[mythtv-users] Consistent flicker with ivtv-fb + PVR-350 decoding

[Al McIntosh]

Stefan Haflidason wrote:

> On 3/4/06, *Al McIntosh* <junkmail at allanmcintosh.com 
> <mailto:junkmail at allanmcintosh.com>> wrote:
>
>     Stefán Hafliðason wrote:
>
>     >Hi all,
>     >
>     >I'm using mythtv 0.19 with a PVR-350. Recently, I think since I
>     upgraded
>     >to 0.19, I have been getting a constant flickering when watching
>     live tv
>     >through the tuner or s-video inputs. The flickering might be better
>     >described as a fairly regular flash of black.
>     >
>     >I am also getting the following errors many times in
>     /var/log/messages:
>     >
>     >ivtv0 warning: prep_user_dma: SG_length 400 page_count 400 still
>     full?
>     >ivtv0-osd warning: ivtvfb_prep_dec_dma_to_device, Error with
>     >get_user_pages: 1638400 bytes, 400 pages returned
>     >ivtv0-osd warning: Error: prep osd dma to device rc=-5
>     >ivtv0-osd warning: DMA xfer from b7318008 of 1638400 bytes failed
>     with
>     >(-5) offset = 0x0, total 1638400
>     >
>     >I am currently running:
>     >
>     >kernel 2.6.10-r9 (Gentoo),
>     >PVR-350,
>     >ivtv 0.4.2 - I have just tried 0.4.0, no difference
>     >
>     >The flickering only occurs when using the PVR-350's decoder to watch
>     >something on either input (currently static on the tuner (limited
>     access
>     >to aerial) and tv-out from another computer on the s-video input).
>     >Watching a previous recording (with no flicker) works fine.
>     >
>     >Thanks,
>     >
>     >Stefan.
>     >
>     >
>     >
>     >
>     >
>
>     You may consider taking this topic over to ivtv mailing lists.
>
>
> Will do; apologies for the mis-posting.


I don't think apologies are required. Was thinking for your sake you may 
get better results. :)