#947073 sddm: 100 % CPU usage when waiting for logon

Package:
sddm
Source:
sddm
Description:
modern display manager for X11
Submitter:
Heinrich Schuchardt
Date:
2019-12-20 13:18:04 UTC
Severity:
normal
#947073#5
Date:
2019-12-20 13:15:58 UTC
From:
To:
Dear Maintainer,

I am running sddm with sddm-theme-breeze. When the system is idle
command top
shows:

  PID USER %CPU  %MEM     TIME+ COMMAND
  785 sddm 25.5  12.7  24:06.48 llvmpipe-0
  786 sddm 25.5  12.7  24:05.31 llvmpipe-1
  788 sddm 25.5  12.7  24:06.56 llvmpipe-3
  787 sddm 25.2  12.7  24:03.97 llvmpipe-2
  781 sddm  0.3  12.7   0:43.94 sddm-greeter

So a whole CPU core is loaded with what? Essentially doing nothing. Just
waiting for a user to type in his password.

Waiting for an event should not load the CPU at all.

Using 250 MiB of RAM waiting for a password entry is also unexpected.

Best regards

Heinrich