[Bug 1899308] Re: failure to boot groovy daily (again)

[Chris Guiver]

Ubuntu daily (2020-10-15) 
written to thumb-drive using `gnome disks`

First boot works on 
- hp dc7700 (c2d-e6320, 5gb, nvidia quadro nvs 290)

But subsequent reboots, even off & back on fail on same box and another box
- hp dc7700 (c2d-e6320, 5gb, nvidia quadro nvs 290)
- hp dc7900 (c2d-e8400, 4gb, intel 4 series integrated i915)
(see http://iso.qa.ubuntu.com/qatracker/milestones/413/builds/221768/testcases/1303/results/ for specifics of tests performed)


Thumb-drive was written again (2020-10-15) this time with my usual `dus` (mkusb), and it was tried first on 
- hp dc7900 (c2d-e8400, 4gb, intel 4 series integrated i915)
After initial boot, a second re-try on same box failed
- hp dc7900 (c2d-e8400, 4gb, intel 4 series integrated i915)

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https://bugs.launchpad.net/bugs/1899308

Title:
  failure to boot groovy daily  (again)

Status in Ubuntu CD Images:
  Fix Released
Status in casper package in Ubuntu:
  Triaged
Status in cd-boot-images-amd64 package in Ubuntu:
  Confirmed

Bug description:
  This is either a duplicate or return of
  - https://bugs.launchpad.net/ubuntu-cdimage/+bug/1883040
  - https://bugs.launchpad.net/ubuntu-cdimage/+bug/1886148

  Most probably "groovy daily won't boot anymore on some older BIOS
  boxes" or the 1883040 bug, as it's impacting only my older slow boxes
  (but it's also different).

  thumb-drive has been successfully used in QA live & install tests,
  however it won't boot on

  hp dc7700 (c2d-e6320, 5gb, nvidia quadro nvs 290)
  hp dc7900 (c2d-e8400, 4gb, intel 4 series integrated i915)

  The last timing issue also impacted d755-5 (older dell optiplex 755)
  when dc7700 was impacted, but that booted successfully this ISO.

  I see thumb-drive flash as it tries to boot, eventually it stops
  flashing, but no boot. At least 6 attempts made to boot, thumb-drive
  being tested on another 2x d755 boxes..

  (ISO written by mkusb/dus & gnome-disks [#11] is identical)

  ** Expected result

  It boots & is usable

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