I have been using linuxcnc 2.9.0~Pre0 from sources, run in place. Until today, it has worked, mostly. Before today, about 2x per week it would freeze and I had to cycle power to get it working. Now, linuxcnc freezes.

After fixing a problem with apt database,
> sudo apt update
> sudo apt --fix-broken install
removed some broken install of linuxcnc

> cd ~/RTAI/linuxcnc
> git pull
...
> ./configure
> make
> sudo make setuid
> source ../scripts/rip-environment
> linuxcnc
A popup allowed selecting the config - selected 4axis
The config was found
Starting linuxcnc...
The linuxcnc banner window appears.
The mouse, keyboard, and display freeze. The clock in the upper right corner does not advance. The mouse pointer does not move, sometimes it disappears. Ctrl-Alt-F2, etc, have no effect.
I have to cycle power to reboot.

> uname -a
Linux Sherline 4.14.148-RTAI-AMD64 #2 PREEMPT ...
> from /etc/os-release the kernel is buster.

How do I fix this?

Tom Dean


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