Hi, First, I'd like to say that I know that the question is not laptop specific, not even FC-specific, but I think there's a chance that someone can at least show me a right place to investigate further. To the point: I use FC5 on Dell Inspiron E1505 (vel 6400) with ICH7 chipset. It has SATA harddisk and IDE DVD drive[1]. CD/DVD burning is slow as well as playing DVDs, because DMA for this drive is turned off and it's impossible to enable it[2]. There are some tips (rather old, for kernels<2.6.13 AFAIK) around. Eg. adding 'hdc=noprobe' or 'combined_mode=libata' to kernel boot command line - that makes dvd drive to work in scsi-emulation mode. And this is where my questions go: 1. What is the current status of ata_piix/libata, is there a work going on to make it possible to enable DMA for IDE drive in native mode? 2. If scsi-emulation is still required to get reasonable transfers, what is the right way to set it up? regards, [1] 00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7 Family) Serial ATA Storage Controller IDE (rev 01) [2] <code> [root@moonstone ~]# hdparm -d1 /dev/hdc /dev/hdc: setting using_dma to 1 (on) HDIO_SET_DMA failed: Operation not permitted using_dma = 0 (off) </code> -- Jaroslaw Gorny
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