Problems with xv and 4.2.0

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Hi there, 

I am using the bttv driver from kernel 2.4.17, and XFree86 4.2.0 with a
TVCapture 98 card from AverMedia and the v4l module for XFree86. The card
works great, but if I increase the vertical geometry of xawtv to a number
greater than 10, the image is compressed vertically to show only about
half the real image. I guess that with this value, the resolution starts
being greater than 480 and the driver, that should start showing both
fields, get lost.

This only happens if I set the TV norm to PAL-M, which we use here in
Brazil. If I set it to NTSC, it works Ok, but then, of course, the colors
are not correct (B&W). I guess the v4l palm driver is the responsible.

I can give more details if requested.

Driver output:
Linux video capture interface: v1.00
i2c-core.o: i2c core module
i2c-algo-bit.o: i2c bit algorithm module
bttv: driver version 0.7.83 loaded
bttv: using 2 buffers with 2080k (4160k total) for capture
bttv: Host bridge is VIA Technologies, Inc. VT8363/8365 [KT133/KM133]
bttv: Bt8xx card found (0).
PCI: Found IRQ 10 for device 00:0d.0
bttv0: Bt878 (rev 2) at 00:0d.0, irq: 10, latency: 32, memory: 0xe9000000
bttv0: detected: AVermedia TVCapture 98 [card=13], PCI subsystem ID is
1461:0002
bttv0: using: BT878(AVerMedia TVCapture 98) [card=13,autodetected]
i2c-core.o: adapter bt848 #0 registered as adapter 0.
bttv0: Avermedia eeprom[0x4002]: tuner=2
bttv0: i2c: checking for MSP34xx @ 0x80... not found
bttv0: i2c: checking for TDA9875 @ 0xb0... not found
bttv0: i2c: checking for TDA7432 @ 0x8a... not found
tvaudio: TV audio decoder + audio/video mux driver
tvaudio: known
chips: tda9840,tda9873h,tda9874a,tda9850,tda9855,tea6300,tea6420,
tda8425,pic16c54 (PV951)
i2c-core.o: driver generic i2c audio driver registered.
i2c-core.o: driver i2c TV tuner driver registered.
tuner: chip found @ 0xc2
bttv0: i2c attach [client=Philips NTSC,ok]
i2c-core.o: client [Philips NTSC] registered to adapter [bt848
#0](pos. 0).
bttv0: PLL: 28636363 => 35468950 ... ok


-- 
Roberto Jung Drebes <drebes@xxxxxxxxxxxx>
Porto Alegre, RS - Brasil
http://www.inf.ufrgs.br/~drebes/





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