linux: Enable fbcon deferred takeover when possible #88026
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This config value ensures that when booting through e.g. UEFI, the existing framebuffer contents stay put until the first character is printed. As the default NixOS stage-1 immediately outputs a welcome message on init, this does not impact it, but it will allow for a cleaner boot when configured as such.
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Further information about this feature: https://www.phoronix.com/scan.php?page=news_item&px=Linux-4.19-FBDEV-Defer-Console cc @NeQuissimus |
teto
approved these changes
May 17, 2020
flokli
approved these changes
May 18, 2020
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Motivation for this change
This config value ensures that when booting through e.g. UEFI, the
existing framebuffer contents stay put until the first character is
printed. As the default NixOS stage-1 immediately outputs a welcome
message on init, this does not impact it, but it will allow for a cleaner boot when
configured as such.
The kernels of other Linux distributions (e.g. Arch, Fedora) already compile with
this option enabled, too.
Things done
sandboxinnix.confon non-NixOS linux)nix-shell -p nixpkgs-review --run "nixpkgs-review wip"./result/bin/)nix path-info -Sbefore and after)