I had exactly the same problem with FC3, I fixed it by using the TV 
out on the PVR 350 *BEFORE* loading the ivtv-fb module.

I did this by writing a ivtv startup script that loaded ivtv,
changed the channel (I found the driver errored lots if I didn't)
then did a dd if=/dev/video0 of=/dev/video16 bs=64k then killing it 
after 5 sec.

To be honest though I've given up on FC3, went to SuSE9.1[1] and haven't

looked back :-)

HTH

David

[1] More grief in theory (ivtv and mythtv aren't in any of the suse apt
sources 
I found for example) but I got a fully working stable (so far) mythtv
box in 
about 10 hours[2].
[2] Aka 9 hours of downloading and compiling, one hour of work[3] :-)
[3] In fairness this would have been *much* longer if I hadn't already
built
a FC2 and FC3 version on the same hardware.

> -----Original Message-----
> From: [EMAIL PROTECTED] 
> [mailto:[EMAIL PROTECTED] On Behalf Of 
> John Harvey
> Sent: 05 January 2005 21:14
> To: [email protected]
> Subject: RE: [ivtv-devel] Fedora Core 3
> 
> 
> I don't believe it's the x-driver. It is more likely to be 
> the ivtv osd driver.
> 
> The top bottom half thing comes from the x driver splitting 
> large updates into 2. So the 1st one has worked and the 
> second on failed for some reason. Turn full ivtv logging on 
> and send me your messages file at the point it fails if you like. 
> 
> The most likely cause is that there is a loop where the osd 
> code tries to gain access to the dma engine and waits until 
> it can get access. This can block indefinitely if something 
> goes wrong and the x server is blocked in the ioctl waiting 
> for it to happen. 
> Maybe we should return from this loop after a short time (1 
> minute or so) with a failure since something has gone 
> horribly wrong when that happens.
> 
> There is debugging for this happening something like Reg 
> Status ....... But the decoder debugging needs to be on to show it.
> 
> John
> 
> > -----Original Message-----
> > From: [EMAIL PROTECTED] [mailto:ivtv-devel- 
> > [EMAIL PROTECTED] On Behalf Of Quentin Conner
> > Sent: 05 January 2005 20:50
> > To: [email protected]
> > Subject: RE: [ivtv-devel] Fedora Core 3
> > 
> > 
> > I'm currently working on FC3 as well and successful with 
> MythTV other 
> > than the OSD Framebuffer feature on the PVR-350.
> > 
> > This PVR-350 IVTVDEV driver with Xorg doesn't work for me on 2.6.9 
> > with Xorg 6.8.1.  After starting/stopping X on my CLE266 
> chipset (KDE 
> > via
> > gdm) a few of times the IVTVDEV FB driver *may* work with X 
> restarted
> > against the PVR-350 FB.  When the IVTVDEV FB doesn't work I see the
> > composite display wipe the top half of the display to 
> black;  the bottom
> > half retains it's original pattern;  the X cursor displays in the
> > middle;  keyboard is locked up.
> > 
> > Since I am only a couple of weeks into this exercise I can't offer 
> > much more at this time other than I am thinking about 
> trying another 
> > distribution (suspect kernel version and/or Xorg 
> distribution).  I've 
> > tried the 2.6.10 FC4 development kernel as well as played 
> with my own 
> > FC3 based kernels (stripped down to eliminate other modules).
> > 
> > If anyone has suggestions how to debug the ivtvdev driver (need to 
> > find the source to start with), how to use the fbdev FB X 
> driver, or 
> > knows which of the ivtvdev_drv.o Framebuffer object files 
> from badzzzz 
> > or Chris Kennedy 0.2 or 0.3 genre are supposed to work with 
> Xorg and 
> > 2.6.9., please let me know.
> > 
> > Thanks,
> > 
> > Quentin
> > 
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On Behalf Of D. 
> > Hageman
> > Sent: Wednesday, December 29, 2004 5:19 PM
> > To: [email protected]
> > Subject: [ivtv-devel] Fedora Core 3
> > 
> > 
> > I upgraded my PVR box to Core 3 recently and I am having 
> issues with a 
> > couple of items.
> > 
> > 1) The driver series greater then 0.3.1r give me errors such as:
> >     ivtv: OSD: DMA xfer from 0xb7efb7d8 of 655360 bytes failed with
> > (-512) offset = 0x000b17d0, total 1382352
> > I noticed that in 0.3.1s a patch was added to fix DMA issues in 
> > kernels above 2.6.8.  Apparently the stock fedora kernels 
> don't have 
> > whatever issue was being addressed.
> > 
> > 2) The only drivers I have been able to get work with 
> MPlayer's ivtv 
> > patch is 0.3.x series.  All other drivers seem to complain about 
> > invalid arguments to mmap'ing the device and then I get 
> errors about 
> > "Error with
> > 
> > sending DMA to ivtv".  This has been mentioned several 
> times before on 
> > this list without resolution.
> > 
> > 3) The mythtv backend (0.16 and cvs) will segfault (without core) 
> > after an hour of recording (two 30 minute programs).  I don't think 
> > this is entirely a fault of mythtv on Core 3.  I have tried 
> debugging 
> > the backend a
> > couple of times unsuccessfully, but when I have ... I have 
> caused the
> > ivtv
> > driver to start complaining about ivtv: "ENC IRQ OVERFLOW: #4007
> > Stealing
> > a Buffer, 320 currently allocated"  I think some condition 
> that ivtv is
> > creating under Core 3 is unexpected in the mythbackend.  If 
> anyone is
> > running mythtv and core 3, please let me know what kernel, driver
> > version,
> > etc you are using.  I will continue to investigate on this end.
> > 
> > 
> > //========================================================\\
> > ||  D. Hageman                    <[email protected]>  ||
> > \\========================================================//
> > 
> > 
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> > 
> > 
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