On 7/11/20 5:31 AM, jr wrote:
> hi,
> 
> William F Pokorny <ano### [at] anonymousorg> wrote:
>> ...
>> In my povr/POV-Ray use all three display options still have issues with
>> x11 being the worst behaving. The x11 and SDL1.2 options suffer from
>> occasional hangs requiring a kill command to stop with x11 being worse.
> 
> have still not seen any "hangs", but managed to get an error; when beginning
> render of 2nd frame in animation.
> 
> povr +L/usr/local/share/povray-3.8/include +a0.1 +w960 +h720 \
>          +o/tmp/render/frm_ +iTorusKnotMinimal35.pov +kc +kfi0 +kff359
> 
> ....
> X error: BadLength (poly request too large or internal Xlib length error)
> .... [message repeats another eight times]
> [xcb] Unknown sequence number while processing queue
> [xcb] Most likely this is a multi-threaded client and XInitThreads has not been
> called
> [xcb] Aborting, sorry about that.
> povray2: xcb_io.c:259: poll_for_event: Assertion
> `!xcb_xlib_threads_sequence_lost' failed.
> /home/jr/bin/povr: line 14: 845235 Aborted    ${INSTALLDIR}/bin/povray2 -y x11
> $@
> 
> 
> regards, jr.
> 

Thanks. I've not done any animations with the x11 display. I'll try it 
myself later today. I'd make a moderate bet from your output it's again 
the architectural problem of x11/sdl* not being at the top thread-wise, 
so to speak.

Bill P.

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