Ubuntu 18.04, D6000 and Displaylink Release 5.3.1
 

I have always used the displaylink drivers with a Dell D6000 and an Ubuntu laptop. All versions before release 5.3.1. would fail and some point the connected display would go black and stay that way, the mouse would flicker and would stay like that. Only way to fix it was to pull the usb-c out and put it back in.

With the current release it has gotten better ,the connected display still goes black but returns after 3-5 seconds, it disconnects the network, but connects again. This is particularly bad when being in videocalls, but it has improved the time I can spend on the bigger display a lot. Also when I use a cable e.g. displayport to usb-c this issue doesn't arise.

Just wanted to add that release 5.3.1. is a lot better then the releases before and hoping it will get better in the short time.

I was also wondering where I can add my logs and feedback, so the bug fixing on the crashes can improve. If someone can point me in the right direction with issues and logs that would be helpful

Regarding the blackouts there is a workaround. It works for me and I have the same setup (D6000):

You need to comment out "load-module module-suspend-on-idle" in /etc/pulse/default.pa:

#load-module module-suspend-on-idle

However, are you not affected with the slowness bug when you close the laptop screen?

Hi all,

I am affected by the slowness bug, when I close the lid of the laptop and work on two external monitors. This seems to be a bug in the evdi component (there's a bug report on github).

since the latest displaylink version I get kicked out of my X-Session various times. This is reproducible/repeatable.

I was wondering, which version of evdi and which version of displaylink are you using?

Hello Ilhan,

Thank you for contacting our support.

I would recommend updating your D6000 firmware. It can be unfortunately only done on the Windows machine.

Please follow this link.
Please remember to perform the update without any device connected to D6000.

After the upgrade please verify the issue on your Ubuntu machine and let me know about the outcome.

Best regards,
Jakub

Hello Jakub, I think I did that at some point. As the latest firmware dates back to 24 Jun 2019. I haven been trying to find how check my firmware version of the dock on my linux machine, just be sure.

Hi Jakub,

I already have the latest firmware installed, it doesn't change anything. And as you can see in the forums it's not only this dock that has those problems, it is a generic issue.

Thnaks for the fix :)
 

Thanks for this. I can confirm the above fix is working for me - though I never close the lid.

Previously the external monitors and connection would drop out. WFH on a call was frustrating!

My config:
- Dell Latitude 7490
- Dell D6000 dock
- 2 * Dell u2515h monitors
- Ubuntu Mate 20.04 LTS

Thanks again.

Dear users,

I would like to shed some light on this issue that you are experiencing.

The issue started some time ago and we have verified that it has been coming from the system itself and not from our driver.

Firstly, it was needed to re-plug the device and it was also our fix for this issue. Right now we have changed it and the re-plug is not needed anymore but the screen may blink for maximum few seconds and it happens automatically which was not the case with a re-plug.

Secondly, we are planning in the future releases for Ubuntu drivers to get the option to disable U1/U2 so the device will never get into this state and hence the blink or re-plug will not be needed.

Thank you very much for your patience and cooperation. We do greatly appreciate your feedback and activeness here on the forum.

If you would have any questions, feel free to post them here or write on this email address: technical_enquiries@displaylink.com

Best regards,
Jakub

Same here, been working a full day with the display hooked on the D6000 and it didn't switch off once. Thank you.

Hi Jakub,

when can we expect some fix for this?

Thank you!

Hi,

don't know how it is for others, but for me the issue seems to be fixed. Can close my lid and still system is responsive...

I guess some recent Ubuntu patch fixed it again?

Same Setup (18.04, D6000, 5.3.1), similar issues
 

[UPDATE2]
I've applied both the firmware update to the D6000 and had previously applied the change to /etc/pulse/default.pa. I did not re-install the driver since updating the firmware as I assume that would not be necessary, correct?

Unsure if this helps, but systemctl reports this for upower:


● upower.service - Daemon for power management
Loaded: loaded (/lib/systemd/system/upower.service; disabled; vendor preset: enabled)
Active: active (running) since Tue 2020-06-02 11:18:54 EDT; 13min ago
Docs: man:upowerd(8)
Main PID: 4069 (upowerd)
Tasks: 3 (limit: 4915)
CGroup: /system.slice/upower.service
└─4069 /usr/lib/upower/upowerd

Jun 02 11:29:53 porsche upowerd[4069]: unhandled action 'unbind' on /sys/devices/pci0000:00/0000:00:1c.0/0000:03:00.0/0000:04:02.0/0000:39:00.0/usb4/4-2/4-2.1/4-2.1:1.3
Jun 02 11:29:53 porsche upowerd[4069]: unhandled action 'unbind' on /sys/devices/pci0000:00/0000:00:1c.0/0000:03:00.0/0000:04:02.0/0000:39:00.0/usb4/4-2/4-2.1/4-2.1:1.4
Jun 02 11:29:53 porsche upowerd[4069]: unhandled action 'unbind' on /sys/devices/pci0000:00/0000:00:1c.0/0000:03:00.0/0000:04:02.0/0000:39:00.0/usb4/4-2/4-2.1/4-2.1:1.2
Jun 02 11:29:53 porsche upowerd[4069]: unhandled action 'unbind' on /sys/devices/pci0000:00/0000:00:1c.0/0000:03:00.0/0000:04:02.0/0000:39:00.0/usb4/4-2/4-2.1/4-2.1:1.6
Jun 02 11:29:53 porsche upowerd[4069]: unhandled action 'unbind' on /sys/devices/pci0000:00/0000:00:1c.0/0000:03:00.0/0000:04:02.0/0000:39:00.0/usb4/4-2/4-2.1/4-2.1:1.5
Jun 02 11:29:54 porsche upowerd[4069]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:1c.0/0000:03:00.0/0000:04:02.0/0000:39:00.0/usb4/4-2/4-2.1/4-2.1:1.3
Jun 02 11:29:54 porsche upowerd[4069]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:1c.0/0000:03:00.0/0000:04:02.0/0000:39:00.0/usb4/4-2/4-2.1/4-2.1:1.4
Jun 02 11:29:54 porsche upowerd[4069]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:1c.0/0000:03:00.0/0000:04:02.0/0000:39:00.0/usb4/4-2/4-2.1/4-2.1:1.6
Jun 02 11:29:54 porsche upowerd[4069]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:1c.0/0000:03:00.0/0000:04:02.0/0000:39:00.0/usb4/4-2/4-2.1/4-2.1:1.2
Jun 02 11:29:54 porsche upowerd[4069]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:1c.0/0000:03:00.0/0000:04:02.0/0000:39:00.0/usb4/4-2/4-2.1/4-2.1:1.5



[UPDATE]
I didn't see the responses that this may have been addressed until I was in the middle of this post. How do I go about applying the fix? Is there a pre-release download link somewhere?


[ORIGINAL POST]
... on a Dell Precision 7530 with 1 HDMI display connected to the laptop, 2 DisplayPort displays connected to the dock.

This is extremely disruptive / distracting!!

Things only seem to affect the 2 displays connected to the dock and never the one connected to the laptop. I keep the built-in display off.

I've managed to mitigate somewhat the worst of the issues to the point where I get periodic blanking like just the two screens are trying to go into low power mode, but there is no reason for them to. Also, this shows up in dmesg when it happens:


kern :warn : [Tue Jun 2 10:03:39 2020] usb 4-2.1: Disable of device-initiated U1 failed.
kern :warn : [Tue Jun 2 10:03:39 2020] usb 4-2.1: Disable of device-initiated U2 failed.
kern :info : [Tue Jun 2 10:03:39 2020] cdc_ncm 4-2.1:1.5 enx9cebe8905883: unregister 'cdc_ncm' usb-0000:3a:00.0-2.1, CDC NCM
kern :warn : [Tue Jun 2 10:03:39 2020] usb 4-2.1: Set SEL for device-initiated U1 failed.
kern :warn : [Tue Jun 2 10:03:39 2020] usb 4-2.1: Set SEL for device-initiated U2 failed.
kern :info : [Tue Jun 2 10:03:39 2020] usb 4-2.1: reset SuperSpeed USB device number 9 using xhci_hcd
kern :warn : [Tue Jun 2 10:03:39 2020] usb 4-2.1: Warning! Unlikely big volume range (=767), cval->res is probably wrong.
kern :warn : [Tue Jun 2 10:03:39 2020] usb 4-2.1: [4] FU [Mic Capture Volume] ch = 2, val = -4592/7680/16
kern :warn : [Tue Jun 2 10:03:39 2020] usb 4-2.1: Warning! Unlikely big volume range (=672), cval->res is probably wrong.
kern :warn : [Tue Jun 2 10:03:39 2020] usb 4-2.1: [7] FU [Dell USB Audio Playback Volume] ch = 6, val = -10752/0/16
kern :info : [Tue Jun 2 10:03:39 2020] cdc_ncm 4-2.1:1.5: MAC-Address: xx:xx:xx:xx:xx:xx
kern :info : [Tue Jun 2 10:03:39 2020] cdc_ncm 4-2.1:1.5: setting rx_max = 16384
kern :info : [Tue Jun 2 10:03:39 2020] cdc_ncm 4-2.1:1.5: setting tx_max = 16384
kern :info : [Tue Jun 2 10:03:39 2020] cdc_ncm 4-2.1:1.5 usb0: register 'cdc_ncm' at usb-0000:3a:00.0-2.1, CDC NCM, xx:xx:xx:xx:xx:xx
kern :warn : [Tue Jun 2 10:03:39 2020] usb 4-2.1: usbfs: process 10976 (ActiveCommandQu) did not claim interface 0 before use
kern :info : [Tue Jun 2 10:03:39 2020] cdc_ncm 4-2.1:1.5 enx9cebe8905883: renamed from usb0
kern :info : [Tue Jun 2 10:03:39 2020] IPv6: ADDRCONF(NETDEV_UP): enx9cebe8905883: link is not ready
kern :info : [Tue Jun 2 10:03:39 2020] IPv6: ADDRCONF(NETDEV_UP): enx9cebe8905883: link is not ready
kern :info : [Tue Jun 2 10:03:39 2020] cdc_ncm 4-2.1:1.5 enx9cebe8905883: network connection: disconnected

Please help!