I've just updated my system from Red Hat Linux 6.2 to 7.2 (+ updates).
xawtv now shows only black. It worked under 6.2.
Sound works -- I can hear the TV stations, but only see black.
On the console (i.e. not an X window), I get a lot of
ioctl VIDIOCCAPTURE(0): Invalid argument
ioctl VIDIOCCAPTURE(1): Invalid argument
They don't show up in dmesg.
Can anyone suggest how I can get a picture in my xawtv window? Bonus
marks for pointing me in the direction of a program to play my radio.
- tuner card: Aimslab Video Highway Xtreme. This card uses bt848.
The manufacturer disappeared a while ago.
It includes a Philips TEA5757H AM/FM "Self-Tuned Radio" chip
(apparently called "matchbox" in the bttv code). I've not tried the
radio.
It also has a Philips TDA7050 "low voltage mono/stereo power amp".
- computer: ABIT BP6 dual processor. Two celeron 300a CPUs running at
450MHz (overclocked, yes, but stable for two years).
- video card: ATI Rage 128.
- Software versions (standard with RHL7.2):
+ bttv 0.7.72
+ Kernel 2.4.9-13smp (not a Linus kernel)
+ xawtv-3.54
+ XFree86 4.1.0 (3.3.6 on RHL6.2; server from SuSE)
- interesting lines from /etc/modules.conf
6.2:
alias char-major-81 bttv
# VHX: bttv.h:BTTV_VHX == 0x0e
options bttv card=0x0e radio=1
# VHX has Philips NTSC, I think: tuner.h:TUNER_PHILIPS_NTSC == 2
options tuner type=2
below bttv tuner
7.2 (also tried 6.2 version -- not really different, but this
matches the documentation and adds to the debugging output):
# i2c
alias char-major-89 i2c-dev
options i2c-core i2c_debug=1
options i2c-algo-bit bit_test=1
# bttv
alias char-major-81 videodev
alias char-major-81-0 bttv
# VHX: bttv.h:BTTV_VHX == 0x0e
options bttv card=0x0e radio=1 bttv_verbose=2
# VHX has Philips NTSC: tuner.h:TUNER_PHILIPS_NTSC == 2
options tuner debug=1 type=2
options tvaudio debug=1
- interesting lines from dmesg / /var/log/messages.
Linux video capture interface: v1.00
i2c-core.o: i2c core module
i2c-algo-bit.o: i2c bit algorithm module
bttv: driver version 0.7.72 loaded
bttv: using 2 buffers with 2080k (4160k total) for capture
bttv: Host bridge needs ETBF enabled.
bttv: Bt8xx card found (0).
bttv0: Bt848 (rev 18) at 00:0f.0, irq: 16, latency: 32, memory: 0xdb002000
bttv0: model: BT848A(Aimslab VHX) [insmod option]
bttv0: enabling ETBF (430FX/VP3 compatibilty)
i2c-algo-bit.o: Adapter: bt848 #0 scl: 1 sda: 1 -- testing...
i2c-algo-bit.o:1 scl: 1 sda: 0
i2c-algo-bit.o:2 scl: 1 sda: 1
i2c-algo-bit.o:3 scl: 0 sda: 1
i2c-algo-bit.o:4 scl: 1 sda: 1
i2c-algo-bit.o: bt848 #0 passed test.
i2c-core.o: adapter bt848 #0 registered as adapter 0.
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,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 @ 0xc0
bttv0: i2c attach [Philips NTSC]
i2c-core.o: client [Philips NTSC] registered to adapter [bt848 #0](pos. 0).
tuner: tv freq set to 67.25
- the messages under RHL6.2 are way more sparse, but the picture worked:
i2c: initialized
Linux video capture interface: v1.00
bttv0: Brooktree Bt848 (rev 18) bus: 0, devfn: 120, irq: 16, memory: 0xdb002000.
bttv: 1 Bt8xx card(s) found.
bttv0: NO fader chip: TEA6300
bttv0: model: BT848(Aimslab-VHX)
- my ~/.xawtv file was unchanged from 6.2. Just to be safe, I then
hid it and generated a new one with scantv. Same results. Since
sound works, the channel information must be correct. Here is the
rest, as set by scantv (because it is short):
[global]
freqtab = us-cable
[defaults]
input = Television
norm = NTSC
Here's the config from 6.2 (with a slight change to "source"):
[global]
freqtab = us-cable
pixsize = 128 x 96
pixcols = 1
jpeg-quality = 75
mjpeg-quality = 75
keypad-ntsc = no
osd = yes
# [Station name]
# capture = overlay | grabdisplay | on | off
# input = Television | Composite1 | S-Video | ...
# norm = PAL | NTSC | SECAM | ...
# channel = #
# fine = # (-128..+127)
# key = keysym | modifier+keysym
# color = #
# bright = #
# hue = #
# contrast = #
[defaults]
norm = NTSC
capture = over
source = television
- /usr/X11/XF86Config-4 includes "Load "v4l" in Section "Module".
- I've tried "xawtv -r" (after "xawtv"). No luck.
- Most testing was done as an ordinary user. I did try running xawtv
as root, but nothing improved.
- the bttv changelog for 0.7.55 has this scary mention of the VHX:
* changed gpio pins for the tea5757 radio tuner from compile time
to runtime. The "Aimslab VHX" uses the same chip but other gpio
lines [VHX not working yet, needs more debugging].
But since sound works well enough at the moment, this cannot be my
problem.
Thanks!
Hugh Redelmeier
hugh@xxxxxxxxxx voice: +1 416 482-8253
