Messages in this thread | | | Date | Fri, 16 Mar 2007 19:39:02 -0300 | From | John Coppens <> | Subject | Re: Conflict between ide and usb? |
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On Fri, 16 Mar 2007 16:34:15 -0400 lsorense@csclub.uwaterloo.ca (Lennart Sorensen) wrote:
> Do you even have DMA enabled for the DVD drive? Without it it will be > very slow and painful for the CPU. I also have noticed that many fast > (16x) DVD writers must have an 80 wire cable or they won't work > correctly and do nasty things to the system. > > Check /proc/ide/hdX/settings|grep dma and see if it says 1 0 1 or 0 0 1.
I _knew_ I enabled the DMA, but it seems that is switches off when I start the transfer:
hdc: DMA disabled hdc: ide_intr: huh? expected NULL handler on exit hdc: ATAPI reset complete ISO 9660 Extensions: RRIP_1991A VFS: busy inodes on changed media.
This is on hdc, which is the DVD. Harddisk has DMA on.
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