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grub: disable console blanking

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The console often contains very useful information in the event of a
hard crash, in such situations there's no ability to unblank the console
via keypress because the kernel won't handle the interrupt.

Since CoreOS is a server/cluster operating system, there won't generally
be monitors connected benefitting from a blanked console.  Disabling the
blanking altogether allows the frame buffer contents to always be
visible, even when the kernel can't handle keypresses.
This commit is contained in:
Vito Caputo 2015-11-11 15:22:12 -08:00
parent 9f0fb176fd
commit 0b9c8e5855
1 changed files with 1 additions and 1 deletions
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2
build_library/grub.cfg
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@ -77,7 +77,7 @@ else
fi
# Assemble the options applicable to all the kernels below
set linux_cmdline="rootflags=rw mount.usrflags=ro $linux_root $linux_console $first_boot $oem_id $linux_append"
set linux_cmdline="rootflags=rw mount.usrflags=ro consoleblank=0 $linux_root $linux_console $first_boot $oem_id $linux_append"
menuentry "CoreOS default" --id=coreos {
gptprio.next -d usr -u usr_uuid