Public bug reported:
I have recently purchased a new machine, with a Gigabyte GA-EP35-DS3R
motherboard. This motherboard includes 2 disk controllers. An Intel
ICH9R SATA controller, supporting up to 6 SATA ports, and a
JMicron/Gigabyte SATA controller supporting 2 SATA, and 1 PATA ports.
The BIOS allows both controllers to be configured in a couple of ways.
For the intel controller, the setting to adjust the modes is the "SATA
RAID/AHCI Mode" option, found in the integrated peripherals menu in the
BIOS. This option can be set to either disabled, AHCI, or RAID. If set
to Disabled, the Gigabyte BIOS detects and makes the connected devices
available as any standard IDE device would be by any BIOS. When set to
either AHCI or RAID, the Intel BIOS is loaded, and detects any connected
devices.
For the Jmicron controller, the option used to set the mode is the
"Onboard SATA/IDE Ctrl Mode" option, again in the integrated peripherals
menu of the BIOS. The options are IDE, AHCI, and RAID/IDE. IDE mode
again allows the gigabyte BIOS to make devices available similar to the
disabled mode for the Intel controller, and AHCI and RAID/IDE are the
same as for the Intel controller.
My DVD-ROM drive, A Pioneer DVR-115 is connected to the JMicron
controller, via SATA. The device itself is a SATA DVD writer.
When attempting to boot the latest Ubuntu hardy daily live CD, the following
behavior is observed:
* If the Intel controller is set to either RAID or AHCI, I am dropped to an
initramfs prompt.
* If the Intel controller is set to disabled, the disk boots normally.
* The JMicron controller can be set to either AHCI, RAID/IDE, or RAID, and as
long as the Intel controller is set to disabled, the disk boots normally.
I am running the latest stable/non-beta BIOS for this board, and have 4
hard drives connected to the Intel controller, and as already stated,
the DVD-ROM drive connected to the JMicron controller.
One thing I noticed was differences in what the udevadm command gave for
output for the CD/DVD device. When the Intel controller is in AHCI/RAID,
the command /sbin/udevadm info -q name -p /block/sr0 returned sr0,
whereas if the Intel controller was disabled/in IDE mode, the same
command would return scd0.
Attached are various logs of both a successful boot, and a failed boot,
to help try and diagnose the issue.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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Live CD boot issues with Jmicron/Intel SATA controllers on Gigabyte board.
https://bugs.launchpad.net/bugs/203719
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