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-   -   Dell D6000 dock resetting on Ubuntu 16.04 (https://displaylink.org/forum/showthread.php?t=65476)

mbokulic 09-04-2017 09:35 AM

Dell D6000 dock resetting on Ubuntu 16.04
 
Hi,

Every 1-2 hours (in random intervals, sometimes shorter) my two monitors stop getting a signal. If I unplug the dock they start working again. The keyboard and mouse still work though.

Hardware: Latitude 7280, D6000 dock, Dell monitors

Software: Ubuntu 16.04 (i3 window manager)

Initially the monitors didn't work at all, but started after I installed different graphics drivers (these ones)

dmesg outputs these messages:

Quote:

Disable of device-initiated U1 failed
Disable of device-initiated U2 failed
and then

Quote:

Set SEL for device-initiated U1 failed
Set SEL for device-initiated U2 failed

Szymon 09-06-2017 08:42 AM

Hi mbokulic,

Could you please gather logs and attach a zip file to this thread?
To capture these, please follow the instructions from this article:
http://support.displaylink.com/knowl...to-displaylink

Thanks,
Szymon

Darren 09-21-2017 03:10 AM

Braaaaiiiiinnsss (zombie thread)
 
1 Attachment(s)
Hi Szymon,

Fedora 26, same displaylink device, exhibits same behaviour. Log attached.

k001 10-12-2017 04:50 AM

1 Attachment(s)
Quote:

Originally Posted by Szymon (Post 84060)
Hi mbokulic,

Could you please gather logs and attach a zip file to this thread?

I have the same dock (Dell D6000) and the same symptoms (every 1h to every 10m everything goes down, including ext. displays). Logs are attached.

Update: DisplayLinkManager crashes that are inside the report are not related to this case (but would be worth investigating nevertheless).

Wunsz 10-18-2017 09:53 PM

Ubuntu 17.10 Beta 2
 
1 Attachment(s)
Dell XPS 15 9560 + Dell D6000 @ Ubuntu 17.10 Beta 2 (Gnome @ Xorg)

Random dock disconnect (everything). Re-connecting fixes the issue. Attaching log after 2 disconnects.

EDIT: My bad, only display goes black.

zombielinux 10-19-2017 05:34 PM

1 Attachment(s)
Same issue here. Dell D6000 Dock, 130W adapter, and Latitude 7480

k001 10-20-2017 06:41 AM

I found a way to bring a display back to life if it's off but available from xrandr output. You need to say something like
Code:

xrandr --output DVI-I-2-2 --auto
It works, but unfortunately I have to rearrange displays after that. Something like
Code:

xrandr --output DVI-I-2-2 --right-of eDP1
xrandr --output DVI-I-1-1 --right-of DVI-I-2-2


zombielinux 10-20-2017 01:40 PM

If you use arandr, you can save the monitor config. It saves as a .sh so you just get to re-execute that script and it will re-arrange your monitors.

Handy for having multiple configurations that you use and scripting between them with udev.

k001 10-20-2017 07:15 PM

Quote:

Originally Posted by zombielinux (Post 84468)
If you use arandr, you can save the monitor config. It saves as a .sh so you just get to re-execute that script and it will re-arrange your monitors.

Handy for having multiple configurations that you use and scripting between them with udev.

In my case, gnome is supposed to take care of it. Unfortunately, display device names (IDs) are changing sometimes after a reboot (or replug), so it fails to do its job and I have to use xrandr. And yes, I ended up saving this to a script (need to think about how to handle changing IDs).

k001 10-21-2017 11:21 AM

My earlier advise about using xrandr is not working for me either :( I now have monitors shown as on in xrandr, but they are in fact in power saving mode. All this happens once in a while, when a message appears in kernel logs:

Code:

[18125.523348] usb 4-1.1: Disable of device-initiated U1 failed.
[18125.530395] usb 4-1.1: Disable of device-initiated U2 failed.
[18125.530508] cdc_ncm 4-1.1:1.5 enx9cebe8554690: unregister 'cdc_ncm' usb-0000:39:00.0-1.1, CDC NCM
[18125.582824] usb 4-1.1: Set SEL for device-initiated U1 failed.
[18125.589806] usb 4-1.1: Set SEL for device-initiated U2 failed.

This seems like a device wants to sleep, and the kernel can't prevent it and is losing it. Nevertheless, in a moment it brings itself back to life, with everything connected though it working -- except, alas, for the monitors.


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