[Bug 869017] Re: Ubuntu server enables screenblanking, concealing crashdumps (DPMS is not used)

[Robie Basak]

Here's the change that was made: https://git.launchpad.net/~ubuntu-
kernel/ubuntu/+source/linux/+git/zesty/commit/?id=a87ae50beda8c46c543b39e19070549cf355eb65

It's just the default of the consoleblank= kernel parameter. You can
override it by specifying that parameter to the kernel at boot time (eg.
via /etc/default/grub)

If someone could test and document exact steps to do this override in
this bug please, that'd be useful to users and I'd appreciate it.

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https://bugs.launchpad.net/bugs/869017

Title:
  Ubuntu server enables screenblanking, concealing crashdumps (DPMS is
  not used)

Status in kbd package in Ubuntu:
  Invalid
Status in linux package in Ubuntu:
  Fix Released
Status in kbd source package in Zesty:
  Invalid
Status in linux source package in Zesty:
  Fix Released
Status in kbd package in Debian:
  Fix Released

Bug description:
  James Rice of Jump Networks noticed that there is a screen-blanker
  enabled on Ubuntu Server.

  James notes that this blanking is not enabling DPMS power saving
  (thereby negating any power-saving benefit), and is simply turning the
  screen content blank.   This means that the crash output is invisible
  which is unhelpful on a server (virtual or otherwise).

  Ideally the screen should (at a minimum) be turned on and unblanked at
  the point of an OOPs/crash being printed.

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