Bug#985769: xwayland: 100% of CPU, The system gets stuck.

[Michel Dänzer <michel@daenzer.net>]

On 2021-03-23 8:57 a.m., john wrote:
> Package: xwayland
> Version: 2:1.20.10-3
> Severity: important
> X-Debbugs-Cc: guoke.zhao@gmail.com
> 
> Dear Maintainer,
> 
> The xwayland cpu utilization rate reaches 100%, which often happens.One of the
> reproduction process is as follows:

Is this using GNOME, or a different Wayland environment?


> 1. System boot, open terminal window.

Which terminal emulator application?


> 2. Drag the window so that the mouse pointer touches the right edge of the
> screen,
>    The xwayland cpu usage rate will reach 100% (Especially when the system is
> just started):
> 
> 进程号 USER      PR  NI    VIRT    RES    SHR    %CPU  %MEM     TIME+ COMMAND
>    1413 john      20   0 1071740  59244  39136 R 100.0   1.5   0:06.20 Xwayland
> 
>   At this point, the mouse is still available, and the terminal is also
> available.

So the terminal window's contents are still updating at this point? Is the window still at the original size?


> 3. Ctrl+D exit the terminal program and the GUI will be completely stuck and
> unusable, but ssh still works.
> 
> In addition, many other operations may also cause this problem.

I'd be interested in more examples, I've been unable to reproduce this so far.


-- 
Earthling Michel Dänzer               |               https://redhat.com
Libre software enthusiast             |             Mesa and X developer