I've bisected the issue to this commit:
35840ab189595b817fa8b1a1df8cc92474a7c38d st/dri: implement MSAA for GLX/DRI2 framebuffers
The only thing that was recompiled was mesa, with the following options:
--with-dri-driverdir=/usr/lib/xorg/modules/dri --with-gallium-drivers=r600,swrast --with-dri-drivers= --with-egl-platforms=drm,x11 --enable-gallium-egl --enable-shared-glapi --enable-gallium-llvm --enable-glx-tls --enable-gles1 --enable-gles2 --enable-egl --enable-dri --enable-glx --enable-xa --enable-osmesa --enable-gbm --enable-texture-float
The issue was triggered by restarting kwin (kwin --replace) between each compile and locking and unlocking the screen.
I've bisected the issue to this commit:
35840ab189595b8 17fa8b1a1df8cc9 2474a7c38d st/dri: implement MSAA for GLX/DRI2 framebuffers
The only thing that was recompiled was mesa, with the following options:
--with- dri-driverdir= /usr/lib/ xorg/modules/ dri gallium- drivers= r600,swrast dri-drivers= egl-platforms= drm,x11 gallium- egl --enable- shared- glapi gallium- llvm glx-tls texture- float
--with-
--with-
--with-
--enable-
--enable-
--enable-
--enable-gles1
--enable-gles2
--enable-egl
--enable-dri
--enable-glx
--enable-xa
--enable-osmesa
--enable-gbm
--enable-
The issue was triggered by restarting kwin (kwin --replace) between each compile and locking and unlocking the screen.