that perhaps the experts can shed some light on this problem.
This sounds like longmynd crashing for some reason or outputting an unexpected error. Can you reproduce it reliably? as it should output some debugging information when it crashes if you run it directly.
To run it directly shutdown the app from the power menu then run the following from the ssh console.
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cd /home/pi/ryde python3 -m rydeplayer /home/pi/ryde/config.yaml
The relevant bit turns out to be the bit at the end:
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Flow: No-data timeout, re-init config. Flow: Config cycle: Frequency  = 1249000 KHz, Symbol Rate  = 2000 KSymbols/s Flow: NIM init Flow: STV0910 init Flow: stv0910 init regs Status: STV0910 MID = 0x51, DID = 0x20 Flow: STV0910 set MCLK Flow: Setup equlaizers 1 Flow: Setup carrier loop 1 Flow: Setup timing loop 1 Flow: Tuner init Flow: Tuner cal lowpass Flow: Tuner set freq Status: tuner:0, f_vco=0x261dd0, icp=0x1, f=0x22222, n=0xa6, rdiv=0x1, p=0x0, freq=1249000, cfhf=4118 ERROR: tuner wait on lock timed out ERROR: Tuner set freq 1249000 ERROR: Failed to init Tuner 1249000, 0 ERROR: failed to init a device - is the NIM powered on?
How long does it take to fail usually? Is there anything unusual about your hardware setup? Just trying to work out if I can make my pi do it.