Plugging in monitor can freeze sway or can lose all windows & waybar

[Jamedjo]

Description

This occurs intermittently when I plug in my external monitor.

Sometimes all windows are closed including firefox and waybar, other times the whole laptop freezes, and other times I think I recall sway crashing back to the login manager. It doesn't happen every time, and I don't yet have a minimal reproduction.

I have WLR_DRM_NO_MODIFIERS=1 enabled, possibly from the suggestion in swaywm/wlroots#1877. It is a multi-gpu setup with intel active and nvidia deactivated.

Configuration & Version

• Sway Version: sway version 1.6-adb21e2a (Sep 24 2021, branch 'jej/fix-firefox-copy-paste')

My sway branch includes a revert of #5788 and I have recently picked #6479, but the issue has occurred for longer then that. The master commit is b7b9639 from Sep 21st.

I also have a few more controversial wlroots commits, so if they sound relevant then feel free to close this. These are:

cd12aa60 Revert "backend/session: use drmIsKMS"
                 Removes dependency on libdrm version not yet available on Ubuntu 20.04
38134453 Revert "gtk-primary-selection: drop support"
                 Allows copy and paste from Firefox URL bar
599d32af Revert "seat: use WL_SEAT_ERROR_CAPABILITY"
                 Sets wayland-server dependency to 1.18 for Ubuntu 20.04 compatability
270d1511 Revert "render/egl: check "EGL_KHR_platform_gbm" for EGL gbm platform"
                 Ubuntu compatability due to Mesa version, see: https://github.com/swaywm/wlroots/pull/2832

I've been hesitant to open this issue because of these differences from master, but need these for sway to run on Ubuntu 20.04 LTS.

Proprietary graphics drivers, including nvidia, are not supported. Please use the open source equivalents, such as nouveau, if you would like to use Sway.

I have nvidia graphics disabled:

lspci -vnnn | grep VGA          
00:02.0 VGA compatible controller [0300]: Intel Corporation UHD Graphics 630 (Mobile) [8086:3e9b] (prog-if 00 [VGA controller])

• Debug Log:

  • https://gist.github.com/Jamedjo/0cf5f005c81f1660eadbac9e0e92469a includes a log from the 24th September freeze, and a tail of the current log where all windows disappeared.

• Configuration File:

  • https://gist.github.com/Jamedjo/22151376ae962dfe58afb0009a01f544

• Stack Trace:

  • Today all windows disappeared and waybar disappeared. On 24th September sway froze but did not crash. I think it has also crashed previously, but have about 30 coredumps for sway so am not sure which it would be. The last coredump I have is from 2021-07-12 so I've attached that in https://gist.github.com/Jamedjo/c8265d53b36e908dc2fbbbedbcd92cf7 and also included sudo coredumpctl info sway | wl-copy to include the others.

[Jamedjo]

Possibly related to #6310 or #5757

[Xyene]

03:10:06.150 [INFO] [wlr] [wayland] error marshalling arguments for keymap: dup failed: Too many open files

Yes, this looks like the same bug as #6310.