[mythtv-users] IVTV started reporting numerous warnings and liveTV and recording breaks frequently

[Abhi]

Suddenly I started seeing a lot of warnings, such as
ivtv0 warning: prep_user_dma: SG_length 336 page_count 336 still full?
ivtv0-osd warning: ivtvfb_prep_dec_dma_to_device, Error with 
get_user_pages: 720896 bytes, 336 pages returned
ivtv0-osd warning: Error: prep osd dma to device rc=-5
ivtv0-osd warning: DMA xfer from b7e4a808 of 720896 bytes failed with (-5) 
offset = 0xa1800, total 1382400

I am using PVR-350 TV-out. Even switching back to the TV-out on my Pundit 
does not help.

MythTV has become extremely unstable, freezing every 10-15 minutes and 
choppy video, etc...

I upgraded ivtv* from 0.6.1 to the 0.7-111 from atrpms, but it did not help.
Any Ideas. I have searched the archives and seen emails with similar 
issues, but no solutions
So its either
trivial and a no-brainer to fix this, hence, not worthy of replying to 
those emails
or
nobody knows

thanks
- Abhi


> uname -a
Linux stokes 2.6.16-1.2096_FC4 #1 Wed Apr 19 15:27:46 EDT 2006 i686 i686 
i386 GNU/Linux

> rpm -q ivtv
ivtv-0.7-111.rhfc4.at

> dmesg
May  9 01:39:23 stokes kernel: ivtv:  ==================== START INIT IVTV 
====================
May  9 01:39:23 stokes kernel: ivtv:  version 0.7.0 (development snapshot 
compiled on Sun Apr 23 00:04:16 2006) loading
May  9 01:39:23 stokes kernel: ivtv:  Linux version: 2.6.16-1.2096_FC4 686 
REGPARM 4KSTACKS gcc-4.0
May  9 01:39:23 stokes kernel: ivtv:  In case of problems please include 
the debug info between
May  9 01:39:23 stokes kernel: ivtv:  the START INIT IVTV and END INIT IVTV 
lines, along with
May  9 01:39:23 stokes kernel: ivtv:  any module options, when mailing the 
ivtv-users mailinglist.
May  9 01:39:23 stokes kernel: ivtv0: Autodetected Hauppauge WinTV PVR-350 
card (cx23415 based)
May  9 01:39:23 stokes kernel: ACPI: PCI Interrupt Link [LNKB] enabled at 
IRQ 10
May  9 01:39:23 stokes kernel: ACPI: PCI Interrupt 0000:00:0e.0[A] -> Link 
[LNKB] -> GSI 10 (level, low) -> IRQ 10
May  9 01:39:23 stokes kernel: ivtv0: Unreasonably low latency timer, 
setting to 64 (was 32)
May  9 01:39:23 stokes kernel: tveeprom 0-0050: Hauppauge model 48132, rev 
K168, serial# 7335412
May  9 01:39:23 stokes kernel: tveeprom 0-0050: tuner model is LG TAPE 
H001F MK3 (idx 68, type 47)
May  9 01:39:23 stokes kernel: tveeprom 0-0050: TV standards NTSC(M) 
(eeprom 0x08)
May  9 01:39:23 stokes kernel: tveeprom 0-0050: audio processor is MSP4448 
(idx 27)
May  9 01:39:23 stokes kernel: tveeprom 0-0050: decoder processor is 
SAA7115 (idx 19)
May  9 01:39:23 stokes kernel: tveeprom 0-0050: has radio, has IR remote
May  9 01:39:23 stokes kernel: tuner 0-0061: chip found @ 0xc2 (ivtv i2c 
driver #0)
May  9 01:39:23 stokes kernel: tda9887 0-0043: chip found @ 0x86 (ivtv i2c 
driver #0)
May  9 01:39:23 stokes kernel: saa7115 0-0021: saa7115 found @ 0x42 (ivtv 
i2c driver #0)
May  9 01:39:23 stokes kernel: saa7127 0-0044: saa7127 found @ 0x88 (ivtv 
i2c driver #0)
May  9 01:39:23 stokes kernel: msp3400 0-0040: MSP4448G-A2 found @ 0x80 
(ivtv i2c driver #0)
May  9 01:39:23 stokes kernel: msp3400 0-0040: MSP4448G-A2 supports radio, 
mode is autodetect and autoselect
May  9 01:39:23 stokes kernel: ivtv0: loaded v4l-cx2341x-enc.fw firmware 
(262144 bytes)
May  9 01:39:23 stokes kernel: ivtv0: loaded v4l-cx2341x-dec.fw firmware 
(262144 bytes)
May  9 01:39:23 stokes kernel: ivtv0: Encoder revision: 0x02040024
May  9 01:39:23 stokes kernel: ivtv0: Decoder revision: 0x02020023
May  9 01:39:23 stokes kernel: ivtv0: Allocate DMA encoder MPEG stream: 128 
x 32768 buffers (4096KB total)
May  9 01:39:23 stokes kernel: ivtv0: Allocate DMA encoder YUV stream: 194 
x 10800 buffers (2048KB total)
May  9 01:39:23 stokes kernel: ivtv0: Allocate DMA encoder VBI stream: 120 
x 17472 buffers (2048KB total)
May  9 01:39:23 stokes kernel: ivtv0: Allocate DMA encoder PCM audio 
stream: 455 x 4608 buffers (2048KB total)
May  9 01:39:23 stokes kernel: ivtv0: Create encoder radio stream
May  9 01:39:23 stokes kernel: ivtv0: Allocate DMA decoder MPEG stream: 16 
x 65536 buffers (1024KB total)
May  9 01:39:23 stokes kernel: ivtv0: Allocate DMA decoder VBI stream: 512 
x 2048 buffers (1024KB total)
May  9 01:39:23 stokes kernel: ivtv0: Create decoder VOUT stream
May  9 01:39:23 stokes kernel: ivtv0: Allocate DMA decoder YUV stream: 24 x 
43200 buffers (1024KB total)
May  9 01:39:23 stokes kernel: ivtv0: loaded v4l-cx2341x-init.mpg firmware 
(155648 bytes)
May  9 01:39:23 stokes kernel: tuner 0-0061: type set to 47 (LG NTSC (TAPE 
series))
May  9 01:39:23 stokes kernel: ivtv0: Initialized Hauppauge WinTV PVR-350, 
card #0
May  9 01:39:23 stokes kernel: ivtv:  ====================  END INIT IVTV 
====================
[...]
May  9 01:39:24 stokes kernel: ivtv0-osd warning: ivtvfb_check_var
May  9 01:39:24 stokes kernel: ivtv0-osd warning: ivtvfb_check_var
May  9 01:39:24 stokes kernel: ivtv0-osd warning: ivtvfb_set_par
[...]
ivtv0 warning: prep_user_dma: SG_length 336 page_count 336 still full?
ivtv0-osd warning: ivtvfb_prep_dec_dma_to_device, Error with 
get_user_pages: 720896 bytes, 336 pages returned
ivtv0-osd warning: Error: prep osd dma to device rc=-5
ivtv0-osd warning: DMA xfer from b7e4a808 of 720896 bytes failed with (-5) 
offset = 0xa1800, total 1382400
ivtv0 warning: prep_user_dma: SG_length 336 page_count 336 still full?
ivtv0-osd warning: ivtvfb_prep_dec_dma_to_device, Error with 
get_user_pages: 720896 bytes, 336 pages returned
ivtv0-osd warning: Error: prep osd dma to device rc=-5
ivtv0-osd warning: DMA xfer from b7e4a808 of 720896 bytes failed with (-5) 
offset = 0xa1800, total 1382400