ubuntu 12.04 compiz high cpu usage on multimonitor

[Alex Burdu]

$ top

top - 11:45:13 up 1 day, 12:28, 1 user, load average: 1.74, 1.77, 1.76
Tasks: 216 total, 4 running, 212 sleeping, 0 stopped, 0 zombie
Cpu(s): 16.4%us, 30.9%sy, 0.0%ni, 51.4%id, 1.0%wa, 0.0%hi, 0.3%si, 0.0%st
Mem: 7919344k total, 7577600k used, 341744k free, 1204276k buffers
Swap: 975868k total, 12k used, 975856k free, 1471132k cached

  PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
13956 ubuntu 20 0 1504m 267m 42m R 51 3.5 6:02.23 compiz
 1458 root 20 0 340m 227m 43m R 17 2.9 71:54.32 Xorg

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Stephan Wissel (stw-linux)]

top - 15:13:04 up 1 day, 15:54, 4 users, load average: 6.46, 5.23, 4.64
Tasks: 251 total, 6 running, 244 sleeping, 0 stopped, 1 zombie
Cpu(s): 53.8%us, 41.8%sy, 0.0%ni, 3.9%id, 0.2%wa, 0.0%hi, 0.3%si, 0.0%st
Mem: 8196336k total, 7885804k used, 310532k free, 405180k buffers
Swap: 0k total, 0k used, 0k free, 5125204k cached

  PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
 3864 stw 20 0 446m 126m 42m R 46 1.6 451:24.74 compiz

[Daniel van Vugt (vanvugt)]

Please:
1. Copy the attached script to your home directory
2. Open a terminal (Ctrl+Alt+T)
3. Run: sudo sh dstack compiz >> compizcpu.txt
4. Repeat #3 many times.
5. Attach "compizcpu.txt" to this bug.

[Launchpad Janitor (janitor)]

[Expired for compiz (Ubuntu) because there has been no activity for 60 days.]