Re: [linux-dvb] TeVii S470 (cx23885 / ds3000) makes the machine unstable

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Monday, May 9, 2011, 7:39:09 PM, you wrote:

> I still have this very annoying issue. I see no obvious reason, but
> my DVB-S card just stops locking the signal, I get really a lot of
> these errors in my syslog:

> May  9 19:04:33 localhost kernel: ds3000_readreg: reg=0xd(error=-5)
> May  9 19:04:33 localhost kernel: ds3000_writereg: writereg
> error(err == -5, reg == 0x03, value == 0x12)
> May  9 19:04:33 localhost kernel: ds3000_tuner_readreg: reg=0x3d(error=-5)
> May  9 19:04:33 localhost kernel: ds3000_writereg: writereg
> error(err == -5, reg == 0x03, value == 0x12)
> May  9 19:04:33 localhost kernel: ds3000_tuner_readreg: reg=0x21(error=-5)
> May  9 19:04:33 localhost kernel: ds3000_readreg: reg=0x8c(error=-5)
> May  9 19:04:33 localhost kernel: ds3000_readreg: reg=0x8d(error=-5)

> and then the machine just freezes. Could it be some buffer overflow?

> How could I track it?


> The machine is perfectly stable when S470 card is out...


Sorry for replying to my own's post, as I just want to make this
information available in case someone would find this mail thread
later.

The issue appear to be related to S470 overheating. I discovered that
my S470 became very-very hot right after I power the machine up, and
recently it started to freeze right after the boot. So the board was
shipped to the dealer for tests / exchange, and my machine is back to
normal operation (without a DVB-S2 card, temporarily).

My friend's board is slightly cooler - so putting a fan blowing
directly on the board seem to solve the problem for him completely
(no freezes for three days now).

So it's very likely to be hardware-related, and not a driver /
configuration issue.


-- 
Best regards,
 Andrew             

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