Ubuntu
linux package

  1. Bug #668392
  2. Comment #27

Comment 27 for bug 668392

Revision history for this message
Markus Feist (markus-feist-net) wrote : Re: HP blu-ray drive gets softreset failed errors on 64 bit but not 32 bit

I found the difference between Fedora and Ubuntu. The controller (an AMD 890GX so a SB850 Southbridge) is managed in Fedora by the kernel modul ata_generic in Ubuntu by ahci.
While searching how to switch the module I found, that kernel parameter libata.force.
With "libata.force=5:nohrst" as kernel parameter my drive was working (5 is the ata link of my drive). The drive seems to have problems with the hard reset while booting. I will use this as tempory workaround since the problem is solved.
(You can add kernel parameters in /etc/default/grub in GRUB_CMDLINE_LINUX and calling sudo update-grub2.)
Only one problem for the workaround is left (for me) I have two sata/ide controllers on the motherboard most times the pata_jmicron ist first sometimes ahci, so ata5 is somtimes ata3.