GNU bug report logs - #30751
Fw: [Issue] GuixSD won't boot in UEFI mode

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Message #8 received at 30751 <at> debbugs.gnu.org (full text, mbox):

From: Danny Milosavljevic <dannym <at> scratchpost.org>
To: amar <radamar <at> protonmail.com>
Cc: 30751 <at> debbugs.gnu.org
Subject: Re: bug#30751: Fw: [Issue] GuixSD won't boot in UEFI mode
Date: Thu, 8 Mar 2018 21:13:51 +0100

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Hi,

thank you for the report!  This is definitely a problem.

It seems that the Linux kernel already started up so this is not a bootloader
problem but rather a problem with the Linux kernel.  There have been lots and
LOTS of amdgpudrmfb changes in the Linux kernel lately - but our GuixSD
release is pretty old.

There should be a new release soon - the 0.14.0 release is from Dec 2017 and
the Linux kernel from back then had some problem modesetting AMD cards.

See also https://apple.stackexchange.com/questions/211260/grub-2-error-fb-switching-to-radeondrmfb-from-efi-vga

As a workaround,

(1) Wait until the grub menu shows up
(2) Press e
(3) Go to the end of the line which says "linux"
(4) Add a space
(5) Add nomodeset
(6) Press F10

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