Diff for "Install_IVTV_Troubleshooting"

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⇤ ← Revision 12 as of 2007-01-02 22:23:38 →
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Editor: adsl-75-0-148-146
Comment: add firmware loading bit
← Revision 19 as of 2008-06-27 10:15:00 → ⇥
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Editor: localhost
Comment: converted to 1.6 markup
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=== Poor Audio Quality on a PVR-500 ===
If you are encountering distorted audio, this is a known issue with certain versions of the ivtv driver (and is apparent in the windows driver too). Follow the directions below on this page to upgrade to a newer version. Thanks to jlr4u for verifying that this solved the problem.
If you encounter issues still, post in this thread: http://ubuntuforums.org/showthread.php?t=345655
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=== ivtv-firmware has no installation candidate ===
If when trying to install the firmware, you encounter an error similar to:
 {{{
supermario@portablemario:~$ sudo apt-get install ivtv-firmware
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package ivtv-firmware is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package ivtv-firmware has no installation candidate
}}}
This likely means you had a typo when adding the firmware repository to your {{{/etc/apt/sources.list}}}

Recheck {{{/etc/apt/sources.list}}} and make sure that you properly added the repository that you are getting your firmware from.

=== unable to open firmware ==
If you have properly installed the ivtv-firmware package, you will have the firmware in /lib/firmware
 {{{
$ ls /lib/firmware/v4l*fw -l
-rw-r--r-- 1 root root 262144 2006-12-18 14:58 /lib/firmware/v4l-cx2341x-dec.fw
-rw-r--r-- 1 root root 262144 2006-12-18 14:58 /lib/firmware/v4l-cx2341x-enc.fw
-rw-r--r-- 1 root root 16382 2006-12-18 14:58 /lib/firmware/v4l-cx25840.fw
}}}

If you are still encountering errors in dmesg similar to this:
 {{{
[17179588.876000] ivtv0: unable to open firmware v4l-cx2341x-enc.fw
[17179588.876000] ivtv0: did you put the firmware in the hotplug firmware directory?
[17179588.876000] ivtv0 warning: failed loading encoder firmware
[17179588.876000] ivtv0 warning: Error loading firmware -3!
[17179588.876000] ivtv0: Error -3 initializing firmware.
[17179588.876000] ivtv0: Error -12 on initialization
[17179588.876000] ivtv: probe of 0000:02:08.0 failed with error -12
}}}

You should try cold-booting the machine. This involves shutting the machine down, and '''REMOVING''' power from the machine. This forces the firmware to be cleared from the memory on the Hauppauge card. A warm boot won't necessarily do this.
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First make a copy of your old grub configuration. You should do this everytime you make an edit of grub.
{{{
cp /boot/grub/menu.list /boot/grub/menu.list.backup
}}}
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=== Further Troubleshooting ===
The IVTV Wiki includes lots of non-ubuntu specific information about IVTV Troubleshooting:
http://ivtvdriver.org/index.php/Troubleshooting
<<Include(Install_IVTV_Troubleshooting/PreFeisty)>>

Troubleshooting

Check IVTV is initialized

Run: 

  • dmesg |grep Initialized

You should see something like: 

  • ivtv: Initialized WinTV PVR 250, card #0
ivtv: Initialized WinTV PVR 350, card #1

This example shows two cards. If you only have one, you will see results similar to this: 

  • ivtv: Initialized WinTV PVR 250, card #0

This is a good way to identify if the card even initially loaded.

Testing Capture

  • After the driver is loaded, you can test it by doing a simple capture 
    • cat /dev/video0 > /tmp/test_capture.mpg

    Let this go for about 5 sec and then press <ctrl> + 'c'

  • Attempt to play this back using your favorite media player. (mplayer for the example) 
    • mplayer /tmp/test_capture.mpg
  • See if you have some recorded content coming up in the test capture.

Poor Audio Quality on a PVR-500

If you are encountering distorted audio, this is a known issue with certain versions of the ivtv driver (and is apparent in the windows driver too). Follow the directions below on this page to upgrade to a newer version. Thanks to jlr4u for verifying that this solved the problem. If you encounter issues still, post in this thread: http://ubuntuforums.org/showthread.php?t=345655

Diagnosing Problems

  • Check dmesg to see if there are any errors loading firmware or anything like that. 
    dmesg | tac | sed -n '/=\ \ END INIT IVTV\ \ =/,/= START INIT IVTV =/p;/= START INIT IVTV =/q' | tac

If you see any errors that are not covered below, go into #ubuntu and see if you can grab some help or post on the forums.

Errors during modprobe

If you encounter errors similar to: 

  • sudo modprobe ivtv
FATAL: Error inserting ivtv (/lib/modules/2.6.17-10-generic/ivtv/ivtv.ko): Unknown symbol in module, or unknown parameter (see dmesg)

and check dmesg to see similar things to this: 

  • [17182375.312000] ivtv: disagrees about version of symbol video_unregister_device
[17182375.312000] ivtv: Unknown symbol video_unregister_device
[17182375.312000] ivtv: disagrees about version of symbol video_device_alloc
[17182375.312000] ivtv: Unknown symbol video_device_alloc
[17182375.312000] ivtv: disagrees about version of symbol video_register_device
[17182375.312000] ivtv: Unknown symbol video_register_device
[17182375.312000] ivtv: disagrees about version of symbol video_device_release
[17182375.312000] ivtv: Unknown symbol video_device_release
[17182762.044000] ivtv: disagrees about version of symbol video_unregister_device
[17182762.044000] ivtv: Unknown symbol video_unregister_device
[17182762.044000] ivtv: disagrees about version of symbol video_device_alloc
[17182762.044000] ivtv: Unknown symbol video_device_alloc
[17182762.044000] ivtv: disagrees about version of symbol video_register_device
[17182762.044000] ivtv: Unknown symbol video_register_device
[17182762.044000] ivtv: disagrees about version of symbol video_device_release
[17182762.044000] ivtv: Unknown symbol video_device_release

you will need to reinstall the running linux image. This can be caused by overwriting the modules necessary for ivtv to work.

Reinstall the linux image: 

  • sudo apt-get install --reinstall linux-image-`uname -r`
sudo depmod -a

Follow the steps to rebuild the modules.

Resource allocation errors

There are two possible solutions to resource allocation problems:

  • Be sure that you have enabled APIC on your machine's BIOS. This will guarantee enough resources are allocated for the device.

    See http://ubuntuforums.org/showthread.php?t=284041 for more information.

  • Add  vmalloc=192m  to your kernel boot parameters.

First make a copy of your old grub configuration. You should do this everytime you make an edit of grub. 

cp /boot/grub/menu.list /boot/grub/menu.list.backup

  • Edit /boot/grub/menu.lst to add the vmalloc=192 to the end of your kernel line: 

    • title           Ubuntu, kernel 2.6.17-10-server
root            (hd0,0)
kernel          /boot/vmlinuz-2.6.17-10-server root=/dev/hda1 ro quiet splash vmalloc=192m
initrd          /boot/initrd.img-2.6.17-10-server
quiet
savedefault
boot

Install_IVTV_Troubleshooting (last edited 2008-06-27 10:15:00 by localhost)