Can you try Trusty kernel (3.13)?

You can install it by this command:
$ sudo apt-get install --install-recommends linux-generic-lts-trusty

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  xc5000 driver/firmware intermittent failure

Status in linux package in Ubuntu:

Bug description:
  xc5000 driver fails to load intermittently in up-to-date 16.04

  On reboot, sometimes driver loads, sometimes it does not. Timing seems
  to be the issue

  I am attaching dmesg output from a successful and an unsuccessful

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-70-generic 4.4.0-70.91
  ProcVersionSignature: Ubuntu 4.4.0-70.91-generic 4.4.49
  Uname: Linux 4.4.0-70-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
   /dev/snd/controlC0:  a_herzog   1372 F.... pulseaudio
   /dev/snd/controlC2:  a_herzog   1372 F.... pulseaudio
   /dev/snd/controlC1:  a_herzog   1372 F.... pulseaudio
  CurrentDesktop: XFCE
  Date: Tue Mar 28 12:16:52 2017
  HibernationDevice: RESUME=UUID=4b66b4c4-fbb2-4948-b3d5-91af7705f20d
  InstallationDate: Installed on 2016-06-14 (286 days ago)
  InstallationMedia: Mythbuntu 16.04 LTS "Xenial Xerus" - Release amd64 
  MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-70-generic 
root=UUID=ec52f45a-20fb-4d15-aee5-5fef0c006149 ro quiet splash
   linux-restricted-modules-4.4.0-70-generic N/A
   linux-backports-modules-4.4.0-70-generic  N/A
   linux-firmware                            1.157.8
   0: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install) 10/12/2009
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 080015
  dmi.board.asset.tag: To Be Filled By O.E.M. To be filled by O.E.M.
  dmi.board.vendor: To be filled by O.E.M.
  dmi.board.version: To be filled by O.E.M.
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
dmi:bvnAmericanMegatrendsInc.:bvr080015:bd10/12/2009:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnTobefilledbyO.E.M.:rnTobefilledbyO.E.M.:rvrTobefilledbyO.E.M.:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: To Be Filled By O.E.M.
  dmi.product.version: To Be Filled By O.E.M.
  dmi.sys.vendor: To Be Filled By O.E.M.

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