Mythtv what is causing empty (0 kb) recordings

Question

Does anyone have the same problem or an answer to what is causing empty recordings in mythtv? It also freezes up the backend when it occurs and a reboot seems to be the only thing to help. This problem occurs randomly during recordings.

I have 3 pci DVB-T cards: 2 * TerraTec Cinergy 1200 DVB-T and 1 * Satelco Easywatch PCI DVB-T

Answer 1

I have 3 DVB cards and I was seeing zero byte recordings (no system freeze though). I fixed it by adding the

vmalloc=192M

kernel parameter to the grub command line that boots the system. See this thread

for some discussion on it.