[Unstable Update] 2021-11-11 - Gnome 41.1, Xorg-Server 21.1, LxQt 1.0, Nvidia 470.86, Plasma 5.23.3

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I realized awful behavior of the

linux516
5.16rc1.211115.gfa55b7d-1

It present in safely removal of USB stick drives: may “PC was hanged” 2 times while that operation: operation did not complete (first time ejecting via GUI menu, second time with udisksctl power-off (after successful sudo eject sda). All other components, GUI works fine, but in order to get safely remove I call PC reboot via GUI and reboot procedure it hangs for several minutes. Hard reset was then.
Second time while udisksctl power-off hangs with no answer I switch to tty and systemctl reboot and it semi-hangs for 20 minutes: kernel periodicaly shows messages about hanged component.
Both times I need to hard reboot PC.

After first hard reset I lost history file of zsh: I have cleaned history now.

Like logs? ok: here is `journalctl`

First hang

~/Desktop ❯ journalctl -b-5 -p3 | grep -i "dumped core"
Nov 16 22:54:33 pc systemd-coredump[24975]: Process 805 (Xorg) of user 0 dumped core.
Nov 16 22:54:35 pc systemd-coredump[25082]: Process 909 (kwin_x11) of user 1000 dumped core.
Nov 16 22:54:36 pc systemd-coredump[25105]: Process 1421 (opera) of user 1000 dumped core.
~/Desktop ❯

Second hang:

Nov 17 11:05:06 pc kernel: INFO: task pool-udisksd:4995 blocked for more than 860 seconds.
Nov 17 11:05:06 pc kernel:       Not tainted 5.16.0-1-MANJARO #1
Nov 17 11:05:06 pc kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Nov 17 11:07:09 pc kernel: INFO: task pool-udisksd:4995 blocked for more than 983 seconds.
Nov 17 11:07:09 pc kernel:       Not tainted 5.16.0-1-MANJARO #1
Nov 17 11:07:09 pc kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Nov 17 11:09:11 pc kernel: INFO: task pool-udisksd:4995 blocked for more than 1105 seconds.
Nov 17 11:09:11 pc kernel:       Not tainted 5.16.0-1-MANJARO #1
Nov 17 11:09:11 pc kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Nov 17 11:11:14 pc kernel: INFO: task pool-udisksd:4995 blocked for more than 1228 seconds.
Nov 17 11:11:14 pc kernel:       Not tainted 5.16.0-1-MANJARO #1
Nov 17 11:11:14 pc kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

The purpose of that post:

  1. Use the 5.16rc1 kernel version only of you need it. Wait for the rc2 at least.
  2. Do not propagate the rc1 into testing and stable “downstream” branches.