f-myth-users at media
Apr 7, 2012, 11:34 PM
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Kernel Crash when starting up in au0828-video.c line 895
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> Date: Sat, 07 Apr 2012 20:56:23 -0400
> From: Mark Lord <mythtv [at] rtr>
> I should add that, even with the above workarounds, there is STILL an issue
> when mythbackend starts up: If you have "multi-rec" enabled (more than one
> virtual tuner per physical HVR-950Q), then the backend will have several
> near-simultaneous "tune to initial channel" calls into the drivers.
> This will cause tuner failure.
I haven't been following this thread closely (not my hardware), but
would it be possible to tune using an external tuner script that uses
a mutex and some sleeps to avoid simultaneous tunes? I have no idea
if the way multirec tunes this hardware is amenable to breaking it
out externally like that.
I actually do something like this with Motorola STB's being tuned
through their serial ports. I discovered experimentally that
commanding more than 2 USB-serial devices causes garblage among
them,* so I wrote a script that only allows 2 simultaneous tunes to
happen---if there are 3 queued, the third waits until one of the first
two finishes, then gets to happen, etc. Works great. But I don't know
if your tuner is amenable to being controlled via an external script.
* No idea where in the stack this is happening, or if it's the USB
hub, or something else, and since it was very old code anyway I
figured it'll probably go away on an upgrade, so writing the script
was quick & easy.
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