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

[sudodus]

The current daily Ubuntu Desktop iso file

-rw------- 1 sudodus sudodus 2938152960 okt 13 06:25 groovy-desktop-
amd64.iso

$ sha256sum groovy-desktop-amd64.iso
a1ee702fd38036ac3b22a34657c94a9f1f7cb476bc13b4712ee34dad20499fc2  groovy-desktop-amd64.iso

$ md5sum groovy-desktop-amd64.iso
541b509f09d79da944275dc2eaeed137  groovy-desktop-amd64.iso

when cloned does *not* boot in my son's HP Elitebook 8560p (It boots in
the Lenovo V130).

-o-

I double-checked that the tweaked iso file, that worked yesterday
(according to comment #15) works also today. I cloned it again to the
same USB pendrive, that failed with the current daily Ubuntu iso file.
And it works in both the HP Elitebook 8560p and the Lenovo V130.

The working iso file was tweaked from

original=groovy-desktop-amd64_20201010_gpt.iso

which was pointing to the daily Ubuntu Desktop iso file dated
2020-10-10. I have saved that file now as a separate file (so that it
will not be overwritten at the next zsync). And I have verified that I
can create a drive from it via the tweak in comment #15.

Please notice that the option

-compliance no_emul_toc

may cause problems. Anyway, the tweak in comment #21 failed for me.

-o-

I also tested the tweak in comment #15 on the current Ubuntu Groovy iso
file. When cloned the USB drive fails to boot the Lenovo V130, maybe
because something is 'set twice'. There is not even any 'Linpus Lite'
boot option in the temporary menu. (It boots in the HP Elitebook 8560p.)

The output of gdisk is changed from

$ sudo gdisk groovy-desktop-amd64.iso
GPT fdisk (gdisk) version 1.0.3

Partition table scan:
  MBR: protective
  BSD: not present
  APM: not present
  GPT: present

Found valid GPT with protective MBR; using GPT.

to

$ sudo gdisk test_mbr.iso
GPT fdisk (gdisk) version 1.0.3

Partition table scan:
  MBR: MBR only
  BSD: not present
  APM: not present
  GPT: present

Found valid MBR and GPT. Which do you want to use?
 1 - MBR
 2 - GPT
 3 - Create blank GPT

-o-

@ Thomas,

Would it be useful for you, if I upload the modified iso file that works
both in the Lenovo V130 and in the HP Elitebook 8560p?

Or can you create such an iso file yourself and do the analysis of its
head end?

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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 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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