[Linux] Crashing when pressing a button

[riher]

When pressing one of the buttons on the right, the program freezes and can't be terminated without SIGKILL. There's no terminal output/log files I can find.

The error occurs on 2.1.5 and with a current dev-branch build.

I'm running an up-to-date Arch Linux 64bit.

$ java -version
openjdk version "1.8.0_162"
OpenJDK Runtime Environment (build 1.8.0_162-b12)
OpenJDK 64-Bit Server VM (build 25.162-b12, mixed mode)

[eivindveg]

Which buttons specifically?

[riher]

Any of these three blue buttons on the right. I tested it again, though, and for the lower two it only happens once I put something into the inputs. So probably not the button press itself, but the form handling or server queries are the problem.

[eivindveg]

Reviewing this tomorrow.

EDIT: Current assumption is that xdg-open might have issues with Wayland. Can you confirm your system is running Wayland, not X?

[riher]

Nope, running X11.

[eivindveg]

Reproduced on Ubuntu 17.10 running Wayland. No log output of issue. Application hangs indefinitely and does not respond to normal SIGINT or SIGTERM. Will investigate why the xdg-open threads do no have timeouts or exception handling.

[eivindveg]

@riher: Can you confirm that you are running a newer version of gnome shell? The issue seems to reside in the built-in desktop handling, not xdg-open.

For reference: LinuxService.java line 106 evaluates to true, whilst line 107 never returns, and has no effect other than completely hanging the application as the action is run on the application thread.

[riher]

I'm not running the complete gnome-shell, though parts of it are installed. Running a hodgepodge of a desktop based on lightdm + awesome wm. Tell me if I can further help you track down the error.