Re: [e-users] new laptop setup -> screen flickers three times

[Carsten H. (T. R. <ra...@ra...>]

On Sun, 16 Apr 2017 01:22:18 +0200 (CEST) Peter Koellner <pe...@as...>
said:

tbh flickering is going to be a combination of xorg and e - e will configure
the screen... then the xserver may or may not flicker things or do whatever it
wants. we dont' directly control the screen - simply ask x via xrandr to
configure it in a specific way.

you can ask e to not apply screen setup on login. i imagine gnome is not
configuring the screen at all on login thus why you dont see it.

> Hi!
> 
> I am installing a fresh new laptop with a NVIDIA GTX1060 graphics card, using
> debian 9.
> 
> I have freshly compiled and installed efl 1.19.0 and enlightenment 0.21.7
> yesterday, so far so good. Now I have connected two external monitors to
> that, one via display port to the left, another via HDMI to the right, and
> that works too. The laptop screen showed some color steps in the background
> gradient, which vanished after setiing the Dithering Controls in the NVIDIA X
> Server Settings application to Enabled - Temporal - Auto. At that point
> somewhere I opened the enlightenment Settings panel, Screen -> Screen Setup,
> which gives another configuratino view on the setup. Here I activated "Laptop
> Lid" and "Backlight" for the laptop display (some tooltip or help text
> explaining whast this actually does would not hurt, either..). Clicking on
> "Apply", I noticed that the laptop display backlight(or the screen from black
> to gray?) flickers three times before showing the normal screen again.
> 
> The same thing happens on entering the session after login. This is
> independent of the options checked in the settings panel. I can stop this
> behaviour by deselecting "Restore setup on start" in this panel and
> logout/login or restart, but then strangely the color stepping on the display
> reappear. Now I am not sure how all these configuration mechanisms play
> together, but I would like to avoid inducing some hardware damage by this
> strange flickering. There does not seem to be any error being logged, so it
> is probably just some autoadjustment of screen size or something, but I never
> had this on any other laptop before.
> 
> There also still is the preinstalled ubuntu 17.04 running a gnome3
> environment on the machine, and there everything looks fine, so it is not a
> hardware problem...
> 
> Switching off one of the external monitors produces five flickers, each
> coming in maybe half a second from each other, switching it on again gives
> seven flickers, all only on the laptop display. It looks a bit as if some
> modes are probed and fail or something similar.
> 
> Any ideas what that might be and how to avoid it?
> 
> regards
>    Peter
> 
> 
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> _______________________________________________
> enlightenment-users mailing list
> enl...@li...
> https://lists.sourceforge.net/lists/listinfo/enlightenment-users
> 


-- 
------------- Codito, ergo sum - "I code, therefore I am" --------------
The Rasterman (Carsten Haitzler)    ra...@ra...