Every freeze is preceeded typically by the following sylsog entry. It is a gst_discoverer_discover call (one of several hundred recorded immediately before every freeze) as an example:

Oct 20 19:35:54 david-1510 gnome-session[1552]: (tracker-extract:1803): Tracker-WARNING **: Call to gst_discoverer_discover_uri(file:///home/david/Downloads/**linux-rpi-4.1.y**/arch/arm/boot/dts/overlays/hifiberry-dacplus-overlay.dts) failed: Ressource nicht gefunden.

(last few words translate to Resource not found in English)

Some of the calls are mystifying, like the call to linux-rpi-4.1.y. This was part of a firmware package for my Raspberry Pi a couple of days ago that I had downloaded on my Ubuntu 15.10 system and SCP'ed over the LAN to my Raspberry.

I would appreciate any help with the following:

  1. What is doing the calling?

  2. How has Raspberry Pi firmware "contaminated" my Ubuntu system?

  3. How can I recover?

  • 1
    Please note that 15.10 is not supported here on AskUbuntu.com yet until it will be officially released in a few days.
    – Byte Commander
    Oct 20, 2015 at 18:23
  • 3
    Now 15.10 is on-topic, since officially released :)
    – Ravan
    Oct 30, 2015 at 14:53
  • my freezes are still happening every 10-15 minutes under 15.10, unless I do not move the mouse while using a browser (had fails under Chrome and Firefix, so not browser-specific). I have collected the /var/log/syslog entries prior to over 10 freezes & the only thing remotely common is "vector smash protection enabled" - example below Nov 2, 2015 at 16:28
  • Nov 2 17:10:23 david-1510 firefox.desktop[1979]: Vector smash protection is enabled. Nov 2, 2015 at 16:36
  • 1
    I have no freezes with kernel, but with later I have them - every 10 minutes
    – Extender
    Nov 9, 2015 at 3:14


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