Just after finished previous comment, gnome-calculator crashed ( most probably related to CTRL-z ) .
>From syslog : Sep 11 10:44:58 valyelitebook kernel: [1645692.175240] traps: gnome-calculato[9355] trap int3 ip:7f302aceeea1 sp:7ffca1a8ae90 error:0 in libglib-2.0.so.0.5600.4[7f302ac9d000+114000] Sep 11 10:44:58 valyelitebook systemd[1]: Started Process Core Dump (PID 13784/UID 0). Sep 11 10:44:58 valyelitebook systemd-coredump[13785]: Process 9355 (gnome-calculato) of user 1002 dumped core.#012#012Stack trace of thread 9355:#012#0 0x00007f302aceeea1 n/a (libglib-2.0.so.0)#012#1 0x00007f302acf1819 g_log_writer_default (libglib-2.0.so.0)#012#2 0x00007f302acefa8e g_log_structured_array (libglib-2.0.so.0)#012#3 0x00007f302acf04ce g_log_structured_standard (libglib-2.0.so.0)#012#4 0x00007f3029eabc41 n/a (libgdk-3.so.0)#012#5 0x00007f3029eb8ac3 n/a (libgdk-3.so.0)#012#6 0x00007f30279068fa _XError (libX11.so.6)#012#7 0x00007f302790382b n/a (libX11.so.6)#012#8 0x00007f30279038d5 n/a (libX11.so.6)#012#9 0x00007f3027904830 _XReply (libX11.so.6)#012#10 0x00007f30276ba004 XIGetClientPointer (libXi.so.6)#012#11 0x00007f3029ea7030 n/a (libgdk-3.so.0)#012#12 0x00007f3029ea85a4 n/a (libgdk-3.so.0)#012#13 0x00007f3029eb3810 n/a (libgdk-3.so.0)#012#14 0x00007f3029eb3329 n/a (libgdk-3.so.0)#012#15 0x00007f3029e7dd70 gdk_display_get_event (libgdk-3.so.0)#012#16 0x00007f3029eb2f82 n/a (libgdk-3.so.0)#012#17 0x00007f302ace9417 g_main_context_dispatch (libglib-2.0.so.0)#012#18 0x00007f302ace9650 n/a (libglib-2.0.so.0)#012#19 0x00007f302ace96dc g_main_context_iteration (libglib-2.0.so.0)#012#20 0x00007f3029928efd g_application_run (libgio-2.0.so.0)#012#21 0x00005613cd84fbd3 n/a (gnome-calculator)#012#22 0x00007f30286c9b97 __libc_start_main (libc.so.6)#012#23 0x00005613cd84de3a n/a (gnome-calculator)#012#012Stack trace of thread 9358:#012#0 0x00007f30287bccf9 __GI___poll (libc.so.6)#012#1 0x00007f302ace95c9 n/a (libglib-2.0.so.0)#012#2 0x00007f302ace96dc g_main_context_iteration (libglib-2.0.so.0)#012#3 0x00007f30173bc36d n/a (libdconfsettings.so)#012#4 0x00007f302ad11175 n/a (libglib-2.0.so.0)#012#5 0x00007f302821e6db start_thread (libpthread.so.0)#012#6 0x00007f30287c9a3f __clone (libc.so.6)#012#012Stack trace of thread 9356:#012#0 0x00007f30287bccf9 __GI___poll (libc.so.6)#012#1 0x00007f302ace95c9 n/a (libglib-2.0.so.0)#012#2 0x00007f302ace96dc g_main_context_iteration (libglib-2.0.so.0)#012#3 0x00007f302ace9721 n/a (libglib-2.0.so.0)#012#4 0x00007f302ad11175 n/a (libglib-2.0.so.0)#012#5 0x00007f302821e6db start_thread (libpthread.so.0)#012#6 0x00007f30287c9a3f __clone (libc.so.6)#012#012Stack trace of thread 9357:#012#0 0x00007f30287bccf9 __GI___poll (libc.so.6)#012#1 0x00007f302ace95c9 n/a (libglib-2.0.so.0)#012#2 0x00007f302ace9962 g_main_loop_run (libglib-2.0.so.0)#012#3 0x00007f3029955276 n/a (libgio-2.0.so.0)#012#4 0x00007f302ad11175 n/a (libglib-2.0.so.0)#012#5 0x00007f302821e6db start_thread (libpthread.so.0)#012#6 0x00007f30287c9a3f __clone (libc.so.6) -- 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 GNOME Shell: Unknown Status in The Ubuntu Power Consumption Project: Confirmed Status in gnome-shell package in Ubuntu: Opinion 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/gnome-shell/+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
