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Timestamp		Message
17 Nov 2019
21:46:19	georgewsinger	kanetw Is it possible/likely that our SIGUSR1 modifications to godot are somehow causing these HMD freezes? I'm trying to reproduce HMD freezes with normal godot 3.1 master + a stripped godot_openvr/demo and have so far been unable to (but last time it took me a several minutes to reproduce a freeze with the stripped demo).
21:48:42	georgewsinger	There's nothing going on with SIGUSR1 in godot_openvr so this has to be incredibly unlikely.
22:02:02	kanetw	it's possible openvr uses SIGUSR1 for wakeup
22:44:27	georgewsinger	IIRC we had HMD freezes before we every messed with XWayland
22:44:43	georgewsinger	That said I was unable to induce a freeze using pure godot 3.1
22:44:52	georgewsinger	So it's either SIGUSR1 stuff or gdwlroots
22:48:44	georgewsinger	I just commented out SIGUSR1 stuff in our Simula's godot binary. Going to see if I can induce a freeze in Simula using xdg apps
23:00:34	georgewsinger	kanetw Does the following sufficiently demonstrate that godot_openvr doesn't use SIGUSR1? `george@UbuntuBox:~/godot_openvr$ grep -nr SIGUSR george@UbuntuBox:~/godot_openvr$`
23:00:50	kanetw	n
23:00:58	georgewsinger	Ok...well...so far no Simula freezes
23:01:05	kanetw	strace the godot binary while launching a nonsimula project
23:01:21	georgewsinger	After taking out SIGUSR1 and our call to start_xwayland
23:01:27	kanetw	and grep for USR1
23:26:27	georgewsinger	Redacted or Malformed Event
23:26:35	georgewsinger	Redacted or Malformed Event
23:26:54	georgewsinger	`george@UbuntuBox:~/godot_openvr_master_stripped/demo$ strace ~/godot3.1/bin/godot.x11.tools.64 2> strace.txt # ... george@UbuntuBox:~/godot_openvr_master_stripped/demo$ cat strace.txt \| grep SIGUSR george@UbuntuBox:~/godot_openvr_master_stripped/demo$`
23:27:03	georgewsinger	Doesn't look like it's being used ?
18 Nov 2019
00:31:08	kanetw	grep without the SIG
00:31:15	kanetw	just USR
00:48:35	georgewsinger	Still returns nothing.
00:58:13	kanetw	hm
21:25:02	georgewsinger	❌ Just reproduced our Simula freeze with XWayland/SIGUSR stuff removed, so that's not it.
21:26:34	georgewsinger	kanetw Can you think of anything in gdwlroots that might be causing HMD freezes?
21:34:38	kanetw	not off the top of my head
21:34:46	kanetw	if you could find out what exactly stops being called, and what still is
21:34:48	kanetw	that'd help
19 Nov 2019
00:26:43	georgewsinger	> if you could find out what exactly stops being called, and what still is > that'd help What do you mean? Like what godot_openvr functions are being stop/called?
01:19:07	kanetw	basically what changes from our perspective when it hangs
02:30:05	georgewsinger	> basically what changes from our perspective when it hangs Am I looking in godot_openvr primarily, or across the whole system? Should I just print statement everything when doing this for inspection?
02:30:56	georgewsinger	I ran a bunch of tests today and posted the results: https://github.com/GodotVR/godot_openvr/issues/55#issuecomment-555301850

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