Ubuntu
linux package

  1. Bug #916677
  2. Comment #39

Comment 39 for bug 916677

Revision history for this message
Paladin24 (happyworm24) wrote : Re: unstable boot on Asrock 990FX Extreme4 motherboard probably related to the onboard Marvel SE9120 SATA controller

Ok, the solution above works for me 5 out of 5 on kernel 3.7.6 and kernel 3.5.0-23. I belive that it will work on all kernels.
Here is it:
Jumper position on DVD-ROM - Slave. (you don't need second jumper, so Slave position is ok).
Jumper position on HDD - Master.
Then do in console (I have used leafpad because I run Xubuntu):
sudo leafpad /etc/default/grub
Find the line:
GRUB_CMDLINE_LINUX=""
and replace it on:
GRUB_CMDLINE_LINUX="libata.dma=1"
save changes and close text editor.
Then type in console:
sudo update-grub
Reboot.

I belive that this will turn your CD/DVD-ROM in PIO mode instead of DMA.

I think this is a problem with VIA VT6415, because I have found post with the same problem on motherboards of other developers with VIA VT6415.

Hope this help you and hope that this problem will be resolved in new kernel and we could use UDMA on our CD/DVD-ROMs.