IVTV and permission denied on /dev/v4l/video0

[badgers]

why would the PVR-350 that I have not be able to be accessed?

[badgers]

[badgers]

funny thing is that this seems to work right

[badgers]

why is the group
video 81

and not just video?

I guess I thought root could get at anything
_________________
Abit KD7-S
Athlon XP2500+
166mHz FSB
512 Meg PC3200 Ram running at 166mHz
LiteOn DVD dual Layer burner(hdc)

2.6.17 Suspend2 kernel with no scsi support

[Coelacanth]

Are you sure you want to execute it?
Have you tried:
# cat /dev/v4l/video0 > test.mpg

[badgers]

DUDE you are a genius and I am a tool...


thanks

it was so awsome that you caught that.
_________________
Abit KD7-S
Athlon XP2500+
166mHz FSB
512 Meg PC3200 Ram running at 166mHz
LiteOn DVD dual Layer burner(hdc)

2.6.17 Suspend2 kernel with no scsi support

[eztrigger]

I think I may be having a similar problem. I can get the file to be created with the cat command after tuning the card but the result appears to be an empty file. Any suggestions?

[/carlito]

[eztrigger]

I did not have ivtv or v4l flags, so I added those and did emerge --newuse world and I get the same results. Any other ideas?

[/carlito]

Please post the output of

[eztrigger]

[jimhend~1]

it looks like some modules arent loading.

this is my output.

dmesg |grep -i ivtv
ivtv: Start initialization, version 1.0.0
ivtv0: Initializing card #0
ivtv0: Autodetected Hauppauge card (cx23415 based)
ivtv0: Unreasonably low latency timer, setting to 64 (was 32)
ivtv0: Loaded v4l-cx2341x-enc.fw firmware (376836 bytes)
ivtv0: Loaded v4l-cx2341x-dec.fw firmware (262144 bytes)
ivtv0: Encoder revision: 0x02060039
ivtv0: Decoder revision: 0x02020023
ivtv0: Autodetected Hauppauge WinTV PVR-350
tuner 2-0043: chip found @ 0x86 (ivtv i2c driver #0)
tuner 2-0061: chip found @ 0xc2 (ivtv i2c driver #0)
saa7115 2-0021: saa7115 found (1f7115d0e100000) @ 0x42 (ivtv i2c driver #0)
saa7127 2-0044: saa7129 found @ 0x88 (ivtv i2c driver #0)
msp3400 2-0040: MSP4418G-B3 found @ 0x80 (ivtv i2c driver #0)
ivtv0: Registered device video0 for encoder MPEG (4 MB)
ivtv0: Registered device video32 for encoder YUV (2 MB)
ivtv0: Registered device vbi0 for encoder VBI (1 MB)
ivtv0: Registered device video24 for encoder PCM audio (1 MB)
ivtv0: Registered device radio0 for encoder radio
ivtv0: Registered device video16 for decoder MPEG (1 MB)
ivtv0: Registered device vbi8 for decoder VBI (1 MB)
ivtv0: Registered device vbi16 for decoder VOUT
ivtv0: Registered device video48 for decoder YUV (1 MB)
ivtv0: Loaded v4l-cx2341x-init.mpg firmware (155648 bytes)
ivtv0: Initialized card #0: Hauppauge WinTV PVR-350
ivtv: End initialization

these days i just settle for the in kernel ivtv.


zcat /proc/config.gz | grep -i video
CONFIG_VIDEO_DEV=m
CONFIG_VIDEO_V4L1=y
CONFIG_VIDEO_V4L1_COMPAT=y
CONFIG_VIDEO_V4L2=y
CONFIG_VIDEO_CAPTURE_DRIVERS=y
# CONFIG_VIDEO_ADV_DEBUG is not set
# CONFIG_VIDEO_HELPER_CHIPS_AUTO is not set
CONFIG_VIDEO_TVAUDIO=m
# CONFIG_VIDEO_TDA7432 is not set
# CONFIG_VIDEO_TDA9840 is not set
# CONFIG_VIDEO_TDA9875 is not set
# CONFIG_VIDEO_TEA6415C is not set
# CONFIG_VIDEO_TEA6420 is not set
CONFIG_VIDEO_MSP3400=m
CONFIG_VIDEO_CS53L32A=m
# CONFIG_VIDEO_TLV320AIC23B is not set
CONFIG_VIDEO_WM8775=m
CONFIG_VIDEO_WM8739=m
# Video decoders
# CONFIG_VIDEO_BT819 is not set
# CONFIG_VIDEO_BT856 is not set
# CONFIG_VIDEO_BT866 is not set
# CONFIG_VIDEO_KS0127 is not set
# CONFIG_VIDEO_OV7670 is not set
# CONFIG_VIDEO_SAA7110 is not set
# CONFIG_VIDEO_SAA7111 is not set
# CONFIG_VIDEO_SAA7114 is not set
CONFIG_VIDEO_SAA711X=m
# CONFIG_VIDEO_SAA7191 is not set
# CONFIG_VIDEO_TVP5150 is not set
# CONFIG_VIDEO_VPX3220 is not set
# Video and audio decoders
CONFIG_VIDEO_CX25840=m
# MPEG video encoders
CONFIG_VIDEO_CX2341X=m
# Video encoders
CONFIG_VIDEO_SAA7127=m
# CONFIG_VIDEO_SAA7185 is not set
# CONFIG_VIDEO_ADV7170 is not set
# CONFIG_VIDEO_ADV7175 is not set
# Video improvement chips
CONFIG_VIDEO_UPD64031A=m
CONFIG_VIDEO_UPD64083=m
# CONFIG_VIDEO_VIVI is not set
# CONFIG_VIDEO_BT848 is not set
# CONFIG_VIDEO_CPIA is not set
# CONFIG_VIDEO_CPIA2 is not set
# CONFIG_VIDEO_SAA5246A is not set
# CONFIG_VIDEO_SAA5249 is not set
# CONFIG_VIDEO_STRADIS is not set
# CONFIG_VIDEO_ZORAN is not set
# CONFIG_VIDEO_SAA7134 is not set
# CONFIG_VIDEO_MXB is not set
# CONFIG_VIDEO_DPC is not set
# CONFIG_VIDEO_HEXIUM_ORION is not set
# CONFIG_VIDEO_HEXIUM_GEMINI is not set
# CONFIG_VIDEO_CX88 is not set
CONFIG_VIDEO_IVTV=m
# CONFIG_VIDEO_CAFE_CCIC is not set
CONFIG_VIDEO_TUNER=m
CONFIG_VIDEO_TVEEPROM=m
# CONFIG_VIDEO_OUTPUT_CONTROL is not set
# CONFIG_VIDEO_SELECT is not set

[eztrigger]

that sounds right, but what do I need to get the tuner module loaded?

[absoluteflatness]

Well, the selection process should have made you build all the necessary modules if you were building the ivtv module.

Does your output from "zcat /proc/config.gz | grep -i video " match the one shown above?

What happens when you do:
# modprobe tuner

[eztrigger]

I have the following where jimhend~1 does not have anything mentioned:

[absoluteflatness]

Well, on it's startup, the ivtv module tried to load tveeprom, tuner, cx25840, and wm8775, but failed to for some reason. I'm not sure why it would fail on startup but work correctly when manually inserted though. Anyway, in addition to the module loading failure messages, your log shows the driver failing to send commands to the components that those modules control. The pratical upshot is that to work correctly the ivtv driver needs to have the tveeprom, tuner, cx25840, and wm8775 modules inserted into the kernel.

Anyway, on to important matters:

You could try this: remove the ivtv module: "modprobe -r ivtv"
Then, insert each of the above mentioned modules: "modprobe tveeprom", "modprobe tuner", and so on.

Finally, re-insert the ivtv module. Try to run "mplayer /dev/video0" again and see what happens.

If it works, or doesn't, please post the section of your dmesg input between the "START INIT IVTV" and "END INIT IVTV" lines. Posting just the lines that contain "ivtv", which is what you posted before, leaves out some of the output. You can do this by running the following command:

[eztrigger]

Awesome. Both TV and radio now seem to work with mplayer. Now how to get those missing modules to load automatically:

[tmba]

I'm also having the same issue, ivtv does not load module tuner. Manually removing the modules and re-loading them does not seem to help for me though. Here is my messages log:

#############################################################
# dmesg | sed -n '/= START INIT IVTV/,/= *END INIT IVTV/p'
#############################################################

ivtv: ==================== START INIT IVTV ====================
ivtv: version 1.0.0 (2.6.22-gentoo-r8 SMP mod_unload PENTIUMIII ) loading
ivtv0: Autodetected Hauppauge card (cx23415 based)
ACPI: PCI Interrupt 0000:00:05.0[A] -> Link [LNKB] -> GSI 11 (level, low) -> IRQ 11
ivtv0: loaded v4l-cx2341x-enc.fw firmware (376836 bytes)
ivtv0: loaded v4l-cx2341x-dec.fw firmware (262144 bytes)
ivtv0: Encoder revision: 0x02060039
ivtv0: Decoder revision: 0x02020023
input: i2c IR (Hauppauge) as /class/input/input7
ir-kbd-i2c: i2c IR (Hauppauge) detected at i2c-0/0-0018/ir0 [ivtv i2c driver #0]
saa7115 0-0021: saa7115 found (1f7115d0e100000) @ 0x42 (ivtv i2c driver #0)
msp3400 0-0040: MSP4418G-B3 found @ 0x80 (ivtv i2c driver #0)
msp3400 0-0040: MSP4418G-B3 supports nicam and radio, mode is autodetect and autoselect
saa7127 0-0044: saa7129 found @ 0x88 (ivtv i2c driver #0)
tuner 0-0043: chip found @ 0x86 (ivtv i2c driver #0)
tda9887 0-0043: tda988[5/6/7] found @ 0x43 (tuner)
tuner 0-0061: chip found @ 0xc2 (ivtv i2c driver #0)
ivtv0: Failed to load module tveeprom
tveeprom 0-0050: Hauppauge model 48139, rev K2B7, serial# 9927831
tveeprom 0-0050: tuner model is Philips FM1216ME MK5 (idx 117, type 3
tveeprom 0-0050: TV standards PAL(B/G) PAL(I) SECAM(L/L') PAL(D/D1/K) (eeprom 0x74)
tveeprom 0-0050: audio processor is MSP4418 (idx 25)
tveeprom 0-0050: decoder processor is SAA7115 (idx 19)
tveeprom 0-0050: has radio, has IR receiver, has no IR transmitter
ivtv0: Autodetected Hauppauge WinTV PVR-350
ivtv0: Failed to load module tuner
ivtv0: Failed to load module saa7115
ivtv0: Failed to load module saa7127
ivtv0: Failed to load module msp3400
tuner 0-0061: type set to 38 (Philips PAL/SECAM multi (FM1216ME MK3))
ivtv0: Registered device video0 for encoder MPEG (4 MB)
ivtv0: Registered device video32 for encoder YUV (2 MB)
ivtv0: Registered device vbi0 for encoder VBI (1 MB)
ivtv0: Registered device video24 for encoder PCM audio (1 MB)
ivtv0: Registered device radio0 for encoder radio
ivtv0: Registered device video16 for decoder MPEG (1 MB)
ivtv0: Registered device vbi8 for decoder VBI (1 MB)
ivtv0: Registered device vbi16 for decoder VOUT
ivtv0: Registered device video48 for decoder YUV (1 MB)
ivtv0: loaded v4l-cx2341x-init.mpg firmware (155648 bytes)
ivtv0: Initialized Hauppauge WinTV PVR-350, card #0
ivtv: ==================== END INIT IVTV ====================


#############################################################
Output from my loaded modules (wonder why it can not load tuner when tuner shows up in lsmod
#############################################################

# lsmod | grep 'tuner\|i2c\|bttv\|ivtv'
ivtv 117392 0
cx2341x 14340 1 ivtv
tuner 59816 0
bttv 159988 0
video_buf 22404 1 bttv
compat_ioctl32 5248 1 bttv
i2c_algo_bit 9092 2 ivtv,bttv
btcx_risc 7816 1 bttv
videodev 28160 2 ivtv,bttv
v4l1_compat 15876 3 ivtv,bttv,videodev
tveeprom 17680 2 ivtv,bttv
ir_kbd_i2c 10636 0
ir_common 33540 2 bttv,ir_kbd_i2c
i2c_dev 9348 0
i2c_isa 7168 1 sis5595
i2c_core 22272 20 ivtv,tuner,bttv,i2c_algo_bit,tveeprom,upd64031a,cx25840,wm8739,tvaudio,upd64083,cs53l32a,wm8775,saa7127,msp3400,saa7115,ir_kbd_i2c,i2c_dev,sis5595,i2c_isa,saa717x
v4l2_common 18688 16 ivtv,cx2341x,tuner,bttv,videodev,upd64031a,cx25840,wm8739,tvaudio,upd64083,cs53l32a,wm8775,saa7127,msp3400,saa7115,saa717x

[absoluteflatness]

For comparison, this is what my ivtv loading looks like:

[tmba]

Boy do I feel like what the heading under my nick says. I went through once more to double check which kernel options are enabled, and in the end I found that CONFIG_KMOD was missing.

You see, I read 'The following kernel options are sensed (and required):' from the ivtv documentation for gentoo at http://ivtvdriver.org/index.php/Howto:Gentoo and therefore assumed that ivtv would not install without them. Needless to say, its not the case.

Thanks for the advice though

[absoluteflatness]

Unfortunately for you, that documentation is out of date. I'm looking at the ebuilds right now, and the older ivtv ebuilds (from before the driver was integrated into the kernel sources) do indeed check for CONFIG_KMOD. However, the new ones (1.x) don't, I presume because you could theoretically compile ivtv into your kernel, and thus not need automatic module loading. (Edit: I've put in some skeleton documentation covering installation with newer kernels (>=2.6.22) on the ivtvdriver.org Gentoo page)

If you're still reading this thread, eztrigger, this is probably also your problem. The kernel option in question is "Automatic kernel module loading", which I believe falls under "Loadable module support".

[beandog]