Comment 6 for bug 1787362

This "Gnome freeze" bug happens on my RHEL 7.6 with gnome-shell-3.28.3-6.el7.x86_64.

It happens once in a while (daily), that gnome freezes for couple of minutes (!). I can move the mouse, and I see the seconds of the clock changing, but the mouse or keyboard clicks has no response.

- I've also tried to disable all extensions, but it was not fixed.

- Interesting to note that it sometimes (not always) happens when WiFi has bad connection. Then, when gnome is back to normal, I see "Activation of Network Connection failed" message on top.

Here's some of the common journal errors/failures I see right after gnome freeze:

- pushModal: invocation of begin_modal failed
- g_array_unref: assertion 'array' failed
- GoaAlarm: failed to read from timer fd: Error reading from file descriptor: Operation canceled
- kernel: usb 2-3: Disable of device-initiated U1 failed.
- kernel: usb 2-3: Disable of device-initiated U2 failed.
- kernel: usb 2-3: usb_reset_and_verify_device Failed to disable LTM
- g_simple_action_set_enabled: assertion 'G_IS_SIMPLE_ACTION (simple)' failed
- JS ERROR: TypeError: connectionSettings is null
- clutter_layout_manager_get_child_meta: assertion 'CLUTTER_IS_LAYOUT_MANAGER (manager)' failed
- g_object_set: assertion 'G_IS_OBJECT (object)' failed

Attaching journal logs I took right after such gnome freezes.