Same here with trusty. ibus-daemon, thunderbird, ibus-ui-gtk3, compiz,
ibus-engine-sim are busy and freezing desktop.
Switch to another desktop with Ctrl-Alt-Fxx is possible, but very slow.
top output:
top - 15:50:43 up 16 days, 21:59, 8 users, load average: 8,73, 6,17, 3,25
Tasks: 477 total, 6 running, 471 sleeping, 0 stopped, 0 zombie
%Cpu(s): 19,9 us, 7,2 sy, 0,0 ni, 72,6 id, 0,1 wa, 0,1 hi, 0,0 si, 0,0 st
KiB Mem: 8068688 total, 7866640 used, 202048 free, 880 buffers
KiB Swap: 8278012 total, 1812148 used, 6465864 free. 948104 cached Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
16813 margit 20 0 709396 275956 1648 R 65,2 3,4 11:48.03 ibus-daemon
7265 margit 20 0 880644 179732 11220 R 34,0 2,2 7:39.09 thunderbird
15897 root 20 0 367452 58056 41540 S 19,8 0,7 41:59.70 Xorg
16954 margit 20 0 5092608 4,366g 4120 S 17,0 56,7 4:08.19 ibus-ui-gtk3
17398 margit 20 0 1825564 97948 6044 R 14,2 1,2 53:39.94 compiz
17284 margit 20 0 511852 316028 1520 S 11,3 3,9 1:48.83
ibus-engine-sim
9263 olaf 20 0 30772 1552 1052 R 5,7 0,0 0:00.03 top
16873 margit 20 0 637356 5576 2844 S 5,7 0,1 0:58.84 bamfdaemon
1 root 20 0 33932 1088 680 S 0,0 0,0 0:05.13 init
2 root 20 0 0 0 0 S 0,0 0,0 0:00.24 kthreadd
3 root 20 0 0 0 0 S 0,0 0,0 0:03.36 ksoftirqd/0
5 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 kworker/0:0H
7 root 20 0 0 0 0 S 0,0 0,0 0:52.43 rcu_sched
8 root 20 0 0 0 0 S 0,0 0,0 0:25.40 rcuos/0
9 root 20 0 0 0 0 S 0,0 0,0 0:25.45 rcuos/1
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https://bugs.launchpad.net/bugs/1162008
Title:
/usr/share/ibus/ui/gtk/main.py blocks at 100% when applications are
minimised
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