On 05/29/16 11:35, Robert Moskowitz wrote:
Been a while since I have been over here. Here is the situation.
I am running up to date Fedora 22 x64 on a Lenovo x120e using Xfce. Install goes back to about when 22 shipped.
For some time now, the video would be dim, like at the powersaving setting, but if I ran on battery and did no input for ~5 min then moved the mouse, I would get full video.
This little trick has stopped working. Laptop display is dimmed. I should mention that the external monitor is running at max video brightness. On boot, if I <Alt-D>, the notebook video starts bright, but quickly dims.
If I boot into bios, the video is dim. There is no video brightness option.
I have gone into powermanagement settings and set everything for max brightness. No difference.
I have looked here for any messages like this and have tried looking for bug reports with nothing coming up. So any ideas? Recommendations?
Does your laptop have an ambient light sensor? I had one go bad on an Acer laptop that would cause trouble. In my case it was flaky and would randomly dim/brighten. It has been a while now, but I think I had to short it out to get things working well.