Comment 6 for bug 1814125

the bug still happens if I enable seconds display. still no gnome extensions installed.

here is an extract of a top running in background when screen auto locks and cpu is burning (watch -n1 "top -b -n 1 >> cpu.log") :

top - 12:02:08 up 36 min, 1 user, load average: 0.97, 0.78, 0.62
Tasks: 273 total, 2 running, 271 sleeping, 0 stopped, 0 zombie
%Cpu(s): 17.9 us, 4.8 sy, 0.0 ni, 77.2 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
MiB Mem : 7860.6 total, 2552.6 free, 2671.6 used, 2636.4 buff/cache
MiB Swap: 512.0 total, 512.0 free, 0.0 used. 4761.5 avail Mem

  PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
 3427 laulau 20 0 3335356 308544 98700 R 83.3 3.8 7:55.70 gnome-shell
 4147 laulau 20 0 2371472 461776 152652 S 11.1 5.7 1:43.68 firefox
 1214 message+ 20 0 24216 6244 3836 S 5.6 0.1 0:01.80 dbus-daemon
 1354 root 20 0 248388 9456 6404 S 5.6 0.1 0:00.73 polkitd
 1505 root 20 0 263212 8256 7012 S 5.6 0.1 0:00.06 gdm3
 4350 laulau 20 0 1698980 171616 84856 S 5.6 2.1 0:24.28 WebExtensions
 4476 laulau 20 0 199236 28424 13388 S 5.6 0.4 0:00.30 chrome-gnome-sh
 4723 laulau 20 0 2010052 489476 206920 S 5.6 6.1 7:09.37 Web Content
 4978 laulau 20 0 313968 27492 21004 S 5.6 0.3 0:00.17 update-notifier
 9080 laulau 20 0 26308 3852 3232 R 5.6 0.0 0:00.03 top
    1 root 20 0 195224 9552 6788 S 0.0 0.1 0:03.25 systemd