[Bug 20899] New: 2.6.15-7-686 kernel breaks PCI probe order on IBM Thinkpad

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Ubuntu | linux

           Summary: 2.6.15-7-686 kernel breaks PCI probe order on IBM
                    Thinkpad
           Product: Ubuntu
           Version: unspecified
          Platform: i386
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: linux
        AssignedTo: ben.collins at ubuntu.com
        ReportedBy: timw at splhi.com
         QAContact: kernel-bugs at lists.ubuntu.com


I am testing out Dapper on a Thinkpad T42.
On upgrade from 2.6.15-6-686 to 2.6.15-7-686, the machine fails to mount the
root filesystem when attached to the docking station. The root partition is
enumerated as hde5 instead of hda5 when docked. The internal IDE controller is:
0000:00:1f.1 IDE interface: Intel Corporation 82801DBM (ICH4-M) IDE Controller
(rev 01)
the docking station controller is
0000:09:01.0 IDE interface: Silicon Image, Inc. PCI0648 (rev 01)
so clearly, the internal controller should be picked up first. Not sure if this
is a kernel change or a udev/initramfs change as they both were upgraded around
the same time. I am quite happy to debug if given direction.

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