Please find the libs here. I added the usual output for ldd, dmesg, lspci -vvv.

https://ferdi.naasa.net/oc/index.php/s/RC2edn5EW3kzR0D

I don't know what kind of support tool you mean. If I search in google, I can find one for Windows. I've no windows, though.

Sorry, I meant this http://support.displaylink.com/knowl...to-displaylink

Cheers,
Michal

The support tool zip:

https://ferdi.naasa.net/oc/index.php/s/d5YU6YecUxX5Q0B

Not sure if that makes sense - note that the D3100 is not attached at the moment (I'm not @home) and the DL service is disabled. If you need it to be attached, we'll have to wait until tomorrow.

The logs of what was happening may be enough. Thanks.

Michal

Any news here? Any additional information I can provide?

Can you change the displaylink manager to log in clear text - or even better: provide the source for it. That I can look for the reason myself.

Hi cpo,

Could you please provide a bit more information about the context when the problem occurs? Is it constantly eating your CPU or you observe it only in some circumstances, e.g. CPU load is significantly higher when resuming from machine suspend? Is there any specific app running? Maybe capturing a quick video on your phone would help?
I am asking as we would like to reproduce the problem internally.

Thanks,
Szymon

Hi

I have a brand new XPS 13 DE, just installed ubutu 16.04, kernel 4.4.0-24
so I can make some tests.

Indeed there is a problem with CPU. Here is my first test:

* install latest Displaylink driver 1.1.68
* test if it work with my dock D3100 + external HDMI monitor: YES!
* unplug the dock
* reboot (laptop alone, nothing is connected)
* in the terminal, "top" tells me DisplayLinkManager uses between 0% - 0.3%
so this is fine
* close the lid to suspend, re-open to wake up
* now DisplayLinkManager is steadily using 16%CPU !
(with nothing connected) So something is wrong here.

Here is the screenshot
(after resume, with nothing connected to the laptop)

[EDIT] sorry, the image has been shrunk, it's too small.; Anyway this is not important
It's just showing DisplayLinkManager at 16.9% CPU

I'm having the same problem. As soon as I plug in a single DisplayLink screen, the DisplayLinkManager CPU usage goes through the roof.

The CPU usage stays this high (around 80-100% of one logical core) as long as I keep using the screen(s).
See screenshot.

Ubuntu 16.04
kernel: 4.4.0-24-generic
DisplayLink 1.1.62

lspci:
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor DRAM Controller (rev 06)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller (rev 06)
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 04)
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)
00:19.0 Ethernet controller: Intel Corporation Ethernet Connection I217-V (rev 04)
00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d4)
00:1c.6 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #7 (rev d4)
00:1c.7 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #8 (rev d4)
00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM87 Express LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 04)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Mars [Radeon HD 8730M] (rev ff)
01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Cape Verde/Pitcairn HDMI Audio [Radeon HD 7700/7800 Series] (rev ff)
03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 73)
04:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5227 PCI Express Card Reader (rev 01)

lsusb:
Bus 002 Device 002: ID 8087:8000 Intel Corp.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:8008 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 003: ID 17e9:ff0b DisplayLink
Bus 004 Device 002: ID 17e9:ff0b DisplayLink
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 004: ID 05c8:0369 Cheng Uei Precision Industry Co., Ltd (Foxlink)
Bus 003 Device 003: ID 154b:005b PNY Flash Drive
Bus 003 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 003 Device 005: ID 8087:07dc Intel Corp.
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Edit: Added zip with output of support tool and other info.