there seems to be a problem going around where mythtv is failing to record shows (on DVB tuners) and recording that the show HAS been recorded, but with a zero byte file size.
I have had this happen on my machine, which is currently running mythbuntu 12.10 64 bit.
When it happens on my machine, further recordings and live tv all fail too.
A quick google gives me the following impression.
- This seems to happen when folks have multiple DVB tuners.
- setting "quick tuning" to always may help.
- altering the vmalloc of your kernel may give the DVB cards more headroom? (perhaps multiple tuners, along with nvidia graphics blobs can quickly use up the default 128M?)
so, as I am in category 1, I have tried fixes 2 and 3. incidentally, fix 3 should be done in this manner for most grub2 based distros.
sudo nano /etc/default/grubchange the line which looks this (you may have other options already like splash)
GRUB_CMDLINE_LINUX_DEFAULT="quiet"by appending vmalloc=512M ie..
GRUB_CMDLINE_LINUX_DEFAULT="quiet vmalloc=512M"then save & run
I've done this.. I'll let you know if it doesn't work (might be 2 weeks before the next program is missed, and I'll bet it is my wife's favourite gardening program again)