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Bug#898021: linux-image-4.16.0-1-amd64: kernel 4.16 infinite wait after dm login on ivy bridge and bay trail

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I'm seeing this on a few laptops with SSD's.

The behaviour is that if the device isn't interacted with in any way, the
machines hang for 2-4 mins at boot.

Seems to be related to the fix for CVE-2018-1108 - random: fix crng_ready()
test

https://security-tracker.debian.org/tracker/CVE-2018-1108

Pedro & Sten, can you try introducing entropy into the systems affected
when they appear to hang, to see if this reduces the delays?

eg: moving the mouse, tapping shift/ctrl/alt keys, pinging the device on
the network if network is already up, etc?

I suspect this bug can be merged with 897599, 897632 and 897917.

-- 
Stuart Young (aka Cefiar)

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Bug#898021: linux-image-4.16.0-1-amd64: kernel 4.16 infinite wait after dm login on ivy bridge and bay trail Pedro MGP <mgondium@gmail.com> - 2018-05-06 02:40 +0200
  Bug#898021: linux-image-4.16.0-1-amd64: kernel 4.16 infinite wait after dm login on ivy bridge and bay trail Sten Heinze <shze@gmx.de> - 2018-05-06 05:50 +0200
  Bug#898021: linux-image-4.16.0-1-amd64: kernel 4.16 infinite wait after dm login on ivy bridge and bay trail Stuart Young <cefiar@gmail.com> - 2018-05-06 07:30 +0200
  Bug#898021: linux-image-4.16.0-1-amd64: kernel 4.16 infinite wait after dm login on ivy bridge and bay trail Pedro MG Palmeiro <mgondium@gmail.com> - 2018-05-06 18:50 +0200
  Bug#898021: linux-image-4.16.0-1-amd64: kernel 4.16 infinite wait after dm login on ivy bridge and bay trail "Sten Heinze" <shze@gmx.de> - 2018-05-07 06:50 +0200
    Bug#898021: linux-image-4.16.0-1-amd64: kernel 4.16 infinite wait after dm login on ivy bridge and bay trail Vincas Dargis <vindrg@gmail.com> - 2018-07-19 18:50 +0200
  Bug#898021: linux-image-4.16.0-1-amd64: kernel 4.16 infinite wait after dm login on ivy bridge and bay trail Stuart Young <cefiar@gmail.com> - 2018-05-10 08:10 +0200
  Bug#898021: linux-image-4.16.0-1-amd64: kernel 4.16 infinite wait after dm login on ivy bridge and bay trail Holger Schröder <Holgi.HSP@gmx.de> - 2018-05-17 18:30 +0200
    Bug#898021: linux-image-4.16.0-1-amd64: kernel 4.16 infinite wait after dm login on ivy bridge and bay trail Ben Hutchings <ben@decadent.org.uk> - 2018-05-20 16:40 +0200
      Bug#898021: linux-image-4.16.0-1-amd64: kernel 4.16 infinite wait after dm login on ivy bridge and bay trail Holger Schröder <Holgi.HSP@gmx.de> - 2018-05-20 22:10 +0200
      Bug#898021: linux-image-4.16.0-1-amd64: kernel 4.16 infinite wait after dm login on ivy bridge and bay trail Holger Schröder <Holgi.HSP@gmx.de> - 2018-06-03 16:40 +0200
  Bug#898021: linux-image-4.16.0-1-amd64: kernel 4.16 infinite wait after dm login on ivy bridge and bay trail "Chris Nospam" <chris21k@gmx.de> - 2018-06-08 19:00 +0200
  Bug#898021: (no subject) "Sten Heinze" <shze@gmx.de> - 2018-06-09 17:20 +0200

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