On Feb 16, 2007, at 1:17 PM, Hans Verkuil wrote: > <snip> > > The cx23415/6 Conexant chips don't have a very good DMA engine and > certain situations can cause it to do strange things and ultimate > hang. > Using a CPU frequency changer application is one know problem. RAID is > another. Whether or not it will affect you seems to depend on magic, > although VIA chipsets seem to be more prone to it than others. > > Interestingly, the PVR500 is immune to these problems, almost > certainly > because it has a PCI bridge, which seems to isolate the conexant chip > from any unpleasantness. (Immune provided you use the 0.10.0rc1 driver > or up, older drivers can still hang the PVR500).
Although it would most certainly screw up the way a card fits into the machine's chasis, would purchasing an Active PCI Riser Card (ie PCI Bridge) and putting one's PVR-350 on it help reduce the incidence of these problems? > I'm not sure whether interrupts are really a problem here. But I would > try to give the PVR350 an interrupt of its own (or at least, not > sharing any of the ide interrupts). To be honest, I think it is the > RAID array that is the culprit. Switching to using the harddisks 'as > is' would probably solve it. > - Rick _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
