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Old 09-04-2017, 09:35 AM   #1
mbokulic
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Default 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
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Old 09-06-2017, 08:42 AM   #2
Szymon
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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
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Old 09-21-2017, 03:10 AM   #3
Darren
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Default Braaaaiiiiinnsss (zombie thread)

Hi Szymon,

Fedora 26, same displaylink device, exhibits same behaviour. Log attached.
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Old 10-12-2017, 04:50 AM   #4
k001
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Quote:
Originally Posted by Szymon View Post
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).
Attached Files
File Type: zip kd_2017-10-11T20:42:24.929915.zip (4.37 MB, 2 views)

Last edited by k001; 10-12-2017 at 04:53 AM.
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Old 10-18-2017, 09:53 PM   #5
Wunsz
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Default Ubuntu 17.10 Beta 2

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.
Attached Files
File Type: zip tempest_2017-10-18T22:52:08.154304.zip (179.6 KB, 0 views)

Last edited by Wunsz; 10-18-2017 at 10:03 PM. Reason: New info
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Old 10-19-2017, 05:34 PM   #6
zombielinux
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Same issue here. Dell D6000 Dock, 130W adapter, and Latitude 7480
Attached Files
File Type: zip will-Latitude-7480_2017-10-19T12:32:36.832210.zip (3.24 MB, 0 views)
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Old 10-20-2017, 06:41 AM   #7
k001
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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
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Old 10-20-2017, 01:40 PM   #8
zombielinux
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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.
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Old 10-20-2017, 07:15 PM   #9
k001
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Quote:
Originally Posted by zombielinux View Post
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).
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Old 10-21-2017, 11:21 AM   #10
k001
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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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