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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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My workarounds for this at the moment are to install tools that increase
the kernel entropy pool.

If not a virtual machine, and `grep -i -o -m 1 rdrand /proc/cpuinfo`
returns 'rdrand', then I install the 'rng-tools5' package which uses the
hardware rng in many cpu's to provide entropy to the kernel.

If that fails or if it's a virtual machine, then I install the 'haveged'
package.

Note: Neither of these are fixes. They're work-arounds for the current
issue that allow somewhat normal operation. eg; Some people have issues
around how random the hardware rng is in some machines.

PS: Have seen a number of people suffering this issue in #debian on
freenode, and also on #debian & #debian-next on oftc.


On 10 May 2018 at 15:43, <chris21k@trash-mail.com> wrote:

>
>
> I can reproduce the described delay behavior on a virtualized installation
> of testing using kvm after installing kernel 4.16.0-1-amd64. With
> 4.15.0-3-amd64 no problem.
>
> Chris
>
>
>


-- 
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 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

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