Eye strain possibly caussed by PWM configuration in xorg.
Submitted by ivan
Assigned to Chris Wilson @ickle
Description
Created attachment 126586
Eye strain in linux.
Hi everyone, i come here to report a bug that is causing me a lot of problems.
Let start, i have 3 pcs, a hp netbook, a desktop pc and a asus laptop, always i tried to install some linux that i wanna use in that time, so now i'm using Windows 8.1 why?Always i come to windows sadly by the same reason:
EYE STRAIN.
While in Windows i can stay for 10 hours using the pc, watching videos, reading pdf, drawing,etc.In any linux distro i can't stay half hour and my eyes stars feel like drying, i really annoying effect, its unbearable for me and i think that in a long time could be dangerous, so i investigate about the theme.
The first that i found in internet was to use flu.x or redshift, sadly that doesn't work.
The second was the refresh rate, i think that could be but modifying with xrandr doesn't gave goos results.
The last info that i found was that the guilty in this case was the PWM,i suppose that is the problem i don't found more info.
https://en.wikipedia.org/wiki/LED-backlit_LCD
I found that linux use a really low pwm, so i tried to change it with the intel gpu tool, right i change i make the pen test and effectively the pwm solved, now the high brightness of the screen burn my eyes...
I tried the pen test in windows and i found that in the pwm is low in lower brightness but i not cause my eye strain, so i really don't now what i could do more. You now a lot more about this so i really thank your help.
I attached a pdf with the info about my screen, have a lot of stuff that i think that could be usefull.
Attachment 126586, "Eye strain in linux.":
N156BGE-L41.pdf