Brightness not changing
Hi everyone,
i installed the latest version of deepin on my hp elitebook 6930p. but now the problem i am facing is that i cannot change the brightness. when i press the fn +f9/f10 the dialog appears but no change in brightness. Also from control center, brightness is full but not max. However when i restart the pc it has full brightness but when plug in or out the ac adapter, its again gos to low level. Please Reply ASAP. |
Have you tired using the "acpi_backlight=vendor" kernel parameter?
Edit the file at /etc/default/grub (as root) and add the parameter between the quotation marks after "GRUB_CMDLINE_LINUX=" Code:
GRUB_CMDLINE_LINUX="acpi_backlight=vendor" Code:
sudo update-grub Code:
ls /sys/class/backlight |
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Code:
radeon_bl0 |
I take it from your response that your backlight control is still not working?
For future reference, the more information you supply the greater the chance of a useful response -- read the top link in my signature. Does this work: Code:
sudo tee /sys/class/backlight/radeon_bl0/brightness <<< 50 |
Hi, there
This post may help,see floor #9
Deepin Forum • 为了笔记本能调节亮度,装了kde…… http://www.linuxdeepin.com/forum/6/27381?#p136153 |
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