Public bug reported:
We have a set of ThinkPads (T410 and T540p) that are failing to boot
(not locating their root fs device) with post-release kernels.
The AHCI adaptor (0000:00:1f.5) simply isn't visible in
/sys/bus/pci/devices/
The problem is apparent in 4.2.0.25-30, and not in 4.2.0-16.19
If the SATA device mode is changed from AHCI to IDE emulation, then they
reliably boot.
ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: linux-image-4.2.0-16-generic 4.2.0-16.19
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Uname: Linux 4.2.0-16-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
CurrentDesktop: Unity
Date: Wed Jan 27 16:41:50 2016
HibernationDevice: RESUME=UUID=185cef3a-6688-4034-a910-4f6ecdea2c20
IwConfig:
enp0s25 no wireless extensions.
lo no wireless extensions.
enx8a549328aae7 no wireless extensions.
MachineType: LENOVO 253725M
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-16-generic
root=UUID=e5bcc2d8-520b-4648-9a08-0cc1d65152fd ro BOOTIF=01-f0-de-f1-49-05-1b
quiet splash crashkernel=384M-:128M
RelatedPackageVersions:
linux-restricted-modules-4.2.0-16-generic N/A
linux-backports-modules-4.2.0-16-generic N/A
linux-firmware 1.149.3
SourcePackage: linux
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/01/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 6IET75WW (1.35 )
dmi.board.name: 253725M
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvr6IET75WW(1.35):bd02/01/2011:svnLENOVO:pn253725M:pvrThinkPadT410:rvnLENOVO:rn253725M:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 253725M
dmi.product.version: ThinkPad T410
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug wily
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https://bugs.launchpad.net/bugs/1538406
Title:
REGRESSION ThinkPad T410 fails to see AHCI device on boot with wily
SRU kernels
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