devfs and v4l problem

gastar · n00b Joined: 10 Dec 2002 Posts: 38

Hi,

yesterday i installed a new Kernel (2.4.20 vanilla) Since than i can't use xawtv.

Ok hier is some output:

xawtv
This is xawtv-3.80, running on Linux/i686 (2.4.20)
xinerama 0: 1024x768+1280+0
xinerama 1: 1280x1024+0+0
can't open /dev/v4l/video0: No such file or directory
v4l-conf had some trouble, trying to continue anyway
v4l2: open /dev/v4l/video0: No such file or directory
v4l2: open /dev/v4l/video0: No such file or directory
v4l: open /dev/v4l/video0: No such file or directory
no video grabber device available

humm looking to /dev/v4l there is no device in there.

devfs is installed and started ... ?

cat /proc/filesystems
nodev rootfs
nodev bdev
nodev proc
nodev sockfs
nodev tmpfs
nodev shm
nodev pipefs
ext2
nodev ramfs
iso9660
nodev devfs
nodev nfs
nodev autofs
reiserfs
nodev devpts
nodev usbdevfs
nodev usbfs

and this in in the /etc/devfsd.conf

REGISTER v4l/.* PERMISSIONS root.video 660
REGISTER ^v4l/video0$ CFUNCTION GLOBAL mksymlink v4l/video0 video
UNREGISTER ^v4l/video0$ CFUNCTION GLOBAL unlink video

the directory /dev/v4l is created on boot.

and dmesg looks like the card was detected correct.

Linux video capture interface: v1.00
i2c-core.o: i2c core module
i2c-algo-bit.o: i2c bit algorithm module
bttv: driver version 0.7.96 loaded
bttv: using 4 buffers with 2080k (8320k total) for capture
bttv: Host bridge is Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX Host bridge
bttv: Host bridge needs ETBF enabled.
bttv: Bt8xx card found (0).
bttv0: Bt848 (rev 1

at 00:0c.0, irq: 16, latency: 64, mmio: 0xe3001000
bttv0: using: BT848A(Terratec TerraTV+) [card=28,insmod option]
bttv0: enabling ETBF (430FX/VP3 compatibilty)
i2c-core.o: adapter bt848 #0 registered as adapter 0.
bttv0: using tuner=5
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,tda9874h/a,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: probing bt848 #0 i2c adapter [id=0x10005]
tuner: chip found @ 0xc0
bttv0: i2c attach [client=Philips PAL_BG (FI1216 and compa,ok]
i2c-core.o: client [Philips PAL_BG (FI1216 and compa] registered to adapter [bt848 #0](pos. 0).
bttv0: registered device video0
bttv0: registered device vbi0

has someone an idea what could be wrong ?

happy x-mas
Philipp D.

Tuxisuau · Posted: Wed Dec 25, 2002 1:57 pm Post subject:

killall -HUP devfsd

And then try xawtv again.

It works for me, but it's obvious that there's a problem in the first place.
_________________
IM me at tuxisuau@jabber.7a69ezine.org

gastar · n00b Joined: 10 Dec 2002 Posts: 38

Hi,

thanx for the reply but that does not help.

vibidoo · Guru Joined: 27 Nov 2002 Posts: 409

wich bttv version do you use ??

I have a 2.4.20 -win4lin-r1 kernel
and I use bttv 0.9.3 and xawtv 3.81

gastar · n00b Joined: 10 Dec 2002 Posts: 38

bttv: driver version 0.7.96 loaded

and as said above Kernel version is a vanilla 2.4.20

JanErik · Guru Joined: 28 Oct 2002 Posts: 488 Location: Finland

I guess we have the same problem :cry:

https://forums.gentoo.org/viewtopic.php?t=33352

I think something is mixed up with v4l2 and the old v4l.

Cid Highwind · n00b Joined: 09 Jul 2002 Posts: 53

I'm having the same problem with my IBM/Xirlink USB camera.

JanErik · Guru Joined: 28 Oct 2002 Posts: 488 Location: Finland

What does v4l-conf give as output?

Cid Highwind · n00b Joined: 09 Jul 2002 Posts: 53

JanErik · Guru Joined: 28 Oct 2002 Posts: 488 Location: Finland

I think v4l-conf is installed with xawtv...

Cid Highwind · n00b Joined: 09 Jul 2002 Posts: 53

Ok, so v4l-conf doesn't tell me anything new...

art · n00b Joined: 22 Jun 2002 Posts: 47 Location: Ma

I have the same problem, running vanilla 2.4.20 w/nf7 mb geforce 4 ti 4200
thought it was my mb guess not!!
Hope someone finds a cure!!

Twink · Posted: Sat Feb 15, 2003 1:13 am Post subject:

hav eyou applied the kernel patches at www.bytesex.org ?

JanErik · Guru Joined: 28 Oct 2002 Posts: 488 Location: Finland

I tried applying the v4l2 patches, didn´t compile.
I think something is mixed up in these newer kernels, I´m currently rebuilding my entire Gentoo, and this time I will install gentoo-sources-2.4.19-r8, because this kernel worked with my card.

Cid Highwind · n00b Joined: 09 Jul 2002 Posts: 53

Ok, my problem is not bug, I'm just retarded.
I didn't have the camera plugged in. It works fine now that it is connected to the computer.

DUH!
*slaps forehead*