Not sure what the cause, but after the update vlc causes a total freeze of the system with most videos. I have tried changing the preferences, and even resetting them, but I can’t seem to be able to fix this. Essentially, I have no video.
Checking the log, I see there was no update to vlc (I have version 2.2.1-6), but I had an update of xf86-video-intel (2.99.917-5 -> 1:2.99.917+364+gb24e758-1).
libva-intel-driver is already installed, but I’m not sure if I have it properly configured.
If I disable hardware accelaration and use xv video driver in vlc, I get comparably watchable video, but the CPU load suffers.
I had problems with a previous mesa update, which I haven’t yet solved, and I had to disable hardware acceleration in firefox and chromium to get them to stop lagging. It may be that my graphics card is too old and is slowly becoming obsolete.
Seems that the latest xorg / mesa drivers for Intel are autodetecting opengl 3.2 on all thier GPU’s, even old ones like on my core2duo. Try going into system settings and changing the compositor to whatever your GPU can handle. I’ve also discovered that on Intel GPU’s at least, that setting the tearing prevention (vsync) to full screen repaints fixes many GPU related issues on KDE4 / Plasma5.
I’ve tried many different settings before, and settled on these because of different issues (lag in desktop effects, high CPU load). I’m hesitating to fiddle right now, since I have a workaround, but I’ll give it a try when I have time.