可以使用C更改屏幕亮度吗？

首先，请从以下列表中选择ubuntu pacakges，该工具可让您管理屏幕的亮度（提示：这取决于品牌）

nvidia-settings - Tool of configuring the NVIDIA graphics driversmartdimmer - Change LCD brightness on Geforce cardsarmada-backlight - adjust backlight of Compaq Armada laptops (E300, M500, M700)ddccontrol - a program to control monitor parameterseeepc-acpi-scripts - scripts to support suspend and hotkeys on the Asus Eee PC laptopfnfxd - ACPI and hotkey daemon for Toshiba laptopsgddccontrol - a program to control monitor parametersspicctrl - Sony Vaio controller program to set LCD backlight brightnesstpb - program to use the IBM ThinkPad(tm) special keysxfce4-power-manager - power manager for Xfce desktopxfce4-power-manager-plugins - power manager plugins for Xfce panelxvattr - Utility to change Xv attributes

选择之后，

sudo apt-get build-dep <pkgname>apt-get source --compile <pkgname>

应该让您走上正确的路