In the evening (after a work day) lock the screen, the morning after unlocking the system slows down, there are delays on all the action, the movement of the mouse cursor intermittent. Reboot solves the problem to the next iteration. Reproducible: Always Steps to Reproduce: 1. Work 2. Lock the screen on a most time 3. Watch I straced plasmashell process. When system slowdown: poll([{fd=3, events=POLLIN}], 1, -1) = 1 ([{fd=3, revents=POLLIN}]) recvmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="g\0\352 3\0\300\1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., iov_len=4096}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 4096 futex(0x20367e4, FUTEX_WAKE_OP_PRIVATE, 1, 1, 0x20367e0, {FUTEX_OP_SET, 0, FUTEX_OP_CMP_GT, 1}) = 1 futex(0x20367b8, FUTEX_WAKE_PRIVATE, 1) = 1 poll([{fd=3, events=POLLIN}], 1, -1) = 1 ([{fd=3, revents=POLLIN}]) recvmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="g\0\352 3\0\300\1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., iov_len=4096}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 4096 futex(0x20367e4, FUTEX_WAKE_OP_PRIVATE, 1, 1, 0x20367e0, {FUTEX_OP_SET, 0, FUTEX_OP_CMP_GT, 1}) = 1 futex(0x20367b8, FUTEX_WAKE_PRIVATE, 1) = 1 ... repeatly
So is the lock screen process taking up a lot of CPU? Is anything else? Is there some intense disk activity? Does this happen if you don't lock the screen?
In my case, consumes CPU the plasmashell process ("plasmashell --shut-up"). Without blocking the screen I did not try - check today. No other anomalies no disk activity\network activity there. Plasmasnell process consumes about 25% of cpu (I suspect one CPU core). If a short time to lock screen, then no problem. The problems begin after a long inactivity (such as after a night).
Created attachment 101766 [details] atop avg The picture shows the state of the system.
I turn off screen lockscreen, and start atop daemon at night. The situation does not change, already at the end of the day the plasma begins to consume the processor. At night, load average about 1.0-1.5, plasma and xorg have CPU consumption,. I can attach a dump of atop, but it has a big size (about 250M). I have CPU consumation and freezes right now, we can debug it.
I update to 5.8.3 . Problem still there
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Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!