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[Tim <tim@xxxxxxxxxxxxxx>]

I never got a chance to test the mainline kernels however I have not had
any further issues with this, since updating to 4.4.0-2-generic kernel

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https://bugs.launchpad.net/bugs/1538404

Title:
  logitech wireless keyboard (K270) and trackball (M570) laggy with
  latest kernels

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Recently inputs from my logitech wireless keyboard and trackball,
  became very laggy, and dropping out at times.

  This is a regression since 4.3.0-2.11 works perfectly
  4.3.0-5.16 is really bad, with devices often dropping out completely or loosing all input for over 30secs at times
  4.3.0.7.8 seems better, but still very slow at times, sometimes is like typing 1 character per second or noticable lag on mouse input.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.3.0-7-generic 4.3.0-7.18
  ProcVersionSignature: Ubuntu 4.3.0-7.18-generic 4.3.3
  Uname: Linux 4.3.0-7-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.19.4-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  darkness   8233 F.... pulseaudio
   /dev/snd/controlC0:  darkness   8233 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Wed Jan 27 16:14:55 2016
  InstallationDate: Installed on 2012-09-23 (1221 days ago)
  InstallationMedia: Ubuntu GNOME Remix 12.10 "Quantal Quetzal" - Alpha amd64(20120922)
  MachineType: Gigabyte Technology Co., Ltd. P67A-UD3R-B3
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.3.0-7-generic root=UUID=71eeb904-068b-41c2-9d34-59365ca4c3ad ro quiet splash init=/lib/systemd/systemd nomdmonddf nomdmonisw
  RelatedPackageVersions:
   linux-restricted-modules-4.3.0-7-generic N/A
   linux-backports-modules-4.3.0-7-generic  N/A
   linux-firmware                           1.155
  RfKill:
   
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/21/2012
  dmi.bios.vendor: Award Software International, Inc.
  dmi.bios.version: F9
  dmi.board.name: P67A-UD3R-B3
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.board.version: x.x
  dmi.chassis.type: 3
  dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
  dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF9:bd03/21/2012:svnGigabyteTechnologyCo.,Ltd.:pnP67A-UD3R-B3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnP67A-UD3R-B3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
  dmi.product.name: P67A-UD3R-B3
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.

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