So, I've been trying to get my tv tuner card working again on opensuse 10.3. I've had it working on previous versions and I think I even got it to work on 10.3 at some point, but it certainly isnt working now.

v4l-conf and v4l-info say "no such device" about /dev/fb0 and /dev/video0 respectively.

Some data:

---------
ls -la /dev/video0 /dev/fb0
crw-r--r-- 1 root root 29, 0 2008-11-26 21:00 /dev/fb0
crw-rw-rw- 1 root root 81, 0 2008-11-14 18:12 /dev/video0
---------

---------
The error that I get when I try to run xawtv:

This is xawtv-3.95, running on Linux/x86_64 (2.6.22.18-0.2-default)
xinerama 0: 800x600+0+0
can't open /dev/video0: No such device
v4l-conf had some trouble, trying to continue anyway
v4l2: open /dev/video0: No such device
v4l2: open /dev/video0: No such device
v4l: open /dev/video0: No such device
no video grabber device available
-----------

grep bttv /var/log/messages

Nov 14 17:45:41 sitting kernel: bttv: driver version 0.9.17 loaded
Nov 14 17:45:41 sitting kernel: bttv: using 8 buffers with 2080k (520 pages) each for capture
Nov 14 17:57:41 sitting kernel: bttv: driver version 0.9.17 loaded
Nov 14 17:57:41 sitting kernel: bttv: using 8 buffers with 2080k (520 pages) each for capture
Nov 14 17:58:45 sitting kernel: bttv: driver version 0.9.17 loaded
Nov 14 17:58:45 sitting kernel: bttv: using 8 buffers with 2080k (520 pages) each for capture

--------------

lspci -vv

[snip]
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon RV200 QW [Radeon 7500] (prog-if 00 [VGA])
Subsystem: PC Partner Limited Radeon RV200 QW [Radeon 7500 LE]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping+ SERR- FastB2B-
Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 32 (2000ns min), Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 16
Region 0: Memory at e8000000 (32-bit, prefetchable) [size=128M]
Region 1: I/O ports at 8000 [size=256]
Region 2: Memory at f1000000 (32-bit, non-prefetchable) [size=64K]
[virtual] Expansion ROM at f0000000 [disabled] [size=128K]
Capabilities: [58] AGP version 2.0
Status: RQ=48 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans- 64bit- FW- AGP3- Rate=x1,x2,x4
Command: RQ=32 ArqSz=0 Cal=0 SBA+ AGP+ GART64- 64bit- FW- Rate=x4
Capabilities: [50] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

02:06.0 Multimedia video controller: Brooktree Corporation Unknown device 0366 (rev 02)
Subsystem: 3Dfx Interactive, Inc. Unknown device 3060
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR+
Latency: 32 (4000ns min, 10000ns max)
Interrupt: pin A routed to IRQ 11
Region 0: Memory at f4000000 (32-bit, prefetchable) [size=4K]

02:06.1 Multimedia controller: Brooktree Corporation Unknown device 0870 (rev 02)
Subsystem: 3Dfx Interactive, Inc. Unknown device 3060
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR+
Latency: 32 (1000ns min, 63750ns max)
Interrupt: pin A routed to IRQ 11
Region 0: Memory at f4001000 (32-bit, prefetchable) [size=4K]
[/snip]
--------------

Does anyone know what I need to do to get this tv tuner card working?

load the kernel module for the device?

$ lsmod

$ lspci -n

# modprobe bttv

And/or configure udev to create /dev/video0

$ egrep -r -i "v4l\/" /etc/udev/*

If you don't have some sort of KERNEL=="video[0-9]*", NAME="v4l/%k" type entry, it's not there and probably needs to be added. If it's there, then you probably didn't load the kernel driver.

$ dmesg

I've tried using modprobe to load the module.

If I use "mknod /dev/video0 c 81 0" to create the device, the error message that I get is

can't open /dev/video0: No such device
v4l-conf had some trouble, trying to continue anyway
v4l2: open /dev/video0: No such device
v4l2: open /dev/video0: No such device
v4l: open /dev/video0: No such device
no video grabber device available

When I modprobe, dmesg generates the following lines:

Linux video capture interface: v2.00
bttv: driver version 0.9.17 loaded
bttv: using 8 buffers with 2080k (520 pages) each for capture
agpgart: Found an AGP 2.0 compliant device at 0000:00:00.0.
agpgart: Putting AGP V2 device at 0000:00:00.0 into 4x mode
agpgart: Putting AGP V2 device at 0000:01:00.0 into 4x mode

So, the module is inserted and the device file exists, but it seems as if the device file is not linked to the physical device. I'm trying to figure out why that is and how to fix it.

Are you sure you got the major/minor numbers right?

/proc/devices should have the major numbers associated with a given device.

81 video4linux

/proc/misc for the minor numbers of devices with a major of 10.

It could be other things as well. Did you compile v4l / v4l2 support in the kernel? Are they modules?

# modprobe v4l1-compat
# modprobe v4l2-common

I think v4l1-compat is responsible for /dev/video0's existence. It could also be permissions.

chgrp video /dev/video0

or

chown root:video /dev/video0

Don't forget to put your user in the video group, if they aren't already.

HTH

Theres nothing listed under /proc/devices for video4linux. I think this is part of the problem. The drivers are loading but not attaching to anything.