联想笔记本ubuntu16.04无法调节屏幕亮度,求助!
发表于 : 2016-10-07 19:39
显卡是intel HD3000驱动看硬件信息应该是正常了,但无法调节亮度,按快捷键有亮度调节栏,屏幕亮度无变化,眼睛不舒服
代码: 全选
ls /sys/class/backlight/
cat /sys/class/backlight/*/brightness
cat /sys/class/dmi/id/{sys_vendor,product_name}
lspci -knn | grep -iA2 "vga\|3d\|disp"
1.GNMOE3.0桌面环境vickycq 写了:1. 说明目前使用的桌面环境
2. 执行以下指令将结果全部复制贴上来代码: 全选
ls /sys/class/backlight/ cat /sys/class/backlight/*/brightness cat /sys/class/dmi/id/{sys_vendor,product_name} lspci -knn | grep -iA2 "vga\|3d\|disp"
gnome3 亮度设置易出现问题daman 写了:1.GNMOE3.0桌面环境
尝试向 /sys/class/backlight/acpi_video0/brightness 或 /sys/class/backlight/intel_backlight/brightness 中写入亮度数值看有无实际效果。例如daman 写了:8
3350
代码: 全选
echo 4 | sudo tee /sys/class/backlight/acpi_video0/brightness
echo 2000 | sudo tee /sys/class/backlight/intel_backlight/brightness
顺序测试下列各组内核参数。每行为一组,每次一组,不可叠加daman 写了:acpi_video0 intel_backlight
可以调节了,谢谢大神 ,爽vickycq 写了:gnome3 亮度设置易出现问题daman 写了:1.GNMOE3.0桌面环境
尝试向 /sys/class/backlight/acpi_video0/brightness 或 /sys/class/backlight/intel_backlight/brightness 中写入亮度数值看有无实际效果。例如daman 写了:8
3350代码: 全选
echo 4 | sudo tee /sys/class/backlight/acpi_video0/brightness echo 2000 | sudo tee /sys/class/backlight/intel_backlight/brightness
顺序测试下列各组内核参数。每行为一组,每次一组,不可叠加daman 写了:acpi_video0 intel_backlight
acpi_backlight=vendor
acpi_osi=Linux
acpi_backlight=vendor acpi_osi=Linux
acpi_backlight=video
acpi_backlight=native
acpi_backlight=none
===============
附增加内核参数方法
===============
1 - 临时增加
开机到 GRUB 界面时,按 e 进入编辑界面
在 'linux' 一行末尾增加内核参数。看起来像这样:ro splash vt.handoff=7 acpi_backlight=vendor
按 Ctrl+x 启动
2 - 永久增加
编辑 /etc/default/grub 在 GRUB_CMDLINE_LINUX_DEFAULT 中增加内核参数
看起来像这样:
GRUB_CMDLINE_LINUX_DEFAULT="ro splash vt.handoff=7 acpi_backlight=vendor
保存后执行 update-grub
代码: 全选
xmai@dagger:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04.3 LTS
Release: 16.04
Codename: xenial
xmai@dagger:~$ ls /sys/class/backlight/
acpi_video0
xmai@dagger:~$ cat /sys/class/backlight/*/brightness
77
xmai@dagger:~$ cat /sys/class/dmi/id/{sys_vendor,product_name}
Intel Corporation
STCK1A32WFC
xmai@dagger:~$ lspci -knn | grep -iA2 "vga\|3d\|disp"
00:02.0 VGA compatible controller [0300]: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics & Display [8086:0f31] (rev 0f)
DeviceName: Onboard IGD
Subsystem: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics & Display [8086:2061]
Kernel driver in use: i915
Kernel modules: i915
代码: 全选
xmai@dagger:~$ cat /sys/class/backlight/intel_backlight/brightness
cat: /sys/class/backlight/intel_backlight/brightness: 没有那个文件或目录
It is USEFUL for me. Thanks a lot!vickycq 写了: ↑2016-10-07 21:23gnome3 亮度设置易出现问题daman 写了:1.GNMOE3.0桌面环境
尝试向 /sys/class/backlight/acpi_video0/brightness 或 /sys/class/backlight/intel_backlight/brightness 中写入亮度数值看有无实际效果。例如daman 写了:8
3350代码: 全选
echo 4 | sudo tee /sys/class/backlight/acpi_video0/brightness echo 2000 | sudo tee /sys/class/backlight/intel_backlight/brightness
顺序测试下列各组内核参数。每行为一组,每次一组,不可叠加daman 写了:acpi_video0 intel_backlight
acpi_backlight=vendor
acpi_osi=Linux
acpi_backlight=vendor acpi_osi=Linux
acpi_backlight=video
acpi_backlight=native
acpi_backlight=none
===============
附增加内核参数方法
===============
1 - 临时增加
开机到 GRUB 界面时,按 e 进入编辑界面
在 'linux' 一行末尾增加内核参数。看起来像这样:ro splash vt.handoff=7 acpi_backlight=vendor
按 Ctrl+x 启动
2 - 永久增加
编辑 /etc/default/grub 在 GRUB_CMDLINE_LINUX_DEFAULT 中增加内核参数
看起来像这样:
GRUB_CMDLINE_LINUX_DEFAULT="ro splash vt.handoff=7 acpi_backlight=vendor
保存后执行 update-grub