tracker-extract seem to eat my CPU via Xorg !?

[Joseph Maillardet]

Hello,

I receive a new HP laptop and since I've installed him with ubuntu-gnome I encounter a rare problem. Each time I cold start or reboot the system, after something like one minute, the fans go crazy and my mouse move very hardly on the screen for about 4/5 minutes. After what ... everything run smooth.

top and htop show me that 4 process eat the CPU : Xorg (80/100%) and tracker (tracker-store 100/130%, tracker-miner-fs 15/20% and tracker-extract 5/35%).

My / is a single SSD, my /home is a raid 0 of two classic hard drive. iotop say that no one is overcharged. Just 5 to 10% of "IO" is in use.

I didn't understand why tracker, who run in background, have influence on Xorg. But when the system hang, if I put a
$ tracker daemon -k all
in a terminal, everything go back to normal, instantly.

help will be appreciate.
JM.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: tracker-extract 1.4.1-1ubuntu3.1~wily1 [origin: LP-PPA-gnome3-team-gnome3]
ProcVersionSignature: Ubuntu 4.2.0-34.39-generic 4.2.8-ckt4
Uname: Linux 4.2.0-34-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CurrentDesktop: GNOME
Date: Tue Mar 22 09:17:45 2016
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: tracker
UpgradeStatus: No upgrade log present (probably fresh install)