什么命令会改变我的屏幕亮度？
我正在尝试重新绑定我的一些function键，因为我从来没有将它们用于多媒体目的，但是我不确定我需要用什么命令来增加/降低亮度，我说话尝试创建自己的自定义快捷方式时，请参阅下面的命令：
是否有标准的终端command来降低亮度（并增加亮度）？ 理想情况下，通过设定的百分比（例如10％），或者我需要从硬件中找到的设定值减少。
作为额外信息，我可以通过按Fn + F7和Fn + F8分别减小和增加来控制亮度，但我希望能够简单地按下F7和F8 。 如果它发生任何变化，我也会使用Ubuntu 12.04和Unity。
根据以下iSeth的要求，输出xmodmap -pke | less xmodmap -pke | less （键盘代码66-77是function按钮，为大屏幕终端输出道歉）：
keycode 8 = keycode 9 = Escape NoSymbol Escape keycode 10 = 1 exclam 1 exclam onesuperior exclamdown onesuperior keycode 11 = 2 quotedbl 2 quotedbl twosuperior oneeighth twosuperior keycode 12 = 3 sterling 3 sterling threesuperior sterling threesuperior keycode 13 = 4 dollar 4 dollar EuroSign onequarter EuroSign keycode 14 = 5 percent 5 percent onehalf threeeighths onehalf keycode 15 = 6 asciicircum 6 asciicircum threequarters fiveeighths threequarters keycode 16 = 7 ampersand 7 ampersand braceleft seveneighths braceleft keycode 17 = 8 asterisk 8 asterisk bracketleft trademark bracketleft keycode 18 = 9 parenleft 9 parenleft bracketright plusminus bracketright keycode 19 = 0 parenright 0 parenright braceright degree braceright keycode 20 = minus underscore minus underscore backslash questiondown backslash keycode 21 = equal plus equal plus dead_cedilla dead_ogonek dead_cedilla keycode 22 = BackSpace BackSpace BackSpace BackSpace keycode 23 = Tab ISO_Left_Tab Tab ISO_Left_Tab keycode 24 = q Q q Q at Greek_OMEGA at keycode 25 = w W w W lstroke Lstroke lstroke keycode 26 = e E e E e E e keycode 27 = r R r R paragraph registered paragraph keycode 28 = t T t T tslash Tslash tslash keycode 29 = y Y y Y leftarrow yen leftarrow keycode 30 = u U u U downarrow uparrow downarrow keycode 31 = i I i I rightarrow idotless rightarrow keycode 32 = o O o O oslash Oslash oslash keycode 33 = p P p P thorn THORN thorn keycode 34 = bracketleft braceleft bracketleft braceleft dead_diaeresis dead_abovering dead_diaeresis keycode 35 = bracketright braceright bracketright braceright dead_tilde dead_macron dead_tilde keycode 36 = Return NoSymbol Return keycode 37 = Control_L NoSymbol Control_L keycode 38 = a A a A ae AE ae keycode 39 = s S s S ssharp section ssharp keycode 40 = d D d D eth ETH eth keycode 41 = f F f F dstroke ordfeminine dstroke keycode 42 = g G g G eng ENG eng keycode 43 = h H h H hstroke Hstroke hstroke keycode 44 = j J j J dead_hook dead_horn dead_hook keycode 45 = k K k K kra ampersand kra keycode 46 = l L l L lstroke Lstroke lstroke keycode 47 = semicolon colon semicolon colon dead_acute dead_doubleacute dead_acute keycode 48 = apostrophe at apostrophe at dead_circumflex dead_caron dead_circumflex keycode 49 = grave notsign grave notsign bar bar bar keycode 50 = Shift_L NoSymbol Shift_L keycode 51 = numbersign asciitilde numbersign asciitilde dead_grave dead_brevedead_grave keycode 52 = z Z z Z guillemotleft less guillemotleft keycode 53 = x X x X guillemotright greater guillemotright keycode 54 = c C c C cent copyright cent keycode 55 = v V v V leftdoublequotemark leftsinglequotemark leftdoublequotemark keycode 56 = b B b B rightdoublequotemark rightsinglequotemark rightdoublequotemark keycode 57 = n N n N n N n keycode 58 = m M m M mu masculine mu keycode 59 = comma less comma less horizconnector multiply horizconnector keycode 60 = period greater period greater periodcentered division periodcentered keycode 61 = slash question slash question dead_belowdot dead_abovedot dead_belowdot keycode 62 = Shift_R NoSymbol Shift_R keycode 63 = KP_Multiply KP_Multiply KP_Multiply KP_Multiply KP_Multiply KP_Multiply XF86ClearGrab keycode 64 = Alt_L Meta_L Alt_L Meta_L keycode 65 = space NoSymbol space keycode 66 = Caps_Lock NoSymbol Caps_Lock keycode 67 = F1 F1 F1 F1 F1 F1 XF86Switch_VT_1 keycode 68 = F2 F2 F2 F2 F2 F2 XF86Switch_VT_2 keycode 69 = F3 F3 F3 F3 F3 F3 XF86Switch_VT_3 keycode 70 = F4 F4 F4 F4 F4 F4 XF86Switch_VT_4 keycode 71 = F5 F5 F5 F5 F5 F5 XF86Switch_VT_5 keycode 72 = F6 F6 F6 F6 F6 F6 XF86Switch_VT_6 keycode 73 = F7 F7 F7 F7 F7 F7 XF86Switch_VT_7 keycode 74 = F8 F8 F8 F8 F8 F8 XF86Switch_VT_8 keycode 75 = F9 F9 F9 F9 F9 F9 XF86Switch_VT_9 keycode 76 = F10 F10 F10 F10 F10 F10 XF86Switch_VT_10 keycode 77 = Num_Lock NoSymbol Num_Lock keycode 78 = Scroll_Lock NoSymbol Scroll_Lock keycode 79 = KP_Home KP_7 KP_Home KP_7 keycode 80 = KP_Up KP_8 KP_Up KP_8 keycode 81 = KP_Prior KP_9 KP_Prior KP_9 keycode 82 = KP_Subtract KP_Subtract KP_Subtract KP_Subtract KP_Subtract KP_Subtract XF86Prev_VMode keycode 83 = KP_Left KP_4 KP_Left KP_4 keycode 84 = KP_Begin KP_5 KP_Begin KP_5 keycode 85 = KP_Right KP_6 KP_Right KP_6 keycode 86 = KP_Add KP_Add KP_Add KP_Add KP_Add KP_Add XF86Next_VMode keycode 87 = KP_End KP_1 KP_End KP_1 keycode 88 = KP_Down KP_2 KP_Down KP_2 keycode 89 = KP_Next KP_3 KP_Next KP_3 keycode 90 = KP_Insert KP_0 KP_Insert KP_0 keycode 91 = KP_Delete KP_Decimal KP_Delete KP_Decimal keycode 92 = ISO_Level3_Shift NoSymbol ISO_Level3_Shift keycode 93 = keycode 94 = backslash bar backslash bar bar brokenbar bar keycode 95 = F11 F11 F11 F11 F11 F11 XF86Switch_VT_11 keycode 96 = F12 F12 F12 F12 F12 F12 XF86Switch_VT_12 keycode 97 = keycode 98 = Katakana NoSymbol Katakana keycode 99 = Hiragana NoSymbol Hiragana keycode 100 = Henkan_Mode NoSymbol Henkan_Mode keycode 101 = Hiragana_Katakana NoSymbol Hiragana_Katakana keycode 102 = Muhenkan NoSymbol Muhenkan keycode 103 = keycode 104 = KP_Enter NoSymbol KP_Enter keycode 105 = Control_R NoSymbol Control_R keycode 106 = KP_Divide KP_Divide KP_Divide KP_Divide KP_Divide KP_Divide XF86Ungrab keycode 107 = Print Sys_Req Print Sys_Req keycode 108 = ISO_Level3_Shift Multi_key ISO_Level3_Shift Multi_key keycode 109 = Linefeed NoSymbol Linefeed keycode 110 = Home NoSymbol Home keycode 111 = Up NoSymbol Up keycode 112 = Prior NoSymbol Prior keycode 113 = Left NoSymbol Left keycode 114 = Right NoSymbol Right keycode 115 = End NoSymbol End keycode 116 = Down NoSymbol Down keycode 117 = Next NoSymbol Next keycode 118 = Insert NoSymbol Insert keycode 119 = Delete NoSymbol Delete keycode 120 = keycode 121 = XF86AudioMute NoSymbol XF86AudioMute keycode 122 = XF86AudioLowerVolume NoSymbol XF86AudioLowerVolume keycode 123 = XF86AudioRaiseVolume NoSymbol XF86AudioRaiseVolume keycode 124 = XF86PowerOff NoSymbol XF86PowerOff keycode 125 = KP_Equal NoSymbol KP_Equal keycode 126 = plusminus NoSymbol plusminus keycode 127 = Pause Break Pause Break keycode 128 = XF86LaunchA NoSymbol XF86LaunchA keycode 129 = KP_Decimal KP_Decimal KP_Decimal KP_Decimal keycode 130 = Hangul NoSymbol Hangul keycode 131 = Hangul_Hanja NoSymbol Hangul_Hanja keycode 132 = keycode 133 = Super_L NoSymbol Super_L keycode 134 = Super_R NoSymbol Super_R keycode 135 = Menu NoSymbol Menu keycode 136 = Cancel NoSymbol Cancel keycode 137 = Redo NoSymbol Redo keycode 138 = SunProps NoSymbol SunProps keycode 139 = Undo NoSymbol Undo keycode 140 = SunFront NoSymbol SunFront keycode 141 = XF86Copy NoSymbol XF86Copy keycode 142 = SunOpen NoSymbol SunOpen keycode 143 = XF86Paste NoSymbol XF86Paste keycode 144 = Find NoSymbol Find keycode 145 = XF86Cut NoSymbol XF86Cut keycode 146 = Help NoSymbol Help keycode 147 = XF86MenuKB NoSymbol XF86MenuKB keycode 148 = XF86Calculator NoSymbol XF86Calculator keycode 149 = keycode 150 = XF86Sleep NoSymbol XF86Sleep keycode 151 = XF86WakeUp NoSymbol XF86WakeUp keycode 152 = XF86Explorer NoSymbol XF86Explorer keycode 153 = XF86Send NoSymbol XF86Send keycode 154 = keycode 155 = XF86Xfer NoSymbol XF86Xfer keycode 156 = XF86Launch1 NoSymbol XF86Launch1 keycode 157 = XF86Launch2 NoSymbol XF86Launch2 keycode 158 = XF86WWW NoSymbol XF86WWW keycode 159 = XF86DOS NoSymbol XF86DOS keycode 160 = XF86ScreenSaver NoSymbol XF86ScreenSaver keycode 161 = keycode 162 = XF86RotateWindows NoSymbol XF86RotateWindows keycode 163 = XF86Mail NoSymbol XF86Mail keycode 164 = XF86Favorites NoSymbol XF86Favorites keycode 165 = XF86MyComputer NoSymbol XF86MyComputer keycode 166 = XF86Back NoSymbol XF86Back keycode 167 = XF86Forward NoSymbol XF86Forward keycode 168 = keycode 169 = XF86Eject NoSymbol XF86Eject keycode 170 = XF86Eject XF86Eject XF86Eject XF86Eject keycode 171 = XF86AudioNext NoSymbol XF86AudioNext keycode 172 = XF86AudioPlay XF86AudioPause XF86AudioPlay XF86AudioPause keycode 173 = XF86AudioPrev NoSymbol XF86AudioPrev keycode 174 = XF86AudioStop XF86Eject XF86AudioStop XF86Eject keycode 175 = XF86AudioRecord NoSymbol XF86AudioRecord keycode 176 = XF86AudioRewind NoSymbol XF86AudioRewind keycode 177 = XF86Phone NoSymbol XF86Phone keycode 178 = keycode 179 = XF86Tools NoSymbol XF86Tools keycode 180 = XF86HomePage NoSymbol XF86HomePage keycode 181 = XF86Reload NoSymbol XF86Reload keycode 182 = XF86Close NoSymbol XF86Close keycode 183 = keycode 184 = keycode 185 = XF86ScrollUp NoSymbol XF86ScrollUp keycode 186 = XF86ScrollDown NoSymbol XF86ScrollDown keycode 187 = parenleft NoSymbol parenleft keycode 188 = parenright NoSymbol parenright keycode 189 = XF86New NoSymbol XF86New keycode 190 = Redo NoSymbol Redo keycode 191 = XF86Tools NoSymbol XF86Tools keycode 192 = XF86Launch5 NoSymbol XF86Launch5 keycode 193 = XF86Launch6 NoSymbol XF86Launch6 keycode 194 = XF86Launch7 NoSymbol XF86Launch7 keycode 195 = XF86Launch8 NoSymbol XF86Launch8 keycode 196 = XF86Launch9 NoSymbol XF86Launch9 keycode 197 = keycode 198 = keycode 199 = XF86TouchpadToggle NoSymbol XF86TouchpadToggle keycode 200 = XF86TouchpadOn NoSymbol XF86TouchpadOn keycode 201 = XF86TouchpadOff NoSymbol XF86TouchpadOff keycode 202 = keycode 203 = Mode_switch NoSymbol Mode_switch keycode 204 = NoSymbol Alt_L NoSymbol Alt_L keycode 205 = NoSymbol Meta_L NoSymbol Meta_L keycode 206 = NoSymbol Super_L NoSymbol Super_L keycode 207 = NoSymbol Hyper_L NoSymbol Hyper_L keycode 208 = XF86AudioPlay NoSymbol XF86AudioPlay keycode 209 = XF86AudioPause NoSymbol XF86AudioPause keycode 210 = XF86Launch3 NoSymbol XF86Launch3 keycode 211 = XF86Launch4 NoSymbol XF86Launch4 keycode 212 = XF86LaunchB NoSymbol XF86LaunchB keycode 213 = XF86Suspend NoSymbol XF86Suspend keycode 214 = XF86Close NoSymbol XF86Close keycode 215 = XF86AudioPlay NoSymbol XF86AudioPlay keycode 216 = XF86AudioForward NoSymbol XF86AudioForward keycode 217 = keycode 218 = Print NoSymbol Print keycode 219 = keycode 220 = XF86WebCam NoSymbol XF86WebCam keycode 221 = keycode 222 = keycode 223 = XF86Mail NoSymbol XF86Mail keycode 224 = XF86Messenger NoSymbol XF86Messenger keycode 225 = XF86Search NoSymbol XF86Search keycode 226 = XF86Go NoSymbol XF86Go keycode 227 = XF86Finance NoSymbol XF86Finance keycode 228 = XF86Game NoSymbol XF86Game keycode 229 = XF86Shop NoSymbol XF86Shop keycode 230 = keycode 231 = Cancel NoSymbol Cancel keycode 232 = XF86MonBrightnessDown NoSymbol XF86MonBrightnessDown keycode 233 = XF86MonBrightnessUp NoSymbol XF86MonBrightnessUp keycode 234 = XF86AudioMedia NoSymbol XF86AudioMedia keycode 235 = XF86Display NoSymbol XF86Display keycode 236 = XF86KbdLightOnOff NoSymbol XF86KbdLightOnOff keycode 237 = XF86KbdBrightnessDown NoSymbol XF86KbdBrightnessDown keycode 238 = XF86KbdBrightnessUp NoSymbol XF86KbdBrightnessUp keycode 239 = XF86Send NoSymbol XF86Send keycode 240 = XF86Reply NoSymbol XF86Reply keycode 241 = XF86MailForward NoSymbol XF86MailForward keycode 242 = XF86Save NoSymbol XF86Save keycode 243 = XF86Documents NoSymbol XF86Documents keycode 244 = XF86Battery NoSymbol XF86Battery keycode 245 = XF86Bluetooth NoSymbol XF86Bluetooth keycode 246 = XF86WLAN NoSymbol XF86WLAN keycode 247 = keycode 248 = keycode 249 = keycode 250 = keycode 251 = keycode 252 = keycode 253 = keycode 254 = keycode 255 =
编辑：偶然发现一个相关的问题，并认为“如何通过终端改变亮度？”的解决方案之一。 可以使用我的笔记本电脑，但没有一个，我正在运行HP Pavilion DV6000，我忘了提及我更喜欢能够运行命令，如果可能的话，无需root访问。
至于使用xdotool，它会改变所述亮度：
但屏幕保持当前亮度，因此在我的情况下不会影响与亮度相关的硬件。
如果xbacklight失败并且键盘快捷键（例如： fn + F4 ）改变亮度，则后续方法应该有效。
dbus方式
dbus-send --session --print-reply --dest="org.gnome.SettingsDaemon" /org/gnome/SettingsDaemon/Power org.gnome.SettingsDaemon.Power.Screen.SetPercentage uint32:`percentage`
例如：将亮度设置为30％
dbus-send --session --print-reply --dest="org.gnome.SettingsDaemon" /org/gnome/SettingsDaemon/Power org.gnome.SettingsDaemon.Power.Screen.SetPercentage uint32:30
如果它如下所示，您的操作系统可能太旧了。 然后使用xdotool
错误org.freedesktop.DBus.Error.UnknownMethod：接口“org.gnome.SettingsDaemon.Power.Screen”上带有签名“u”的方法“SetPercentage”不存在
xdotool
BrightnessUp： xdotool key XF86MonBrightnessUp
BrightnessDown： xdotool key XF86MonBrightnessDown
您可以使用xbacklight工具，它不需要root权限：
xbacklight +30% # increases brightness by 30 percent xbacklight -30% # decreases brightness by 30 percent
有关所有可用选项，请参阅man xbacklight 。 当然，如果你没有xbacklight你需要安装它：
sudo apt-get update && sudo apt-get install xbacklight
你必须使用超级用户权限，在我的系统上它拒绝授予对sudo访问权限所以我通过首先通过运行sudo su将用户更改为su然后执行这些命令来完成它。
要找出屏幕运行的最大亮度级别：
cat /sys/class/backlight/acpi_video0/max_brightness
那应该打印7或者你的情况，这是你可以增加亮度的最高级别，现在改变亮度运行
echo "5" >> /sys/class/backlight/acpi_video0/brightness
基本上从1-7改变"5"将增加或减少亮度。
注意 ：对于那些获得No Such File或目录执行上述命令的人，将使用其他可用选项替换acpi_video0。 要获取所有可用的列表，请尝试以下命令：
ls /sys/class/backlight/
然后尝试使用ls获得的echo和cat命令
测试它
在主目录中创建一个名为.xmodmap的文件： touch .xmodmap
然后打开文件以编辑内容： gedit .xmodmap
添加以下行：
!Make the F7 key brightness down keycode 73 = XF86MonBrightnessDown NoSymbol XF86MonBrightnessDown !Make the F8 key brightness up keycode 74 = XF86MonBrightnessUp NoSymbol XF86MonBrightnessUp
保存文件，然后运行xmodmap .xmodmap 。 如果键现在可以执行您想要的操作，请继续。 如果没有从您的家中删除.xmodmap文件。
继续
从破折号打开启动应用程序。 单击“添加”。 将xmodmap .xmodmap放在命令字段中。 其他字段是可选的，您可以将它们留空。 再次单击“添加”。 这使得Xmodmap在启动时运行。
有一个亮度指示器可以下载http://codevanrohde.nl/wordpress/?p=128 。 这是我发现的唯一可以在笔记本电脑上使用的解决方案。 有了它，您可以设置热键来控制亮度，使用鼠标滚轮或从指示器的下拉列表中选择。 我已经用’Win + Alt’取代了’Fn’，这对我来说非常相似，现在我也可以用外接键盘！
要添加PPA并安装：
sudo add-apt-repository ppa:indicator-brightness/ppa sudo apt-get update && sudo apt-get install indicator-brightness
热键应分配给：
/opt/extras.ubuntu.com/indicator-brightness/indicator-brightness-adjust --up
和
/opt/extras.ubuntu.com/indicator-brightness/indicator-brightness-adjust --down