Am Mittwoch, 23. Oktober 2002 13:30 schrieb Gregory K. Meyer: > On Wednesday 23 October 2002 05:20 am, Steffen Barszus wrote: > > It sound to me like it is a problem of not using dma. I'm not a > > linux-guru , but similar problems you get on all OSs without using DMA. > > Try hdparm on your cd-rw and the drives there the data is coming from. > > Maybe it will be better after that. > > You are right, the dma is turned off on my cd devices. hdparm -d will not > turn it on. > Have you tried it with the /dev/scd* device or the real ide-device ( assuming /dev/hdc ): hdparm -d1 /dev/hdc turns dma on on my system, regardless if it is a harddrive or a cd-rw or dvd.
> I have had problems similar related to my hard drives, where Mandrake > turned off dma on VIA chipsets in the final kernel to avoid data corruption > problems with certain hardware configurations. My hard drives are fine > with this kernel, but the ATAPI devices are off. > You are right, as i've read in the /etc/rc.d/rcinitrd, dma is turned off by default for non-disks, assuming to get more troubles with as without troubles. > Can anybody comment as to whether this was purposeful? > > Is there an option I can compile into the kernel to fix this? > Simple turning on dma should do the trick I guess > BTW, my apologies for sending my previous message receipt requested, that > was an accident. Greets Steffen
