Disabling PPT also works around the issue for me on my Dell laptop.
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Title:
grub wrongly booting via bios entry point instead of efi when
REF: Blank Screen after upgrading grub:
I confirm that my problem solved by disabling PPT in Dell Bios ->
Security settings tab. (https://askubuntu.com/a/1229927/597140)
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I have a bootable Ubuntu 20.04 LTS USB disk however I am unable to boot
from it to install Ubuntu due to this bug, the screen remains blank
after I click Enter on the Grub page to boot. Any workarounds?
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This also broke my Dell Inspiron 7567, running Ubuntu 19.10 and the
default kernel from the repos for 5.3.0-46-generic. Based on some other
workarounds listed, I tried switching to PARTUUID but that still doesn't
work. They system just hangs after 'Loading initial ramdisk ...'
I have secure boot
@Mos you should not put grub on hold, but fix your kernels to set
CONFIG_EFI_STUB=y
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Title:
grub wrongly booting via bios entry point instead of
2.04-1ubuntu12.2 also broke ubuntu on my dell inspiron 7567 laptop
I had to reinstall ubuntu due to this package upgrade, and have
currently blocked grub* package updates until this new issue caused by
the bugfix is resolved.
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2.04-1ubuntu12.2 broke boot on my machine. It doesn't work with kernels
that don't have CONFIG_EFI_STUB=y configured. This really needs to fall
back to the old mode if EFI handover is not supported by the kernel.
Also, after using a kernel with CONFIG_EFI_STUB=y it still failed to
boot one of my
This bug was fixed in the package grub2 - 2.02-2ubuntu8.15
---
grub2 (2.02-2ubuntu8.15) bionic; urgency=medium
* Make the linux command in EFI grub always try EFI handover; thanks
to Chris Coulson for the patches (LP: #1864533)
-- Julian Andres Klode Wed, 11 Mar 2020
This bug was fixed in the package grub2 - 2.04-1ubuntu12.2
---
grub2 (2.04-1ubuntu12.2) eoan; urgency=medium
* Make the linux command in EFI grub always try EFI handover; thanks
to Chris Coulson for the patches (LP: #1864533)
-- Julian Andres Klode Thu, 12 Mar 2020 17:40:25
same for eoan, ubuntu12.1 -> ubuntu12.2
type/version before: 114/2 and 6/38
type/version after: 6/38 and 6/38
before, enabled: "Secure boot enabled"
before, disabled: "Secure boot could not be determined (mode 0)"
after, disabled: "Secure boot disabled"
after, enabled: "Secure boot enabled"
**
to 8.15 of course ...
** Tags removed: verification-needed-bionic
** Tags added: verification-done-bionic
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Title:
grub wrongly booting via bios
bionic:
I upgraded from ubuntu8.14 to ubuntu8.14.
type/version before: 114/2 and 6/38
type/version after: 6/38 and 6/38
Looking at dmesg:
before, enabled: "Secure boot enabled"
before, disabled: "Secure boot could not be determined (mode 0)"
after, enabled: "Secure boot enabled"
after,
** Tags added: id-5e6a862ec339fd8702484ff4
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Title:
grub wrongly booting via bios entry point instead of efi when
secureboot disabled
To
This bug was fixed in the package grub2 - 2.04-1ubuntu22
---
grub2 (2.04-1ubuntu22) focal; urgency=medium
* smbios: Add a --linux argument to apply linux modalias-like filtering
* Make the linux command in EFI grub always try EFI handover; thanks
to Chris Coulson for the
** Tags added: id-5e5426bcb01c166f228a5923
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Title:
grub wrongly booting via bios entry point instead of efi when
secureboot disabled
To
Hello Steve, or anyone else affected,
Accepted grub2 into eoan-proposed. The package will build now and be
available at https://launchpad.net/ubuntu/+source/grub2/2.04-1ubuntu12.2
in a few hours, and then in the -proposed repository.
Please help us by testing this new package. See
** Description changed:
[SRU Justification]
Currently, the Ubuntu patches for secureboot support will boot the kernel via
the EFI stub ONLY if secureboot is enabled. This means that if secureboot is
disabled, grub wrongly skips the kernel's EFI stub, resulting in buggy behavior
(missing
** Changed in: grub2 (Ubuntu Bionic)
Status: Confirmed => In Progress
** Changed in: grub2 (Ubuntu Focal)
Status: Confirmed => Fix Committed
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** Merge proposal linked:
https://code.launchpad.net/~juliank/grub/+git/ubuntu/+merge/380567
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Title:
grub wrongly booting via bios entry
** Merge proposal linked:
https://code.launchpad.net/~juliank/grub/+git/ubuntu/+merge/380566
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Title:
grub wrongly booting via bios entry
** Merge proposal linked:
https://code.launchpad.net/~juliank/grub/+git/ubuntu/+merge/380563
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Title:
grub wrongly booting via bios entry
** Changed in: grub2 (Ubuntu Focal)
Assignee: (unassigned) => Julian Andres Klode (juliank)
** Changed in: grub2 (Ubuntu Bionic)
Assignee: (unassigned) => Julian Andres Klode (juliank)
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: grub2 (Ubuntu Bionic)
Status: New => Confirmed
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: grub2 (Ubuntu)
Status: New => Confirmed
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Title:
** Description changed:
- Currently, the Ubuntu patches for secureboot support will boot the
- kernel via the EFI stub ONLY if secureboot is enabled. This means that
- if secureboot is disabled, grub wrongly skips the kernel's EFI stub,
- resulting in buggy behavior (missing EFI fixups; lack of
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