03-31-2016 04:01 AM - edited 03-31-2016 04:04 AM
the brightness of the built-in monitor (touchscreen) can't be changed anymore. It is a lenovo ThinkPad X1 Carbon (3rd Generation), model 20BTS0W70E, with Windows 8.1 Enterprise (64). Additionally, the Hotkeys Fn+F5 and Fn+F6 do not work anymore. All other hotkeys and options work properly.
Meanhwhile I have installed the latest video/graphic adapter driver, power management driver, and the hotkey features integration. But the issue hasn't been been solved. Moreoverm I reset the plan settings of the power plan (within power options) through "Restore default settings for this plan", of course with restarting the PC. But: nothing has changed.
What else can I do?
Thanks in advance, and kind regards,
J. P. S.
Solved! Go to Solution.
04-02-2016 05:40 AM
I "googled" a while and found the root cause. Before the issue occured, I had installed the TeamViewer 11 monitor driver. This driver blocked an adjustment of the brightness control. I deinstalled it. Thereafter, the issue has been solved.