On Mar 7, 2007, at 5:17 PM, Daniel Polak wrote:
> Since my earlier problems (no video output on TV) were solved I've not
> managed get reliable playback with MytTV 0.20 and my PVR350 on FC6.
> Recording is fine and the frontend is displaying ok on the TV.
> But when I try to view recorded content the system freezes and I
> have to
> use the on/off switch to recover.
>
> Any idea what is causing this?
>
> installed modules:
> <snip>
> dmesg:
> <snip>
> /var/log/messages:
> kernel: ivtv0 warning: Could not get result
> (CX2341X_OSD_GET_OSD_COORDS)
Is this the very first indication of trouble in your logs? It would
be helpful if you could paste some earlier context, because many
times the first error can lead to a totally different second error.
> kernel: ivtv0 warning: No free mailbox found
> (CX2341X_OSD_SET_GLOBAL_ALPHA)
> kernel: ivtv0 warning: Clearing mailbox 0: cmd 0x0000000b flags
> 0x00000004
> kernel: ivtv0 warning: Clearing mailbox 1: cmd 0x00000047 flags
> 0x00000003
> kernel: ivtv0 warning: No free mailbox found
> (CX2341X_OSD_SET_CHROMA_KEY)
> ...
What happens when you try to `dd if=/dev/video0 of=/dev/video16` ?
Could you try loading ivtv-fb by hand (ie `rmmod ivtv-fb` then
`modprobe ivtv-fb osd_compat=1`) and then using MythTV?
There are tons of old threads on similar issues where the firmware
becomes nonresponsive and it can't find free mailboxes. Doing a
google search on "ivtv no free mailbox found" turned up quite a few
past users problems, including:
- cpuspeed / powersave daemon
- failing power supply
- broken hauppauge PVR- card (does your card work in windows?)
- RAID array present
- PCI latency timings (see the gentoo article for good ways to tweak
them)
- IRQ conflicts (`cat /proc/interrupts`)
- try disabling SMP
Try some of those, let us know what you find. It is important to test
the card in windows if all else fails.
- Rick
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