I just did som investigation of the source code of ata_piix.c and although I'm not familiar with driver programming I think the issue is that ata_piix sees my sata controller, which is in IDE mode, and cannot be switched to AHCI, as a controller in AHCI mode. In the dmesg output I see
MAP [P0 P2 P1 P3] whereas in the sourcecode in kernel 2.6.31.4 drivers/ata/ata_piix.x, line 394, it looks like it should actually read MAP [P0 P2 IDE IDE] for a controller in IDE mode, according to the source comments. Is there a way to force the ata_piix driver into IDE mode in some way? -- 2.6.27 SATA drives not accessible at boot time, 2.6.24 working https://bugs.launchpad.net/bugs/294123 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs