In my experience, the 350 locks up when you do stuff with the framebuffer while watching TV or a recording, like FF and REW (how it pops up the OSD overlay thingy to tell you where you're at)... If you're in an SSH session, you can unlock the box with a simple enter at the cmd prompt. This is on slower machines (533-667 range). I have not tried on a newer/faster board yet, as I just got a little frustrated at my mythbox and figured I'd let my head cool before moving the hardware to a different box... In any case, I think ivtv and mythtv are stable, and we know Linux is reasonably stable, but there is a certain combination of either hardware (some VIA chipsets are known bad?) and software/drivers/etc that cause some flakiness using the PVR-350's output.
I am super frustrated too, because I bought the 350 because of MythTV's specific support for it, and the lower CPU requirement. What I'm now finding out, is I still have to buy a faster system so it will work (without locking up). I didn't need the TV out nVidia features like games, etc, but it looks like that's where I'll be at to make things work. I don't have a VIA chipset, it's an Intel motherboard and a P3-667. I've tried every "current" version of IVTV, up until v0.3.2d. Haven't tried the new e release yet. It has some vsync timing stuff I'm interested in seeing if it fixes the problems I'm having... I upgraded my kernel to 2.6.10, since I have one of the "new" tuners, a Type 47. Thinking that would help, it only caused me lots of work converting the system to modprobe.conf..blahblahblah. Still same lockups. Compiled MythTV 0.17. For the hell of it, can't use the box, midas well try that to. No effect. I still have no working mythbox... not that I'm a whole lotta help, just offering up what I've tried thus far. I'd be willing to accept that it's my hardware, except that a friend on a completely different system with the same PVR-350 card as me (Tuner=47) has the SAME EXACT problem. We both blame ivtv's (mis)handling of dma, but are too ignorant to make that claim for real or even figure it out and fix it if it really is the case. I still haven't found someone with a low end (sub 1Ghz) machine and a PVR-350 Tuner =47, so sorta says to me it can't be done. I've found plenty of people experiencing the lockups with newer versions of ivtv though... One workaround that we've figured out is to put the X server output on a monitor, and just use MythTV's PVR-350 output support to watch TV/recordings. That stops the lockups completely. Makes you think it's the ivtv / X / framebuffer output, huh? Says to me, it's not hardware like the software guys would have you believe... :) -Kenneth
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