while starting xawtv i get following:

This is xawtv-3.94, running on Linux/i686 (2.6.9-1.667)
WARNING: Your X-Server has no DGA support.
WARNING: couldn't find framebuffer base address, try manual
configuration ("v4l-conf -a <addr>")
Warning: Cannot convert string "-*-ledfixed-medium-r-*--39-*-*-*-c-*-*-*" to type FontStruct
ioctl: VIDIOC_OVERLAY(int=1): Invalid argument
Mutex destroy failure: Device or resource busy
ICE default IO error handler doing an exit(), pid = 7716, errno = 0
ICE default IO error handler doing an exit(), pid = 7738, errno = 0

dmesg reports:

Linux video capture interface: v1.00
bttv: driver version 0.9.15 loaded
bttv: using 8 buffers with 2080k (520 pages) each for capture
bttv: Bt8xx card found (0).
ACPI: PCI interrupt 0000:00:0a.0[A] -> GSI 11 (level, low) -> IRQ 11
bttv0: Bt878 (rev 17) at 0000:00:0a.0, irq: 11, latency: 32, mmio: 0xea000000
bttv0: using: *** UNKNOWN/GENERIC *** [card=0,autodetected]
bttv0: gpio: en=00000000, out=00000000 in=00ffffff [init]
bttv: readee error
bttv0: using tuner=-1
bttv0: i2c: checking for MSP34xx @ 0x80... not found
bttv0: i2c: checking for TDA9875 @ 0xb0... not found
bttv0: i2c: checking for TDA7432 @ 0x8a... not found
bttv0: registered device video0
bttv0: registered device vbi0
bt878: AUDIO driver version 0.0.0 loaded
bt878: Bt878 AUDIO function found (0).
ACPI: PCI interrupt 0000:00:0a.1[A] -> GSI 11 (level, low) -> IRQ 11
bt878(0): Bt878 (rev 17) at 00:0a.1, irq: 11, latency: 32, memory: 0xea001000
ACPI: PCI interrupt 0000:00:10.3[D] -> GSI 11 (level, low) -> IRQ 11

tvtime is getting no signal

apparently something is not right, what should i do to watch TV programs?