Public bug reported: Hi,
I'm running Ubuntu 18.04 Bionic daily with proposed updates enabled. I am using gnome-flashback (gnome-panel) with Compiz and am getting high CPU loads attributed to Compiz. That is, Compiz is permanently hovering at around 10..50% and peaking at 800%. Considering my H/W specs below, this appears a bit "unusual". CPU usage is peaking when resizing desktop windows and scrolling pages in Firefox. Important hint: When I check GPU usage with intel-gpu-tools, the GPU seems to be idling, with GPU frequency at minimum and GPU usage staying at 0% even when doing wild window resizes. On my Ubuntu 16.04 (see below), this will get me up to 20..30% GPU usage. H/W: CPU: Core i7-7700k @ 5GHz GPU: Using Intel IGP (HD630) RAM: 16GB DDR4 SSD: Intel Optane S/W: $ cat /proc/version Linux version 4.15.0-11-generic (buildd@lgw01-amd64-016) (gcc version 7.3.0 (Ubuntu 7.3.0-5ubuntu1)) #12-Ubuntu SMP Fri Feb 23 18:39:58 UTC 2018 $ lspci -nnk | grep -iA2 vga 00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 630 [8086:5912] (rev 04) Subsystem: Gigabyte Technology Co., Ltd HD Graphics 630 [1458:d000] Kernel driver in use: i915 $ modinfo i915 srcversion: 4963AD5BD78D754BBD09EAF name: i915 vermagic: 4.15.0-11-generic SMP mod_unload signat: PKCS#7 $ dpkg -l | grep compiz ii compiz 1:0.9.13.1+18.04.20180302-0ubuntu1 $ dpkg -l | grep xserver-xorg-video-intel ii xserver-xorg-video-intel 2:2.99.917+git20171229-1 amd64 $ dpkg -l | grep xorg ii xorg 1:7.7+19ubuntu5 amd64 $dpkg -l | grep mesa ii libegl1-mesa:amd64 18.0.0~rc4-1ubuntu3 I also tried todays latest GFX drivers from the oibaf ppa, but that did not make any difference. On another Ubuntu 16.04 install, I'm running compiz 1:0.9.12.3+16.04.20171116-0ubuntu1 without any issues. Cheers, r. ** Affects: compiz (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of compiz packagers, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/1753057 Title: Compiz causing high CPU load in Ubuntu 18.04 Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1753057/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : compiz@lists.launchpad.net Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp