我想用 来控制我的显示器亮度ddcutil，这需要i2c-dev加载模块。
它不会自动加载，因此我按照ArchWiki 上的说明尝试使用 systemd 自动加载它。systemd-modules-load.service没有错误，但启动时未加载该模块。
# Not loaded\n[rcorre@midova ~]$ sudo ddcutil setvcp 10 10\nDisplay not found\n\n# But I\'ve got a file in modules-load.d\n[rcorre@midova ~]$ cat /etc/modules-load.d/i2c-dev\ni2c-dev\n\n# The logs have always been rotated on boot ...\n[rcorre@midova ~]$ sudo systemctl status systemd-modules-load\n\xe2\x97\x8f systemd-modules-load.service - Load Kernel Modules\n Loaded: loaded (/usr/lib/systemd/system/systemd-modules-load.service; static; vendor preset: disabled)\n Active: active (exited) since Thu 2019-09-05 06:51:35 EDT; 14min ago\n Docs: man:systemd-modules-load.service(8)\n man:modules-load.d(5)\n Main PID: …