I have an older 'testing' system which has nvtv 0.4.0-1 and xfree86 4.2.1.
I was having some trouble getting the overscan settings right (modes other
than the predefined ones gave me a corrupted screen), so I tried upgrading
to 0.4.4-1 to see if it improved the situation. I found that with that
version, the underscan area (TV area not occupied by the video image) was
bright purple, whereas before it had been black. This was very disruptive
to viewing. Switching back to 0.4.0-1 brought back the old behaviour.
The hardware is:
GeForce2 MX (01:00.00) (0110) io=0xCE000000
MC_boot=011000B2 FB_boot=00000000 FB_conf=09C10001 EXT_boot=80004C6F
TV setup=00000001 vblank=00000000-00000000 hblank=00000000-00000000
Extra 0x720=00000000 00000000 00000000 00000000
Extra 0x730=00000000 00000000 00000000
PLL coeff=00030700 FP_DEBUG_0=31101111
CRT registers:
00: 59 4F 4F 9D 55 1C 30 3E 00 40 00 00 00 00 00 00
10: F9 2B DF 40 00 DF 31 E3 FF 20 2C 85 18 00 00 03
20: 41 FA FB 10 00 10 34 B2 83 00 00 00 00 00 00 03
30: FF 02 00 00 12 11 3E 31 05 FF 00 40 B9 00 3E 31
40: 00 00 00 00 00 00 00 00 00 54 00 00 00 66 66 00
50: 13 31 04 00 00 00 00 00 00 00 00 00 00 00 00 00
I2C Devices: 1:8A
Device 1:8A = Brooktree BT869 Rev 3 (1:8A)