This sounds almost exactly like the reboot issue I've been having. I'm 
using a AMD processor, but the motherboard is VIA chipsets. I am running 
CentOS. The kernel reports itself as 2.6.18, but there a lot of 
backporting in it.

I am going to start compiling vanilla kernels and see if I can find one 
where the PVR-500 is stable. I'm starting with 2.6.25 and working backwards.

I am not willing to bet on my success. My issue could easily be a 
hardware problem. My gut says it's not, though.

Jeroen Roos wrote:
> Hello all,
> 
> I have a PVR-500 card on a Via Epia EN15000 board. I am running Gentoo
> Linux on it for MyhthTV. Ever since upgrading from kernel 2.6.22, I have
> been having reboots on my system whenever it tries recording something.
> Because I have had some issues with the SATA drivers on it previously, I
>  have always suspected that to be the problem, however, after some more
> research I am now pretty sure that the IVTV driver is the culprit.
> 
> When using kernel 2.6.22 (with Gentoo patches) everything works fine. I
> have tried many different kernels after that, and with all the system
> eventually reboots. The current I have running is the vanilla 2.6.29.4
> kernel, still the same problem.
> 
> I can easily reproduce the problem by running:
> 
> dd if=/dev/video0 of=/dev/null bs=64k count=10000
> 
> usually it reboots before it reaches 5000 blocks, sometimes it takes a
> little longer, but eventually the system reboots.
> 
> I think that I rule out all other components of the system by copying to
> /dev/null.
> 
> Any video recorded with the card is good (that is, when it's not sent to
> /dev/null :-) )
> 
> I have checked http://www.ivtvdriver.org/index.php/Howto and everything
> seems to be installed as it should be, after that I checked
> http://www.ivtvdriver.org/index.php/Troubleshooting, but that does not
> seem to mention anything that is describing my situation.
> 
> I have tried setting debug to 127, but I don't see anything that looks
> like an error, it also doesn't display anything just before crashing.
> 
> the dmesg | tac ... etc script on the "how to ask for help" page does
> not give any output, so I'll just include dmesg | grep ivtv...
> 
> I think I am using the in-kernel version of ivtv, but I am not 100%
> sure, how do I check?
> 
> I have run out of options on what to try next, any ideas?
> 
> 
> Thanks,
> Jeroen
> 
> 
> video ~ # dmesg | grep ivtv
> ivtv: Start initialization, version 1.4.0
> ivtv0: Initializing card 0
> ivtv0: Autodetected Hauppauge card (cx23416 based)
> ivtv 0000:04:08.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
> ivtv0: Unreasonably low latency timer, setting to 64 (was 32)
> ivtv0: Autodetected WinTV PVR 500 (unit #1)
> cx25840 1-0044: cx25843-24 found @ 0x88 (ivtv i2c driver #0)
> tuner 1-0060: chip found @ 0xc0 (ivtv i2c driver #0)
> tuner 1-0043: chip found @ 0x86 (ivtv i2c driver #0)
> tuner 1-0061: chip found @ 0xc2 (ivtv i2c driver #0)
> wm8775 1-001b: chip found @ 0x36 (ivtv i2c driver #0)
> IRQ 17/ivtv0: IRQF_DISABLED is not guaranteed on shared IRQs
> ivtv0: Registered device video0 for encoder MPG (4096 kB)
> ivtv0: Registered device video32 for encoder YUV (2048 kB)
> ivtv0: Registered device vbi0 for encoder VBI (1024 kB)
> ivtv0: Registered device video24 for encoder PCM (320 kB)
> ivtv0: Registered device radio0 for encoder radio
> ivtv0: Initialized card: WinTV PVR 500 (unit #1)
> ivtv1: Initializing card 1
> ivtv1: Autodetected Hauppauge card (cx23416 based)
> ivtv 0000:04:09.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
> ivtv1: Unreasonably low latency timer, setting to 64 (was 32)
> ivtv1: Correcting tveeprom data: no radio present on second unit
> ivtv1: Autodetected WinTV PVR 500 (unit #2)
> cx25840 2-0044: cx25843-24 found @ 0x88 (ivtv i2c driver #1)
> tuner 2-0043: chip found @ 0x86 (ivtv i2c driver #1)
> tuner 2-0061: chip found @ 0xc2 (ivtv i2c driver #1)
> wm8775 2-001b: chip found @ 0x36 (ivtv i2c driver #1)
> IRQ 18/ivtv1: IRQF_DISABLED is not guaranteed on shared IRQs
> ivtv1: Registered device video1 for encoder MPG (4096 kB)
> ivtv1: Registered device video33 for encoder YUV (2048 kB)
> ivtv1: Registered device vbi1 for encoder VBI (1024 kB)
> ivtv1: Registered device video25 for encoder PCM (320 kB)
> ivtv1: Initialized card: WinTV PVR 500 (unit #2)
> ivtv: End initialization
> ivtv 0000:04:08.0: firmware: requesting v4l-cx2341x-enc.fw
> ivtv0: Loaded v4l-cx2341x-enc.fw firmware (376836 bytes)
> ivtv0: Encoder revision: 0x02060039
> ivtv 0000:04:09.0: firmware: requesting v4l-cx2341x-enc.fw
> ivtv1: Loaded v4l-cx2341x-enc.fw firmware (376836 bytes)
> ivtv1: Encoder revision: 0x02060039
> 
> video ~ # lspci | grep video
> 04:08.0 Multimedia video controller: Internext Compression Inc iTVC16
> (CX23416) MPEG-2 Encoder (rev 01)
> 04:09.0 Multimedia video controller: Internext Compression Inc iTVC16
> (CX23416) MPEG-2 Encoder (rev 01)
> 
> video ~ # uname -a
> Linux video 2.6.29.4 #1 SMP Wed Jun 10 20:58:40 CEST 2009 i686 VIA
> Esther processor 1500MHz CentaurHauls GNU/Linux
> 
> _______________________________________________
> ivtv-users mailing list
> [email protected]
> http://ivtvdriver.org/mailman/listinfo/ivtv-users


-- 
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."--Benjamin Franklin
" 'Necessity' is the plea for every infringement of human liberty; it
is the argument of tyrants; it is the creed of slaves."--William Pitt

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