This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
xenial' to 'verification-done-xenial'. If the problem still exists,
change the tag 'verification-needed-xenial' to 'verification-failed-

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See for documentation how
to enable and use -proposed. Thank you!

** Tags added: verification-needed-xenial

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  Kernel 4.4.0-67 Defaults to ACPI-cpufreq rather than P-State - Dell
  Precision 5520

Status in linux package in Ubuntu:

Bug description:
  sudo cpupower frequency-info
  analyzing CPU 0:
    driver: acpi-cpufreq
    CPUs which run at the same hardware frequency: 0
    CPUs which need to have their frequency coordinated by software: 0
    maximum transition latency: 10.0 us.
    hardware limits: 800 MHz - 2.80 GHz
    available frequency steps: 2.80 GHz, 2.80 GHz, 2.70 GHz, 2.60 GHz, 2.40 
GHz, 2.30 GHz, 2.00 GHz, 1.90 GHz, 1.80 GHz, 1.70 GHz, 1.50 GHz, 1.40 GHz, 1.20 
GHz, 1.10 GHz, 900 MHz, 800 MHz
    available cpufreq governors: conservative, ondemand, userspace, powersave, 
    current policy: frequency should be within 800 MHz and 2.80 GHz.
                    The governor "ondemand" may decide which speed to use
                    within this range.
    current CPU frequency is 1.40 GHz (asserted by call to hardware).
    cpufreq stats: 2.80 GHz:3.03%, 2.80 GHz:0.01%, 2.70 GHz:0.27%, 2.60 
GHz:0.68%, 2.40 GHz:0.70%, 2.30 GHz:1.52%, 2.00 GHz:2.20%, 1.90 GHz:1.36%, 1.80 
GHz:1.80%, 1.70 GHz:3.38%, 1.50 GHz:3.78%, 1.40 GHz:5.64%, 1.20 GHz:7.07%, 1.10 
GHz:13.71%, 900 MHz:28.54%, 800 MHz:26.32%  (2921841)
    boost state support:
      Supported: yes
      Active: yes

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-67-generic 4.4.0-67.88
  ProcVersionSignature: Ubuntu 4.4.0-67.88-generic 4.4.49
  Uname: Linux 4.4.0-67-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
   /dev/snd/controlC0:  carl       3165 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Mon Mar 20 08:25:44 2017
   # This is a distribution channel descriptor
   # For more information see
  HibernationDevice: RESUME=UUID=65474558-ead3-4d66-85e5-b55f81978b88
  InstallationDate: Installed on 2017-03-09 (10 days ago)
  InstallationMedia: Ubuntu 16.04 "Xenial" - Build amd64 LIVE Binary 
   lo        no wireless extensions.
   wlp2s0    no wireless extensions.
  MachineType: Dell Inc. Precision 5520
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-67-generic.efi.signed 
root=UUID=d19efcb8-515b-494c-a236-ee0da23f2393 ro acpi_rev_override locale=C 
quiet splash vt.handoff=7
   linux-restricted-modules-4.4.0-67-generic N/A
   linux-backports-modules-4.4.0-67-generic  N/A
   linux-firmware                            1.157.8
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install) 01/18/2017
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.1.3 0X41RR
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 10
  dmi.chassis.vendor: Dell Inc.
dmi:bvnDellInc.:bvr1.1.3:bd01/18/2017:svnDellInc.:pnPrecision5520:pvr:rvnDellInc.:rn0X41RR:rvrA00:cvnDellInc.:ct10:cvr: Precision 5520
  dmi.sys.vendor: Dell Inc.

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