iso-image: Force gfxmode

https://www.gnu.org/software/grub/manual/grub/html_node/gfxmode.html (cherry picked from commit f93f0e72e9ef423ed591951030f08cafd209e637)
2021-05-22 18:16:42 -04:00 · 2021-05-22 18:16:42 -04:00 · 8cb2ce0f52
parent 91afc72d9e
commit 8cb2ce0f52
1 changed files with 13 additions and 0 deletions
--- a/nixos/modules/installer/cd-dvd/iso-image.nix
+++ b/nixos/modules/installer/cd-dvd/iso-image.nix
@ -185,6 +185,19 @@ let
    insmod gfxterm
    insmod png
    set gfxpayload=keep
+    set gfxmode=${concatStringsSep "," [
+      # GRUB will use the first valid mode listed here.
+      # `auto` will sometimes choose the smallest valid mode it detects.
+      # So instead we'll list a lot of possibly valid modes :/
+      #"3840x2160"
+      #"2560x1440"
+      "1920x1080"
+      "1366x768"
+      "1280x720"
+      "1024x768"
+      "800x600"
+      "auto"
+    ]}

    # Fonts can be loaded?
    # (This font is assumed to always be provided as a fallback by NixOS)