brightnessdisplaylaptopoperating systems
Is it possible to increase the brightness of laptop screen above what's possible in BIOS and Ubuntu Linux/Windows ?
I have an old laptop (Lenovo-X200s) and the maximum brightness is rather dark. I wish to increase it further beyond what's possible using normal available tools.
I don't care if an increase in brigthness will decrease the lifetime of the laptop, since I need it for most a year.
Can someone provide me with suggestions ?
From Brightness Controls on Integrated Display Panels:
In Windows operating systems, brightness controls are implemented in the operating system-supplied monitor driver, Monitor.sys. The monitor driver implements a Windows Management Instrumentation (WMI) interface to let applications—such as the operating system’s brightness slider—interact with the brightness level.
The monitor driver registers with the operating system device power policy so that brightness levels respond to changes in power policy. The monitor driver registers for Advanced Configuration and Power Interface (ACPI) notifications to process ACPI-based brightness shortcut keys.
An OEM can implement brightness control by using function shortcut keys such as Fn-F6 or Fn-F7.
My system is a ATIV Book 8, model NP880Z5E-X01UB. Also Intel HD 4000 and Radeon 8700M GPUs.
I recently updated W10 to anniversary edition and ran into this issue yet again. I have no idea how I was able to resolve it last time. I attempted to uninstall, and reinstall all drivers from Samsung over again, in various orders, running the Win10 Brightness Control Patch each time provided by Samsung Update, but in each case, never yielded results. I should also note that I've also disabled adaptive brightness in display options and also my power options plan. This was required the first time I got this working so I made sure those settings were changed back after the update reverted them.
After some more intense googling.. I finally found a solution that worked for me.
Modify the following registry key(s):
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class{4d36e968-e325-11ce-bfc1-08002be10318}\0001]
FeatureTestControl
Change f000 to f008
There are other "control sets" other than the CurrentControlSet. I wound up changing them all to f008 prior to a reboot. Though I suspect the CurrentControlSet is all you will need.
Source: https://communities.intel.com/thread/81571
As always, careful when modifying the registry.
Best Answer
In Linux:
In Windows: