12-02-2015, 09:52 AM | #1 |
Junior Member
Join Date: Dec 2015
Posts: 21
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High CPU usage, Mouse flickr
Hi,
I'm running ubuntu 14.04.3 with latest kernel & Xorg: Code:
giulio@caratinga:~$ uname -r 3.19.0-37-generic giulio@caratinga:~$ X -version X.Org X Server 1.17.1 Release Date: 2015-02-10 X Protocol Version 11, Revision 0 Build Operating System: Linux 3.19.0-28-generic x86_64 Ubuntu Current Operating System: Linux caratinga 3.19.0-37-generic #42~14.04.1-Ubuntu SMP Mon Nov 23 15:13:51 UTC 2015 x86_64 Kernel command line: BOOT_IMAGE=/vmlinuz-3.19.0-37-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 Build Date: 11 September 2015 10:33:14AM xorg-server 2:1.17.1-0ubuntu3.1~trusty1 (For technical support please see http://www.ubuntu.com/support) Current version of pixman: 0.30.2 Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. I attach the result of the Linux Support Tool. Thank you |
12-14-2015, 02:57 PM | #2 |
Junior Member
Join Date: Dec 2015
Posts: 21
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I see that there's a new driver coming out, but for the moment it gives me a blank page telling me that the access is denied (see attachment). I'll try again and test it when available.
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12-15-2015, 07:25 AM | #3 |
Junior Member
Join Date: Dec 2015
Posts: 21
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Nothing seems to be changed with this new release. Still having high CPU usage from DisplayLinkManager (see attachment) processes and mouse movement still non smooth.
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01-27-2016, 08:27 AM | #4 |
Junior Member
Join Date: Jan 2016
Location: London, UK
Posts: 2
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I also see high CPU usage from DisplayLinkManager
(I'm on Ubuntu 15.10 using the latest DisplayLink driver and a USB3 to DisplayPort adapter) |
01-27-2016, 08:31 AM | #5 |
Junior Member
Join Date: Dec 2015
Posts: 21
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Same here, but nobody from DisplayLink seems to reply..
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01-27-2016, 11:47 AM | #6 |
Senior Member
Join Date: Feb 2010
Posts: 386
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Standard Ubuntu's graphical environment, Unity, causes the screen to be always reported as modified full screen, regardless of which screen changes.
That means: even if nothing changes on the screen which is connected to a docking station, we are still told by the OS to resend full screen update if anything is happening on other screen (e.g. built-in laptop screen). This gets better in other environments - Gnome3 or KDE for example. I would be interested to see if you experience the same CPU usage if you try other env. Thanks, Michal |
01-27-2016, 11:51 AM | #7 |
Junior Member
Join Date: Jan 2016
Location: London, UK
Posts: 2
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ah, interesting, thanks for the quick reply
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01-27-2016, 01:07 PM | #8 | |
Junior Member
Join Date: Dec 2015
Posts: 21
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Quote:
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01-27-2016, 03:02 PM | #9 | |
Senior Member
Join Date: Feb 2010
Posts: 386
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Quote:
Thanks, Michal |
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01-27-2016, 03:16 PM | #10 |
Junior Member
Join Date: Dec 2015
Posts: 21
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Ubuntu 14.04.3 (Unity), Intel HD Graphics 4000 GPU (driver i915)
Code:
$ lspci | grep VGA 00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) Last edited by giuliocoluccia; 01-27-2016 at 03:18 PM. |
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