High CPU load (D3100 Ubuntu 15.04)

[mlukaszek]

Thanks for your reports.

Again, it would be useful if someone could attach a dump from DisplayLinkManager process so we can investigate - see my comment above.

Cheers,
Michal

[R.E.L]

Hi together,

I have an Ubuntu 14.04 trusty up to-date. An Year ago my DisplayLink was working with a lot of changes in the udev. Then I don't need the second display using DisplayLink. Now I have a need to use the second display. It now does not work.

So I investigate and found the new DisplayLink driver for Ubuntu and installed them. First it doesn't work because I had kernel 3.13.0-45. I Installed LTS wily kernel 4.2.0-35. After some display settings it works with a many crashes an always an poor performance. The mouse moves very slow and tipping an character takes seconds.

I take a deep look at it and found a solution:

• sudo displaylink-installer uninstall

• Remove my old DisplayLink udev entries

• create a file /etc/modprobe.d/98_no_udl.conf with data: blacklist udl

• reboot

• run install

• sudo ./displaylink-driver-1.0.335.run

Now the DisplayLink display and my primary display working without any problem.

Hope this helps You to regards Rainer

[cpo]

Same issue here. Please find the core dump from DisplayLinkManager. Uncompressed size is 2.4GB.

https://ferdi.naasa.net/oc/index.php/s/PX1lFi2sZFmNkqS

Additionally I'm getting logged off when I plug in the D3100 for the first time, I've two mouse cursors - one static and one which is flickering.

When the D3100 is attached during system startup, the secondary screen stays black and I've a couple of kernel stacktraces in the journal. Looks like these: https://github.com/DisplayLink/evdi/issues/28

[mlukaszek]

@cpo: Can you attach the output of the support tool, so we can know more details of your setup?

Edit: and it would also be great if you could attach an archive with all the libraries that DisplayLinkManager would link to at runtime (i.e. everything that you see mentioned in the output of ldd /usr/lib/displaylink/DisplayLinkManager), otherwise it would be hard to read anything from the dump without installing rawhide somewhere I guess.

Thanks
Michal

[cpo]

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.

[mlukaszek]

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

Cheers,
Michal

[cpo]

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.