i have multiple instances of ibus-x11 running simultaneously in Bionic 18.04. Up to 40% of CPU is used by them. Once i run htop, the processes automatically disappear a few seconds later and everything goes back to normal. In fact, i run htop now after every boot to deal with the problem. If i use System Activity (KDE) instead of htop, i see one entry, systemd, using up to 40% of CPU. If i kill it from there, it will reappear few minutes later.
System: Host: MyLinuxPC Kernel: 4.15.0-20-generic x86_64 bits: 64 Desktop: KDE Plasma 5.12.4 Distro: Ubuntu 18.04 LTS CPU: 8 core AMD FX-8320 Eight-Core (-MCP-) cache: 16384 KB Graphics: Card: Advanced Micro Devices [AMD/ATI] Ellesmere [Radeon RX 470/480] Display Server: x11 (X.Org 1.19.6 ) drivers: ati,amdgpu (unloaded: modesetting,fbdev,vesa,radeon) Resolution: 2560x1440@59.95hz OpenGL: renderer: AMD Radeon RX 480 Graphics (POLARIS10 / DRM 3.23.0 / 4.15.0-20-generic, LLVM 6.0.0) version: 4.5 Mesa 18.0.0-rc5 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to ibus in Ubuntu. https://bugs.launchpad.net/bugs/1766503 Title: ibus-* randomly use high CPU Status in ibus package in Ubuntu: Confirmed Bug description: ibus-* randomly use high CPU in Ubuntu 18.04 In fact, I think it's now using more CPU overall than the shell itself is to redraw a 4K screen: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 3308 dan 20 0 4009804 192676 84804 R 45.7 2.4 1:13.65 gnome-shell 3352 dan 20 0 384364 26796 20552 S 13.9 0.3 0:22.81 ibus-x11 3372 dan 20 0 217944 10620 7764 S 10.9 0.1 0:16.20 ibus-engin+ 3350 dan 20 0 293828 10384 7516 R 10.6 0.1 0:16.54 ibus-dconf 3346 dan 20 0 374572 11944 8268 S 10.3 0.1 0:15.93 ibus-daemon ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: ibus 1.5.17-3ubuntu4 ProcVersionSignature: Ubuntu 4.15.0-19.20-generic 4.15.17 Uname: Linux 4.15.0-19-generic x86_64 ApportVersion: 2.20.9-0ubuntu6 Architecture: amd64 Date: Tue Apr 24 15:29:07 2018 InstallationDate: Installed on 2017-12-12 (133 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20171211) SourcePackage: ibus UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ibus/+bug/1766503/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp