On Sat, 2005-08-13 at 01:22 +1000, Rodd Clarkson wrote: > On Fri, 2005-08-12 at 05:55 -0400, Alan Cox wrote: > > On Fri, Aug 12, 2005 at 10:50:41AM +1000, Rodd Clarkson wrote: > > > setting using_dma to 1 (on) > > > HDIO_SET_DMA failed: Operation not permitted > > > using_dma = 0 (off) > > > > > > This in an a brand new dell laptop with a Fujitsu drive that supports > > > UltraDMA. > > > > What does lspci show for your IDE controller. From the above it may just not > > be supported yet. > > 00:1f.2 IDE interface: Intel Corporation 82801FBM (ICH6M) SATA Controller (rev 03) Okay, and lspci -v says 00:1f.2 IDE interface: Intel Corporation 82801FBM (ICH6M) SATA Controller (rev 03) (prog-if 80 [Master]) Subsystem: Dell: Unknown device 0189 Flags: 66Mhz, medium devsel, IRQ 5 I/O ports at <ignored> I/O ports at <ignored> I/O ports at <ignored> I/O ports at <ignored> I/O ports at bfa0 [size=16] Capabilities: <available only to root> I've done a little more research into this and I've found this very interesting page on people with the same problem with me (and what appears to be the same IDE interface. see: http://www.linuxquestions.org/questions/history/340897 Also, on this page and Dell 6000 (which use the same IDE device) ( http://james.jamesandkristin.net/?p=19 ) I found this: “in /usr/src/linux/include/linux/libata.h change #undef ATA_ENABLE_ATAPI /* define to enable ATAPI support */ to #define ATA_ENABLE_ATAPI /* define to enable ATAPI support */” Is this enough to start getting this issue addressed, or should I lodge a bugzilla, or should I do more research? Obviously with a lot of new laptops (see first link) using this chipset from Intel, this would be a good thing to have fixed in terms of performance (both in FC5 and FC4). Obviously this affects from HDD and CD/DVD performance. Rodd -- "It's a fine line between denial and faith. It's much better on my side" -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx http://www.redhat.com/mailman/listinfo/fedora-devel-list