>>>>> "Ferenc" == Ferenc Engard writes: Ferenc> Keyser Soze wrote: >> > But the real problem is, that I wanted to benchmark the system while > the scrolling continues, and issued a dd if=/dev/mem of=/dev/null > bs=1024 count=32768 command. For the second go, the system freezed > like a good refrigerator. No kernel panic, nothing, just freezed. >> >> Try turning off ide dma and see if that helps. You will lose very >> little by turning off udma on this system and I'll bet you end up >> being more stable. Ferenc> I will try it on Monday, as the eval board is in my Ferenc> workplace. What is the connection between ide dma, memory read Ferenc> and the hw video accel? The ide dma setting alters the way Ferenc> /dev/mem is read? :-O [...] It can have interesting things in common, but NS won't tell you about them without NDAs, I'm afraid -- at least that's how it used to be. I've had IDE DMA interfere with video input, for instance. So asking NS is indeed the best answer in this thread. --J.