Bug 1572924 - Upgrade to 4.16.3 causes gamma flicker with amdgpu
Summary: Upgrade to 4.16.3 causes gamma flicker with amdgpu
Alias: None
Product: Fedora
Classification: Fedora
Component: xorg-x11-drv-amdgpu
Version: 27
Hardware: x86_64
OS: Unspecified
Target Milestone: ---
Assignee: Christopher Atherton
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2018-04-28 18:23 UTC by Tomas Kovar
Modified: 2018-11-30 21:18 UTC (History)
19 users (show)

Fixed In Version:
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Clone Of:
Last Closed: 2018-11-30 21:18:44 UTC
Type: Bug

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Description Tomas Kovar 2018-04-28 18:23:43 UTC
Description of problem:

After upgrading to kernel 4.16.3-200.fc27, from 4.15.17-300.fc27, the Gnome's night light flickers with mouse movement.

Downgrading to 4.15.17 removes the flicker.

Version-Release number of selected component (if applicable):

Kernel 4.16.3-200.fc27

Steps to Reproduce:
1. Upgrade kernel to 4.16.3-200
2. Log into Gnome X11 session
3. Enable night light
4. Move the mouse pointer
5. Observe resetting the gamma to default and back

Actual results:

Screen flickers (resets gamma to default and immediately resets back to Night light's value) with each mouse movement.

Expected results:

Not flickering when moving mouse.

Additional info:

X11 Gnome Session (also Wayland session, but not with each mouse movement, only occasionally)

AMDGPU-based graphics card (AMD Vega 64)

xorg-x11-drv-amdgpu X11 driver

Comment 1 Jeremy Cline 2018-04-30 16:52:24 UTC
Hi Tomas,

Thanks for the bug report! I've reassigned this to the driver component since that's how track video-related issues (even if the problem is in the kernel component).

Comment 2 Tomas Kovar 2018-04-30 18:13:27 UTC
Hi Jeremy,

thanks for the info.

The update to kernel 4.16.4-200.fc27 solves the problem with flickering with each mouse move. Now it flickers only when ramping up/down gamma at the beginning or end of the Nightlight plan (i.e., only occasionally, when the gamma is set to a different than the current value).

Comment 3 Ben Cotton 2018-11-27 15:58:09 UTC
This message is a reminder that Fedora 27 is nearing its end of life.
On 2018-Nov-30  Fedora will stop maintaining and issuing updates for
Fedora 27. It is Fedora's policy to close all bug reports from releases
that are no longer maintained. At that time this bug will be closed as
EOL if it remains open with a Fedora  'version' of '27'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version.

Thank you for reporting this issue and we are sorry that we were not 
able to fix it before Fedora 27 is end of life. If you would still like 
to see this bug fixed and are able to reproduce it against a later version 
of Fedora, you are encouraged  change the 'version' to a later Fedora 
version prior this bug is closed as described in the policy above.

Although we aim to fix as many bugs as possible during every release's 
lifetime, sometimes those efforts are overtaken by events. Often a 
more recent Fedora release includes newer upstream software that fixes 
bugs or makes them obsolete.

Comment 4 Ben Cotton 2018-11-30 21:18:44 UTC
Fedora 27 changed to end-of-life (EOL) status on 2018-11-30. Fedora 27 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of
Fedora please feel free to reopen this bug against that version. If you
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