Nova-T & "cx88_wakeup: 2 buffers handled (should be 1)"

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Hi,

using a Nova-T dvb card, I get the following in /var/log/messages...

22:09:54 kernel: cx88_wakeup: 2 buffers handled (should be 1)
22:09:57 kernel: cx88_wakeup: 2 buffers handled (should be 1)
22:10:06 kernel: cx88_wakeup: 2 buffers handled (should be 1)
22:10:09 kernel: cx88_wakeup: 2 buffers handled (should be 1)
22:10:12 kernel: cx88_wakeup: 2 buffers handled (should be 1)
22:10:15 kernel: cx88_wakeup: 2 buffers handled (should be 1)

...every few seconds while watching TV with xine or other dvb-apps. The
event results in a visible interruption of the video stream.


Looking on the net for solutions, I found these suggestions:

- changing PCI latency in the BIOS settings

- putting the card into a different PCI slot

- using "pci=routeirq" or "pci=noacpi" kernel boot parameters

I tried all these, but it did NOT help.

So, where should I look for solutions now?


The system is an Intel 965 chipset mainboard, running a default Ubuntu
"Feisty" 7.04 with its stock kernel (package 2.6.20-15-generic).

The dvb card is fine, it works without these problems with a different
mainboard.


Hope this info helps:

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

# egrep "CPU|cx88" /proc/interrupts

    CPU0  CPU1
23: 21861 407216 IO-APIC-fasteoi  cx88[0], cx88[0], HDA Intel

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

# lspci -v

07:01.0 Multimedia video controller: Conexant CX23880/1/2/3 PCI Video
and Audio
        Subsystem: Hauppauge computer works Inc. Unknown device 9002
        Flags: bus master, medium devsel, latency 64, IRQ 23
        Memory at 92000000 (32-bit, non-prefetchable) [size=16M]
        Capabilities: [44] Vital Product Data
        Capabilities: [4c] Power Management version 2

07:01.2 Multimedia controller: Conexant CX23880/1/2/3 PCI Video and
Audio Decode
        Subsystem: Hauppauge computer works Inc. Nova-T DVB-T Model 909
        Flags: bus master, medium devsel, latency 64, IRQ 23
        Memory at 91000000 (32-bit, non-prefetchable) [size=16M]
        Capabilities: [4c] Power Management version 2

07:01.4 Multimedia controller: Conexant CX23880/1/2/3 PCI Video and
Audio Decode
        Subsystem: Hauppauge computer works Inc. Nova-T DVB-T Model 909
        Flags: bus master, medium devsel, latency 64, IRQ 10
        Memory at 90000000 (32-bit, non-prefetchable) [size=16M]
        Capabilities: [4c] Power Management version 2

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

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