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[Bryan Morrison <skeeter_mcbee@xxxxxxxx>]

Bug is apparent in kernel 3.16 and 3.17 as well.

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https://bugs.launchpad.net/bugs/1416189

Title:
  AMD [Firmware Bug]: cpu 0, try to use APIC500 (LVT offset 0) for
  vector 0xf9, but the register is already in use for vector 0x400 on
  another cpu

Status in linux-firmware package in Ubuntu:
  Confirmed

Bug description:
  After running the system testing default and hwsubmit tests I see in
  dmesg -l err the following firmware bug noted:

  [Firmware Bug]: cpu 0, try to use APIC500 (LVT offset 0) for vector 0xf9, but the register is already in use for vector 0x400 on another cpu
  [ 1563.122513] [Firmware Bug]: cpu 0, failed to setup threshold interrupt for bank 4, block 0 (MSR00000413=0xc000000001000000)
  [ 1563.122514] [Firmware Bug]: cpu 0, try to use APIC500 (LVT offset 0) for vector 0xf9, but the register is already in use for vector 0x400 on another cpu
  [ 1563.122515] [Firmware Bug]: cpu 0, failed to setup threshold interrupt for bank 4, block 1 (MSRC0000408=0xc000000001000000)

  This is a fresh install of 14.10 on an HP laptop.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: linux-firmware 1.138.1
  ProcVersionSignature: Ubuntu 3.16.0-29.39-generic 3.16.7-ckt2
  Uname: Linux 3.16.0-29-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8.1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu Jan 29 21:28:25 2015
  Dependencies:
   
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-01-29 (0 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Alpha amd64 (20141015)
  PackageArchitecture: all
  SourcePackage: linux-firmware
  UpgradeStatus: No upgrade log present (probably fresh install)
  --- 
  ApportVersion: 2.14.7-0ubuntu8.1
  Architecture: amd64
  CurrentDesktop: Unity
  Dependencies:
   
  DistroRelease: Ubuntu 14.10
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-01-29 (0 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Alpha amd64 (20141015)
  Package: linux-firmware 1.138.1
  PackageArchitecture: all
  ProcVersionSignature: Ubuntu 3.16.0-29.39-generic 3.16.7-ckt2
  Tags:  utopic
  Uname: Linux 3.16.0-29-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True

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