[linux-dvb] random memory corruptions with asus p7131 (Re: asus p7131 vs ZDF?)

Mauro Carvalho Chehab mchehab at infradead.org
Fri Oct 19 21:34:27 CEST 2007

> Wait! Please clarify whether you think that your problem is caused by
> the _saa7134_ driver or the _saa7146_ driver.
> You wrote 'that <memory corruption> is caused by the saa7146 driver,'
> Is this a typo? Did you mean saa7134?

You are right my statement is wrong. To get it right, my asus has the
• tda10046a
• saa7131e
and not the saa7146 (which my brain generated using the numbers 7131 /

On saa7131 board, the memory corruptions may be caused by V4L overlay 
interface. On overlay mode, the driver sets the device to do a PCI2PCI memory 
transfer. This is known to cause troubles with some VIA and SIS motherboards.

If you load saa7134 with no_overlay=1, overlay mode will be disabled. Could 
you please test if this solves the issue?

AFAIK, some newer motherboards that had this problem can be corrected by 
upgrading its bios.


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