@Alex,
Your ACPI DSDT contains the following ACPI code:
Name (GUID, ToUUID ("33db4d5b-1ff7-401c-9657-7441c03dd766") /* PCI
Host Bridge Device */)
Name (SUPP, Zero)
Name (CTRL, Zero)
Name (XCNT, Zero)
Method (_OSC, 4, Serialized) // _OSC: Operating System Capabilities
{
Store (Arg3, Local0)
CreateDWordField (Local0, Zero, CDW1)
CreateDWordField (Local0, 0x04, CDW2)
CreateDWordField (Local0, 0x08, CDW3)
If (LAnd (LEqual (Arg0, GUID), NEXP)) // I believe this
comparison is false...
{
Store (CDW2, SUPP) /* \_SB_.PCI0.SUPP */
Store (CDW3, CTRL) /* \_SB_.PCI0.CTRL */
If (LAnd (LEqual (TBTS, One), LEqual (TNAT, One)))
{
And (CTRL, 0xFFFFFFF7, CTRL) /* \_SB_.PCI0.CTRL */
}
If (Not (And (CDW1, One)))
{
If (And (CTRL, One))
{
NHPG ()
}
If (And (CTRL, 0x04))
{
NPME ()
}
}
If (LNotEqual (Arg1, One))
{
Or (CDW1, 0x08, CDW1) /* \_SB_.PCI0._OSC.CDW1 */
}
If (LNotEqual (CDW3, CTRL))
{
Or (CDW1, 0x10, CDW1) /* \_SB_.PCI0._OSC.CDW1 */
}
Store (CTRL, CDW3) /* \_SB_.PCI0._OSC.CDW3 */
Store (CTRL, OSCC) /* \OSCC */
Return (Local0)
}
Else // ... we end up here, bit 2 is set, indicating
unrecognised UUID.
{
Or (CDW1, 0x04, CDW1) /* \_SB_.PCI0._OSC.CDW1 */
Return (Local0)
}
}
>From what I can understand from your firmware, it tries to match against
a specific UUID and it does not match, so bit 2 is set in the _OSC
return code which informs the kernel that it is not recognized. Hence
stuff like ASPM capabilities are not enabled. If you require ASPM, gave
you tried forcing it to be enabled using the kernel parameter
"pcie_aspm=force" ?
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1349740
Title:
acpi PNP0A08:00: _OSC failed (AE_ERROR); disabling ASPM
Status in Linux:
Unknown
Status in linux package in Ubuntu:
Confirmed
Bug description:
[ 0.183201] acpi PNP0A08:00: _OSC failed (AE_ERROR); disabling ASPM
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: linux-image-3.16.0-6-generic 3.16.0-6.11
ProcVersionSignature: Ubuntu 3.16.0-6.11-generic 3.16.0-rc7
Uname: Linux 3.16.0-6-generic x86_64
ApportVersion: 2.14.4-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: caravena 2878 F.... pulseaudio
CurrentDesktop: GNOME
Date: Tue Jul 29 04:47:24 2014
HibernationDevice: RESUME=UUID=360bd2d2-4f44-4311-86d6-4781ac81ee87
InstallationDate: Installed on 2014-04-27 (92 days ago)
InstallationMedia: Ubuntu-GNOME 14.04 LTS "Trusty Tahr" - Release amd64
(20140416.2)
MachineType: SAMSUNG ELECTRONICS CO., LTD. 530U3C/530U4C
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-6-generic
root=UUID=13144268-2374-4154-83f1-c35d81306190 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.16.0-6-generic N/A
linux-backports-modules-3.16.0-6-generic N/A
linux-firmware 1.132
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/15/2013
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: P14AAJ
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: SAMSUNG_NP1234567890
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: FAB1
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: 0.1
dmi.modalias:
dmi:bvnPhoenixTechnologiesLtd.:bvrP14AAJ:bd04/15/2013:svnSAMSUNGELECTRONICSCO.,LTD.:pn530U3C/530U4C:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rnSAMSUNG_NP1234567890:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1:
dmi.product.name: 530U3C/530U4C
dmi.product.version: 0.1
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
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