[Kernel-packages] [Bug 1744543] Re: Screen updating with Compiz causes high-CPU kworker thread in 4.13 or earlier

** Tags added: battery ** Description changed: - This duplicates the information in - https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1744515. Filing - this to get more exposure. + Originally filed under compiz: + https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1744515. Testing + indi

[Kernel-packages] [Bug 1744543] Re: Screen updating with Compiz causes high-CPU kworker thread in 4.13 or earlier

Tested, and if anything the %CPU of kworker threads is even higher, often staying around 65% in 'top'. An easy way to get the screen to update is to run glxgears, which should run at screen refresh rate with very low CPU usage. ** Tags added: kernel-bug-exists-upstream ** Changed in: linux (Ubun

[Kernel-packages] [Bug 1744543] Re: Screen updating with Compiz causes high-CPU kworker thread in 4.13 or earlier

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.15 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix t