https://bugs.kde.org/show_bug.cgi?id=470026
--- Comment #15 from MartinG <[email protected]> --- I coming from https://bugs.kde.org/show_bug.cgi?id=484837 which is resolved as a duplicate of this, so posting here: The problem persists in Fedora 43, now on another laptop: $ rpm -qa|grep kactiv kf5-kactivities-5.116.0-4.fc43.x86_64 kf5-kactivities-stats-5.116.0-4.fc43.x86_64 kactivitymanagerd-6.5.5-1.fc43.x86_64 $ uname -a Linux lex 6.18.5-200.fc43.x86_64 #1 SMP PREEMPT_DYNAMIC Sun Jan 11 17:09:32 UTC 2026 x86_64 GNU/Linux Switching between activities (meta+a) works well for some time, but suddenly, a single activity triggers something in kactivitymanagerd, making it use 100 % on one core. ltrace is as before: $ ltrace -p $(pidof kactivitymanagerd) _ZN14QReadWriteLock14tryLockForReadE14QDeadlineTimer(0x55ff87cc43e8, 0x7fffffffffffffff, 0x100000000, 0x7fff10f42420) = 1 _ZN14QReadWriteLock6unlockEv(0x55ff87cc43e8, 0x7fffffffffffffff, 0x55ff880388f0, 0x55ff87cc1d50) = 1 _ZN14QReadWriteLock14tryLockForReadE14QDeadlineTimer(0x55ff87cc43e8, 0x7fffffffffffffff, 0x100000000, 0x7fff10f42420) = 1 _ZN14QReadWriteLock6unlockEv(0x55ff87cc43e8, 0x7fffffffffffffff, 0x55ff880388f0, 0x55ff87cc1d50) = 1 _ZN14QReadWriteLock14tryLockForReadE14QDeadlineTimer(0x55ff87cc43e8, 0x7fffffffffffffff, 0x100000000, 0x7fff10f42420) = 1 _ZN14QReadWriteLock6unlockEv(0x55ff87cc43e8, 0x7fffffffffffffff, 0x55ff880388f0, 0x55ff87cc1d50) = 1 _ZN14QReadWriteLock14tryLockForReadE14QDeadlineTimer(0x55ff87cc43e8, 0x7fffffffffffffff, 0x100000000, 0x7fff10f42420) = 1 _ZN14QReadWriteLock6unlockEv(0x55ff87cc43e8, 0x7fffffffffffffff, 0x55ff880388f0, 0x55ff87cc1d50) = 1 _ZN14QReadWriteLock14tryLockForReadE14QDeadlineTimer(0x55ff87cc43e8, 0x7fffffffffffffff, 0x100000000, 0x7fff10f42420) = 1 _ZN14QReadWriteLock6unlockEv(0x55ff87cc43e8, 0x7fffffffffffffff, 0x55ff880388f0, 0x55ff87cc1d50) = 1 _ZN14QReadWriteLock14tryLockForReadE14QDeadlineTimer(0x55ff87cc43e8, 0x7fffffffffffffff, 0x100000000, 0x7fff10f42420) = 1 _ZN14QReadWriteLock6unlockEv(0x55ff87cc43e8, 0x7fffffffffffffff, 0x55ff880388f0, 0x55ff87cc1d50) = 1 _ZN14QReadWriteLock14tryLockForReadE14QDeadlineTimer(0x55ff87cc43e8, 0x7fffffffffffffff, 0x100000000, 0x7fff10f42420) = 1 _ZN14QReadWriteLock6unlockEv(0x55ff87cc43e8, 0x7fffffffffffffff, 0x55ff880388f0, 0x55ff87cc1d50) = 1 _ZN14QReadWriteLock14tryLockForReadE14QDeadlineTimer(0x55ff87cc43e8, 0x7fffffffffffffff, 0x100000000, 0x7fff10f42420) = 1 _ZN14QReadWriteLock6unlockEv(0x55ff87cc43e8, 0x7fffffffffffffff, 0x55ff880388f0, 0x55ff87cc1d50) = 1 _ZN14QReadWriteLock14tryLockForReadE14QDeadlineTimer(0x55ff87cc43e8, 0x7fffffffffffffff, 0x100000000, 0x7fff10f42420) = 1 _ZN14QReadWriteLock6unlockEv(0x55ff87cc43e8, 0x7fffffffffffffff, 0x55ff880388f0, 0x55ff87cc1d50) = 1 _ZN14QReadWriteLock14tryLockForReadE14QDeadlineTimer(0x55ff87cc43e8, 0x7fffffffffffffff, 0x100000000, 0x7fff10f42420) = 1 _ZN14QReadWriteLock6unlockEv(0x55ff87cc43e8, 0x7fffffffffffffff, 0x55ff880388f0, 0x55ff87cc1d50) = 1 _ZN14QReadWriteLock14tryLockForReadE14QDeadlineTimer(0x55ff87cc43e8, 0x7fffffffffffffff, 0x100000000, 0x7fff10f42420) = 1 _ZN14QReadWriteLock6unlockEv(0x55ff87cc43e8, 0x7fffffffffffffff, 0x55ff880388f0, 0x55ff87cc1d50) = 1 ... Closing every windows in that activity does not help. "systemctl --user restart plasma-kactivitymanagerd.service" does not help. What more info can I provide to get rid of this problem? I am using activities quite extensively in my work. I currently have six activities, and switch between them regularily. I do have some sshfs mappings and also use smb:// in Dolphin. Could that cause problems? -- You are receiving this mail because: You are watching all bug changes.
