Public bug reported: Had some time to fool around with Ubuntu on a PowerBook3,5. I discovered that the 3.16 kernel has a regression in it, it does not set CONFIG_PATA_MACIO=y. As a result /dev/sda is not available in the initramfs and the machine cannot mount the root filesystem. This is a regression from the 3.13.0-37 kernel in trusty.
To reproduce: 1) Set up a Powerbook or Powermac running Ubuntu (I have 12.04 on a Powerbook3,5, with the 3.13.0-37 kernel installed) 2) Install the 3.16.0-21.28 kernel from https://launchpad.net/ubuntu/+source/linux/3.16.0-21.28/+build/6437990 3) Reboot Expected results: The machine reboots normally Actual results: Boot fails in the initramfs with the error "gave up waiting for boot device" >From the busy box prompt, running "modprobe pata_macio" then "exit" allows the machine to keep booting. A permanent workaround is to add pata_macio to /etc/initramfs- tools/modules and then update the initramfs There is a brief discussion of a similar problem in Precise in bug 876982. CONFIG_PATA_MACIO=y was set in 3.2.0-2.6. ** Affects: linux (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1378894 Title: Set CONFIG_PATA_MACIO=y To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1378894/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs