Mailinglist Archive: opensuse (4498 mails)

["Matthew Stringer" <qube@xxxxxxxxxxxxxx>]

The Thursday 2006-11-02 at 19:44 +0100, Istvan Gabor wrote:

> I have suse 10.1.
> The system has a cd-rw and a dvd-rw drive.
> After booting the system Yast dma status check reports that 
> for both drive the dma is on.  After a certain time checking 
> again Yast reports that dma is off for both drives.
> If I want to turn dma in Yast it gives an error message:
> 
> "An error occured while activating the changes. Cannot set 
> required mode '%1' for device %2."
> 
> 
> At the same time according to hdparm dma is on:
> 
> # hdparm -i /dev/hdc

Forget Yast. Use:

hdparm -d /dev/hdc

Or

hdparm -d -c -u /dev/hdc

to see the state. Then use "- 1" to activate if possible.


> NeroLINUX also claimed that dma was off, and burning a 
> regular dvd took 40 min when the speed was set to 6x so I 
> concluded that dma was off. (Is that correct?)

Probably. Bu why don't you use k3b instead of a windows in linux thing?

> 
> Questions:
> 1. What can cause that dma is turned off?


I once had a SUSE box, DMA was off on the drive, I switched it on, it stated
that turning it on could cause data loss.

I turned it on anyway and it pulped the partition.


Suppose there's no risk with a CD drive but worth a consideration on a hard
drive.

Matthew