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IDProjectCategoryView StatusLast Update
0005823Kali Linux[All Projects] General Bugpublic2020-12-01 10:41
Reporteranishkgt Assigned To 
Status closedResolutionopen 
Product Version2019.3 
Target VersionFixed in Version 
Summary0005823: Momentary screen flicker
DescriptionKali running on VirtualBox, open widows flicker when moving the mouse around
Steps To ReproduceMove a window or the mouse several times.



2019-11-27 20:00

reporter   ~0011397

Disabling 3D acceleration via VM Manager fixes this issue, at least it did for me. Must be something to do with that.

3d.PNG (9,077 bytes)
3d.PNG (9,077 bytes)


2019-11-28 01:10

reporter   ~0011408

Changing the xfwm (compositor) vblank method to 'xpresent' or 'off' resolved this for me under VMware Workstation 15.5 with 3D acceleration enabled.

Restart xfwm with vblank set to 'xpresent':
$ xfwm4 --replace --vblank=xpresent &

Restart xfwm with vblank set to 'off':
$ xfwm4 --replace --vblank=off &

Permanently set the vblank method:
$ xfconf-query -c xfwm4 -p /general/vblank_mode -s xpresent

Documentation on xfwm vblank:


2020-12-01 10:41

administrator   ~0013829

This report has been filed against an old version of Kali. We will be closing this ticket due to inactivity.
Please could you see if you are able to replicate this issue with the latest version of Kali Linux (
If you are still facing the same problem, feel free to re-open the ticket. If you choose to do this, could you provide more information to the issue you are facing, and also give information about your setup?
For more information, please read:

Issue History

Date Modified Username Field Change
2019-11-27 01:03 anishkgt New Issue
2019-11-27 20:00 Himblez File Added: 3d.PNG
2019-11-27 20:00 Himblez Note Added: 0011397
2019-11-28 01:10 iesplin Note Added: 0011408
2020-12-01 10:41 g0tmi1k Note Added: 0013829
2020-12-01 10:41 g0tmi1k Status new => closed