Messages in this thread | | | Date | Tue, 27 May 2003 17:29:45 -0700 | From | Mike Fedyk <> | Subject | Re: 2.4.21-rc5: DMA disabled for IDE Cdrom, works with 2.4.20 |
| |
On Wed, May 28, 2003 at 02:03:52AM +0200, frahm@irsamc.ups-tlse.fr wrote: > I have now disabled "CONFIG_IDEDMA_PCI_AUTO" such that initially DMA is > disabled for /dev/hda and /dev/hdb. I have then enabled DMA only for > /dev/hdb with hdparm (keeping DMA disabled for /dev/hda) but the problem > persists and DMA for /dev/hdb will be disabled when I try to mount a > cdrom. It seems that the DMA-setting for /dev/hda has no influence on > this.
Try using hdparm -d1 -X34 on /dev/hda and /dev/hdb
This will turn on DMA and use the same DMA mode for both devices. I wouldn't be surprised if the new IDE was more strict (maybe more spec compliant?) than the previous version. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |