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Bug 789060 - [Wayland] top bar dynamic transparency flickers between transparent and solid when browing through menus
[Wayland] top bar dynamic transparency flickers between transparent and solid...
Status: RESOLVED FIXED
Product: gnome-shell
Classification: Core
Component: general
3.26.x
Other Linux
: Normal normal
: ---
Assigned To: gnome-shell-maint
gnome-shell-maint
: 790384 (view as bug list)
Depends on:
Blocks:
 
 
Reported: 2017-10-16 14:40 UTC by Michael Biebl
Modified: 2018-12-12 13:59 UTC
See Also:
GNOME target: ---
GNOME version: ---

Attachments
screencast for GNOME 3.30 (1.59 MB, video/webm)
2018-12-11 20:07 UTC, Michael Biebl 		Details

Description Michael Biebl 2017-10-16 14:40:09 UTC 
When browsing through the menu of a non-maximized window, the top bar flickers.
It quickly changes between solid and translucent.

I recorded this behaviour, you can find a screencast at 
https://people.debian.org/~biebl/gnome-shell-topbar.webm

This problem is only reproducible under Wayland. I don't see it under Xorg.

I could confirm the problem both in Debian sid (using GNOME 3.26.1) and Ubuntu 17.10.
Comment 1 Florian Müllner 2017-11-15 16:03:15 UTC 
*** Bug 790384 has been marked as a duplicate of this bug. ***
Comment 2 Michael Biebl 2018-03-20 19:07:42 UTC 
Still reproducible with GNOME 3.28 (it might have become worse actually and the flickering is even more noticeable)
Comment 3 Michael Catanzaro 2018-12-11 19:48:46 UTC 
Seems to be fixed in 3.30.
Comment 4 Michael Biebl 2018-12-11 20:03:42 UTC 
Unfortunately not. This is still broken with 3.30
Comment 5 Michael Biebl 2018-12-11 20:07:32 UTC 
Created attachment 374175 [details]
screencast for GNOME 3.30
Comment 6 Michael Catanzaro 2018-12-11 23:34:07 UTC 
Hm, I remember being able to reproduce this problem very recently (in fact, after I had upgraded to Fedora 29, so I was wrong to suggest it was fixed in "3.30"), but it's definitely solved for me now on Fedora 29....
Comment 7 Jonas Ådahl 2018-12-12 09:04:52 UTC 
It was fixed by https://gitlab.gnome.org/GNOME/gnome-shell/commit/d21b276c077ab3117edde4da8b992648bd643cc5 which is included in 3.30.2.
Comment 8 Michael Biebl 2018-12-12 11:59:27 UTC 
Hm, I'm running gnome-shell 3.30.2

$ apt-cache policy gnome-shell
gnome-shell:
  Installed: 3.30.2-1
  Candidate: 3.30.2-1
  Version table:
 *** 3.30.2-1 500
        500 http://ftp.debian.org/debian sid/main amd64 Packages
        100 /var/lib/dpkg/status
Comment 9 Michael Biebl 2018-12-12 13:59:33 UTC 
Further investigating this, it turns out that once I disable the dash-to-dock extension (which is at vesion v64), the problem is gone.

Changing the opacity in Dash-to-Docks Appearance settings to either Fixed for Default also helps. The problem is triggered when using either Dynamic or Adaptive.
I'll take this over to https://github.com/micheleg/dash-to-dock/issues