我是這個世界的新手。所以F5/F6功能鍵基本上不起作用。我嘗試了一些關於更改 grub 的線上解決方案，但沒有運氣。我發現 中沒有文件/sys/class/backlight/，intel_backlight本身沒有。
jing@jing-ThinkPad-E14-Gen-2:~$ sudo find /sys/ -type f -iname '*brightness*'
/sys/devices/platform/thinkpad_acpi/leds/platform::mute/brightness
/sys/devices/platform/thinkpad_acpi/leds/platform::mute/max_brightness
/sys/devices/platform/thinkpad_acpi/leds/tpacpi::thinklight/brightness
/sys/devices/platform/thinkpad_acpi/leds/tpacpi::thinklight/max_brightness
/sys/devices/platform/thinkpad_acpi/leds/tpacpi::power/brightness
/sys/devices/platform/thinkpad_acpi/leds/tpacpi::power/max_brightness
/sys/devices/platform/thinkpad_acpi/leds/tpacpi::standby/brightness
/sys/devices/platform/thinkpad_acpi/leds/tpacpi::standby/max_brightness
/sys/devices/platform/thinkpad_acpi/leds/tpacpi::thinkvantage/brightness
/sys/devices/platform/thinkpad_acpi/leds/tpacpi::thinkvantage/max_brightness
/sys/devices/platform/thinkpad_acpi/leds/tpacpi::kbd_backlight/brightness
/sys/devices/platform/thinkpad_acpi/leds/tpacpi::kbd_backlight/brightness_hw_changed
/sys/devices/platform/thinkpad_acpi/leds/tpacpi::kbd_backlight/max_brightness
/sys/devices/platform/thinkpad_acpi/leds/platform::micmute/brightness
/sys/devices/platform/thinkpad_acpi/leds/platform::micmute/max_brightness
/sys/devices/platform/i8042/serio0/input/input3/input3::numlock/brightness
/sys/devices/platform/i8042/serio0/input/input3/input3::numlock/max_brightness
/sys/devices/platform/i8042/serio0/input/input3/input3::capslock/brightness
/sys/devices/platform/i8042/serio0/input/input3/input3::capslock/max_brightness
/sys/devices/platform/i8042/serio0/input/input3/input3::scrolllock/brightness
/sys/devices/platform/i8042/serio0/input/input3/input3::scrolllock/max_brightness
/sys/devices/pci0000:00/0000:00:14.3/leds/phy0-led/brightness
/sys/devices/pci0000:00/0000:00:14.3/leds/phy0-led/max_brightness
/sys/module/video/parameters/hw_changes_brightness
/sys/module/video/parameters/brightness_switch_enabled
/sys/module/thinkpad_acpi/parameters/brightness_enable
/sys/module/thinkpad_acpi/parameters/brightness_mode
/sys/module/i915/parameters/invert_brightness
答案1
在找到合適的背光選項之前，您可以透過 調整伽瑪值xrandr。用於xrandr --query從第二行的第一個條目取得顯示器的名稱，例如eDP，然後透過設定亮度
xrandr --output eDP --bightness 0.5
數值從 0（“黑屏”）到 1（“正常”）再到 255（“為什麼要這樣做？”）
答案2
事實證明我需要更新核心（到5.8）才能識別圖形驅動程式。這樣就解決了問題。謝謝大家的建議。