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. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/916677 Title: Boot problem with VIA VT6415 PATA IDE Host Controller and PATA CD/DVD- ROM (checked on ASRock 990fx and 890fx motherboards) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/916677/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
