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【CentOS7】画面の解像度の変更

Last updated at Posted at 2021-06-07

環境

  • 仮想マシンでCentOS7

手順

1./etc/default/grubの変更

vi /etc/default/grubで編集する
7行目のquietの後ろにvga=数値を入れる(例として792を入れいている)

変更前
1 GRUB_TIMEOUT=5
2 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
3 GRUB_DEFAULT=saved
4 GRUB_DISABLE_SUBMENU=true
5 GRUB_TERMINAL_OUTPUT="console"
6 GRUB_CMDLINE_LINUX="spectre_v2=retpoline rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet"
7 GRUB_DISABLE_RECOVERY="true"
変更後
1 GRUB_TIMEOUT=5
2 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
3 GRUB_DEFAULT=saved
4 GRUB_DISABLE_SUBMENU=true
5 GRUB_TERMINAL_OUTPUT="console"
6 GRUB_CMDLINE_LINUX="spectre_v2=retpoline rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet vga=792"
7 GRUB_DISABLE_RECOVERY="true"

※行数は:set numberで表示可能

数値の決め方

bit 640 x480 800 x600 1024 x768 1280 x1024 1400 x1050 1600 x1200
8 769 771 773 775 835 796
15 784 787 790 793 - 797
16 785 788 791 794 837 798
24 786 789 792 795 838 799
32 809 814 824 829 - 834

2.変更後に以下を実行する

# grub2-mkconfig -o /boot/grub2/grub.cfg
# reboot

参考サイト

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