View Full Version : [ubuntu] DMA enabling problems

June 20th, 2008, 01:04 PM
I know there are many threads on this one but, i am getting some problems.
When I run hdpram"" i get something like ""ioctl"" and it doesnt change the settings
My drives run painfully slow incl. DVD
Help appreciated.

June 20th, 2008, 01:59 PM
ANyone. I Am here ask me to do some diaganostics or whatever

June 21st, 2008, 01:29 PM
Reply anyone. I really dont know what extra info to give. ASk me!!

June 21st, 2008, 01:49 PM
Hi. Did you run hdparm as root?

sudo hdparm -d1 -k1 /dev/dvd
(/dev/dvd is just an example).

June 21st, 2008, 04:02 PM
This might help and might not - I had a dodgy cable do that to me - spent ages until I saw a boot message regarding Primary IDE cable error

June 21st, 2008, 04:05 PM
If your running 7.10 or 8.04 in most cases hdparm can no longer set anything but can give some info.
sudo hdparm -I /dev/dvdor /dev/dvd1, /dev/scd0 ect.
Dma should be enabled by default though I do remember a thread about where it was disabled due to a conflict - can't find atm
Maybe look for references in your logs or
grep ' DMA' /var/log/syslog or .../dmesg, /debug ect.