From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
Subject: [Bug 111841] New: Setting gamma or color temperature on
GK104 causes horizontal artifacts / flickering
Date: Fri, 27 Sep 2019 09:07:09 +0000
Message-ID:
Bug ID
111841
Summary
Setting gamma or color temperature on GK104 causes horizontal=
artifacts / flickering
Product
xorg
Version
unspecified
Hardware
x86-64 (AMD64)
OS
Linux (All)
Status
NEW
Severity
normal
Priority
not set
Component
Driver/nouveau
Assignee
nouveau@lists.freedesktop.org
Reporter
brianclinkenbeard@protonmail.com
QA Contact
xorg-team@lists.x.org
Created attachment 145545 [deta=
ils]
dmesg log
After setting the gamma or color temperature through various methods (redsh=
ift
-m randr, redshift -m drm, GNOME night shift on xorg or wayland) horizontal
artifacts begin to flicker. This does not severely obscure the screen but
appears as small lines horizontal lines flickering quickly. This notably do=
es
not happen using the "vidmode" method of redshift
(https://github.com/jonls/redshift/blob/master/src/gamma-vidmode.c).=
I've
tested this on multiple displays.
The effect is more noticeable on darker backgrounds.
Steps to reproduce:
1) Use GK104/NVE0 on Xorg or Wayland.
2) Try to adjust color temperature or gamma with software such as redshift =
(-m
randr or drm).
I've attached the dmesg log, note that I am not certain the gnome-shell
segfaults have anything to do with this issue.
Kernel:
Linux desktop 5.2.0-2-amd64 #1 SMP Debian 5.2.9-2 (2019-08-21) x86_64 GNU/L=
inux
Card:
NVIDIA Corporation GK104 [GeForce GTX 770]