bttv-0.7.61+xawtv-3.41: artefacts on 1st and last line

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Hi,

the 1st line of the tv picture is constantly dashed here, e.g.
 - - - -- -  -- --  - - -- --           ----------------------

This is a cosmetic problem but nevertheless annoying !
I think this problem existed since the early days of bttv.

Do others see this artefact, too?
Any clueful hints on causes for this?

Regards, Gunther


P.S.
Further data/Kind-of-Workaround:
When switching to "grabdisplay" in the default size 384x288
the line is fine (and the pictures increases sligtly in size,
both horizontal and vertical) !

This does not help as soon as vsize>288, so this could be
a subtle scaling problem in the BTTV-Risc code or similar?

 Side note: With "grabdisplay" unfortunately the last line is wrong:-(
 |       -------------------                                     |

The artefacts combination depends on the tv channel selected:
RTL (CH60) in the only channel without artefacts, here!

dmesg-Output:

bttv: driver version 0.7.61 loaded
bttv: using 2 buffers with 2080k (4160k total) for capture
bttv: Host bridge needs ETBF enabled.
bttv: Bt8xx card found (0).
PCI: Found IRQ 11 for device 00:0c.0
PCI: The same IRQ used for device 00:0c.1
bttv0: Bt878 (rev 2) at 00:0c.0, irq: 11, latency: 32, memory: 0xe2000000
bttv0: subsystem: 0070:13eb  =>  Hauppauge WinTV  =>  card=10
bttv0: model: BT878(Hauppauge new (bt878)) [autodetected]
bttv0: enabling ETBF (430FX/VP3 compatibilty)
bttv0: Hauppauge msp34xx: reset line init
i2c-dev.o: Registered 'bt848 #0' as minor 0
msp34xx: init: chip=MSP3410D-B4, has NICAM support
msp3410: daemon started
bttv0: i2c attach [MSP3410D-B4]
i2c-core.o: client [MSP3410D-B4] registered to adapter [bt848 #0](pos. 0).
tuner: chip found @ 0x61
bttv0: i2c attach [(unset)]
i2c-core.o: client [(unset)] registered to adapter [bt848 #0](pos. 1).
i2c-core.o: adapter bt848 #0 registered as adapter 0.
bttv0: Hauppauge eeprom: model=61334, tuner=Philips FM1216 (5), radio=yes
bttv0: i2c: checking for MSP34xx @ 0x80... found
bttv0: i2c: checking for TDA9875 @ 0xb0... not found
bttv0: i2c: checking for TDA7432 @ 0x8a... not found





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