dm001
(新手)
1
Debian 8 使用亮度键显示亮度条改变但实际亮度没有变
在/sys/class/backlight下只有intel_backlight这个文件夹快捷方式,注意:没有acpi_video之类的文件夹
/sys/class/backlight/intel_backlight中任何文件打开会报错:
打开文档失败.
映射 /sys/class/backlight/intel_backlight/bl_power’ /sys/class/backlight/intel_backlight/bl_power’ 失败:mmap() 失败:没有那个设备.
显卡驱动信息
00:02.0 VGA compatible controller [0300]: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09)
Subsystem: Lenovo Device [17aa:3904]
Kernel driver in use: i915
01:00.0 3D controller [0302]: NVIDIA Corporation GK208M [GeForce GT 740M] [10de:1292] (rev a1)
Subsystem: Lenovo Device [17aa:3904]
Kernel driver in use: nouveau
尝试过修改grub那个解决方法,进入桌面后调节亮度会瞬间变最暗,关机,在biosmenu菜单时调节亮度会从最暗变成最亮
sam
(sam)
4
帮不上忙,但是我的装完了就可以的,声音倒是费了些时间
sam
(sam)
7
安装laptop-mode-tools
所有设置请man laptop-mode.conf
.
查看这个文件:/etc/laptop-mode/conf.d/lcd-brightness.conf
,修改成这个样子:
CONTROL_BRIGHTNESS=1
BATT_BRIGHTNESS_COMMAND="echo 13"
LM_AC_BRIGHTNESS_COMMAND="echo 13"
NOLM_AC_BRIGHTNESS_COMMAND="echo 13"
BRIGHTNESS_OUTPUT="/sys/class/backlight/acpi_video0/brightness"
另外,你使用的显卡是什么?
如无效果,可以试试:BRIGHTNESS_OUTPUT="/sys/class/backlight/intel_backlight/brightness
,这个brightness的值是直接的亮度控制
dm001
(新手)
9
第一 我的是这样
CONTROL_BRIGHTNESS=0
Commands to execute to set the brightness on your LCD
BATT_BRIGHTNESS_COMMAND="echo [value]"
LM_AC_BRIGHTNESS_COMMAND="echo [value]"
NOLM_AC_BRIGHTNESS_COMMAND=“echo [value]“
BRIGHTNESS_OUTPUT=”/proc/acpi/video/VID/LCD/brightness”
第二 没有 /proc/acpi/video 这个目录
第三 更改 /etc/laptop-mode/conf.d/lcd-brightness.conf 后重启会恢复成原来样子