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IDProjectCategoryView StatusLast Update
0005823Kali Linux[All Projects] General Bugpublic2019-11-28 01:10
Reporteranishkgt Assigned To 
Status newResolutionopen 
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:

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