[winswitch] Xpra - Test system works, production dies??? No server - but program runs???

[Antoine Martin]

(..)
> Hardware is different between systems, no fancy video cards in either,
> both actually have some generic AMD sludge. These are not super current
> systems, the working system is probably 5-6+ years old, but maxed out in
> RAM, 6 core CPU etc.. XPRA and this works, so I was ready to get to work
> with it...  The other, production, is a SoC type board (NOT A PI! AMD
> A10 based 4 core).
> 
> The only think I can find that is different software wise is KERNELS
> 
> Working:
> Linux xxxp6633w 5.8.0-55-generic #62~20.04.1-Ubuntu SMP Wed Jun 2
> 08:55:04 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
> 
> NON working
> Linux xxxxSDRBox 5.4.0-77-generic #86-Ubuntu SMP Thu Jun 17 02:35:03 UTC
> 2021 x86_64 x86_64 x86_64 GNU/Linux
> 
> 
> Everything else between the two is the same for the OS. Both have had
> updates to be as current as the Canocial repos are offering in the OS.
At this point, my guess is that something hardware related is hanging
and we've just had a few reports of problems with the ffmpeg vaapi
hardware accelerated encoder:
https://github.com/Xpra-org/xpra/issues/3174

If that's the cause of your problem, you can run with:
xpra start --env=XPRA_VAAPI=0 ....

Or even skipping any codec with hardware access:
xpra start --video-encoders=all,-ffmpeg,-nvenc

Video encoders are the only components that access the hardware somewhat
more directly than through generic OS APIs.

> What debug logs do you need to track???
As always, the server log.

Since I suspect that the codecs are the problem, the output of:
xpra encoding

> The funny thing is that the PROGRAM will RUN on the "NON 'WORKING' "
> system in that it operates as expected, but you can NOT CONNECT TO THE
> GUI via the new X server.
That's because the X11 virtual framebuffer is running, and your program
is happily running on it, but the xpra server has crashes or is
unresponsive.

Cheers,
Antoine
> Start up command:
> xpra start :100 --start=/home/X0/050a6/XXXX/bin/run-program
> 
> Program name is obfuscated for reasons, I will provide privately, but
> not in public right now.
> 
> I will provide more data as requested, and asked for, I am not dumping
> useless data to the list to sift through, I'd rather ask first, and
> provide the targeted data to resolve this hopefully.
> 
> What data, logs, etc. would you like?
> 
> Nothing jumps out at me as to what might be the difference other than
> the kernels... The program runs, it does its thing, you just can not
> connect to the GUI X Server from Xpra to control it.
> 
> Thanks for your time and insight.
> 
> 
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