hdparm -d 1 -X34 /dev/hdx
and you should be happy as a clam
]]>Ody so you know the DMA gets dropped on regular cds as well. Any attempt to mount any media will immediately kill the dma. The thing is with the other vidoe files I have have the lack of dma does not seem to pose an issue.
Anyway i will play with it some more and find the lilo syntax for making this drive scsi as well and see what that does. I would like to exhaust my tinkering options until i determine that it my be hardware related. It is stupid of me i know but i believe that a 3 or 4 months old low use device should not be packing it in
]]>Does anyone have a burner as slave and regular dvd/cdrom drive as master and not have any troubles with either? I have not tested my burner yet but according to the junk i have been reading i may have issues with that as well.
]]>(The DMA is commonly dropped right when i press the dvdnav button on xine)
]]>hdc: cdrom_decode_status: error=0x40
hdc: DMA disabled
hdc: ATAPI reset complete
hdc: drive_cmd: status=0x51 { DriveReady SeekComplete Error }
hdc: drive_cmd: error=0x04
hdc: cdrom_decode_status: status=0x51 { DriveReady SeekComplete Error }
hdc: cdrom_decode_status: error=0x40
hdc: cdrom_decode_status: status=0x51 { DriveReady SeekComplete Error }
hdc: cdrom_decode_status: error=0x40
hdc: cdrom_decode_status: status=0x51 { DriveReady SeekComplete Error }
hdc: cdrom_decode_status: error=0x40
hdc: cdrom_decode_status: status=0x51 { DriveReady SeekComplete Error }
hdc: cdrom_decode_status: error=0x40
hdc: DMA disabled
hdc: ATAPI reset complete
hdc: drive_cmd: status=0x51 { DriveReady SeekComplete Error }
hdc: drive_cmd: error=0x04
Does this mean my drive is forked?
]]>yes i do have the scsi-ide module loaded but I personally have never had it muck up anything else I have run two linux distros successfully with both the ide scsi and regular ide modules active and operational. Since the ide-cdrom module could not be modprobed or insmoded i assumed it was not there or not set in the kernel (sorry but i don't even know which file/directory to check in Arch to see which modules are set ands which are not).
Diabling the scsi emulation module is not an option that would create to much of a pain in the ass when i wan t to use my cdrw. (yes i have two drives cdrw and cdrom/dvd) Added to that i know both can operate side by side without either effecting the performance of the other, so why have two gimped decvices )or one gimped and one not)?
]]>My dvd is performing poorly it is very jerky (ie drops alot of frames). I can use hdparm to turn dma on and it stick for a bit but hen it gets dropped. DMA being on seems to make a difference.
I remember when i was testing the pos gentoo i had the same troubles and modprobing in ide-cd or something like that solved it though the option does not appear to be available here.
any help is most welcome.
]]>