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* bug#36865: Guix gc breaks grub
@ 2019-07-30 22:03 Xavier Montillet
  2019-07-31  9:21 ` Ricardo Wurmus
  0 siblings, 1 reply; 10+ messages in thread
From: Xavier Montillet @ 2019-07-30 22:03 UTC (permalink / raw)
  To: 36865

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*Symptoms*

After running guix gc, and rebooting, I got the following errors (which stay something like half a second on the screen):

error: no such device: /gnu/store/0fijjh7qw8ppsks0ba3q9m873ljhj797-grub-2.04/share/grub/unicode.pf2
error: file `/gnu/store/0fijjh7qw8ppsks0ba3q9m873ljhj797-grub-2.04/share/grub/unicode.pf2' not found.
error: no suitable video mode found.
error: no video mode activated.

I then get to the grub menu where I can pick which version of Guix I want to boot on, but all of them lead to getting stuck on the following text (with nothing moving after that for at least several minutes):

error: no suitable video mode found.
Booting in blind mod

*Fix
*

Fortunately nckx was on IRC and saved me by telling me to press C to get the grub command line when I got to the grub menu and run setup_gfxterm.

Running guix system reconfigure config.scm removed the need for setup_gfxterm for subsequent boots.

*Cause*

guix gc thinks that grub (and a lot of other stuff that it shouldn't think is dead) is dead, as shown by the following commands (given by nckx):


$ grep unicode /boot/grub/grub.cfg
search --file --set /gnu/store/0fijjh7qw8ppsks0ba3q9m873ljhj797-grub-2.04/share/grub/unicode.pf2
if loadfont /gnu/store/0fijjh7qw8ppsks0ba3q9m873ljhj797-grub-2.04/share/grub/unicode.pf2; then

$ guix gc --list-dead | grep 0fijjh7qw8ppsks0ba3q9m873ljhj797
finding garbage collector roots...
determining live/dead paths...
/gnu/store/0fijjh7qw8ppsks0ba3q9m873ljhj797-grub-2.04

I was also able to reproduce the bug by running guix gc and rebooting again.

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^ permalink raw reply	[flat|nested] 10+ messages in thread

end of thread, other threads:[~2019-08-26  8:20 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2019-07-30 22:03 bug#36865: Guix gc breaks grub Xavier Montillet
2019-07-31  9:21 ` Ricardo Wurmus
2019-07-31 21:05   ` Xavier Montillet
2019-07-31 21:25     ` Xavier Montillet
2019-08-23 12:31       ` Ludovic Courtès
2019-08-23 22:53         ` Xavier Montillet
2019-08-24 14:04           ` Ludovic Courtès
2019-08-24 15:07             ` Xavier Montillet
2019-08-24 17:42         ` Jakob L. Kreuze
2019-08-26  8:19           ` Ludovic Courtès

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