Launching Minecraft with Forge installed (vanilla is fine, onl=
y happens with
the splash screen enabled) often causes a glSwapBuffers to never return and
spin on a single cpu core.
The freeze seems to always occur right after the texture atlas was created =
(can
be seen in log) and similarly on the same step on the splash itself, so it =
is
possible that this is some interaction between the splash rendering and loa=
ding
resources.
The rest of the system continues to run fine and running SIGKILL is enough =
to
stop the process (Other OpenGL-based applications continue function as
expected).
Running on Arch Linux, with Mesa 17.1.0, OpenJDK 8.u121-1 with an AMD Radeon
RX480 (8 GB) and a custom compiled Linux 4.11.3 kernel (Based linux-zen pac=
kage
with ACS override).
This has happened on older kernel versions as well and the exact Minecraft =
and
Forge versions do not seem to matter (beside that it is at least Minecraft =
1.7,
which is when that splash screen got added).
I have also observed a very similar freeze (spinning on single core, no
system-wide effects) with QupZilla (Qt 5.8, WebEngine), however this is very
rare and I could not get any specific info on it. No other programs seem
affected.