[mythtv-users] insmod ivtv.o problem - bus mastering not enabled

John P. Mitchell john at cepros.com
Sun Sep 12 20:33:58 EDT 2004


   I have run into two things that might help you out. Look for options in
the the BIOS that refer to Bus Master(s|ing) and turn them on. Make
notes on your changes to the BIOS in the event that a setting does
nothing or makes things worse. Helps with the diagnosis, resolution,
and not introducing other issues. Also, some motherboards seem to have
trouble with certain cards in certain PCI slots. You might try
shuffling the cards in your machine around and see if that helps as
well. Again make notes if you have more than a single card in the
machine. I have an Athlon board that will only behave correctly with
the ethernet card in a certain slot and the sound card in a certain
slot, any other slot/card combination and I get strange results. This
seems to be becoming less of an issue now days though.

> While loading the ivtv drivers for my new Hauppauge pvr-350, I get an
> error on insmod ivtv.o
> modprobe i2c-core - works fine
> modprobe i2c-algo-bit  - works fine
> modprobe tuner type=2  - works fine
> modprobe msp3400  - works fine
> modprobe videodev  - works fine
> insmod saa7115.o  - works fine
> insmod ivtv.o  - fails with:
> ivtv.o: init_module: No such device
> ivtv.o: Hint: insmod errors can be caused by incorrect module
> parameters, including invalid
> IO or IRQ parameters.  You may find more information in syslog or the
> output from dmesg
> But, lspci -v finds the hardware:
> 00:09.0 Multimedia video controller: Internext Compression Inc iTVC15
> MPEG-2 Enc
> oder (rev 01)
>         Subsystem: Hauppauge computer works Inc. WinTV PVR-350
>         Flags: medium devsel, IRQ 5
>         Memory at 18000000 (32-bit, prefetchable) [size=64M]
>         Capabilities: [44] Power Management version 2
> and dmesg shows an error:
> PCI: Found IRQ 5 for device 00:09.0
> ivtv: Bus Mastering is not enabled
> ivtv: Error -6 on init
> ivtv: Error detecting PCI card
> ivtv: version 0.1.9 (release) loading
> ivtv: SGarray_size = 340, DSGarray_size = 16
> ivtv: Found an iTVC15 based chip
> PCI: Found IRQ 5 for device 00:09.0
> ivtv: Bus Mastering is not enabled
> ivtv: Error -6 on init
> ivtv: Error detecting PCI card
> - ivtv: Bus Mastering is not enabled  -- appears to be the problem
> Anyone know how to enable bus-mastering?  Is this a motherboard thing,
> or do I need to change some parameters on ivtv (where do I change
> parameters)?  It's already installed in the pci slot next to the agp
> port (tried other ports, but made no difference).  Any ideas on where to
> look?  Thanks
> Don
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    John P. Mitchell <john at cepros.com>
    Email Sticker: My Boss is a Jewish carpenter
    http://www.GoboLinux.org | User #00010110

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