Public bug reported:
When starting a game based on libsdl2 (gzdoom or my own project ecwolf
in particular) there seems to be a strange side effect of causing other
applications to flicker. In particular Firefox will blank (white
screen) and recover (awhile back it would blank and never recover, but
that has since been fixed). As of late however a new issue has popped
up where by after closing the SDL2 program the desktop environment would
start rapidly flickering to black.
The former always occurs. The latter usually doesn't happen, but
requires the desktop session to be closed and restarted to get it back
to normal. Firefox and SDL2 seem to be part of the equation but I
suspect other hardware accelerated programs can cause the issue. I just
have little reason to run others side by side.
I suspect that this is a graphics driver issue, but it's possible SDL2
is to blame.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: libsdl2-2.0-0 2.0.8+dfsg1-1ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CurrentDesktop: KDE
Date: Wed May 2 21:31:19 2018
InstallationDate: Installed on 2017-09-16 (228 days ago)
InstallationMedia: Kubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170913)
SourcePackage: libsdl2
UpgradeStatus: Upgraded to bionic on 2018-04-26 (6 days ago)
** Affects: libsdl2 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic
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https://bugs.launchpad.net/bugs/1768693
Title:
Display flicker when starting/stopping SDL2 game
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