XPS 13 9300 and WD19TB linux problem

Hi, 

This is Geoffrey from Dell social media support team. I will be glad to assist you. Could you please share the details via a private conversation? 

I don't know why but I cant send you a private message ( message limit reached )
Dock WD19TB 
XPS 13 9300 

Hi,

I have replied to you from a private message. I also recommend you to delete your public post containing the Service tags for security reasons.

not so fast...  it reboots and logs in correctly but still does not recover from suspend correctly.

This kernel fixes all my issues with the external monitor.

$ uname -a
Linux lt9 5.8.0-44-generic #50~20.04.1-Ubuntu SMP Wed Feb 10 21:07:30 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

BIOS version is 1.4.1 which I obtained Dec 10, 2020.

Using xfce.

Hi,

I'm also struggling with WD19TB with Ubuntu and 9300!

At the time of writing this, I have two Dell monitors connected to WD19TB using displayport and dock connected to the laptop via USB-C

Problems:

• At boot, the dock doesn't recognize the displays. So I have to do it in order. Disconnect laptop from Dock, boot laptop on battery, once logged into Ubuntu, connect USB-C to laptop and reconfigure display settings in Ubuntu
• At sleep; if laptop goes into sleep mode, the screens won't come back. So I have to disconnect the dock from laptop, login to laptop, wait few seconds and then connect USB-C cable from dock to laptop
• Random disconnections; I could be on a teams/zoom/slack call, laptop will randomly disconnect the dock from the laptop, it might sometimes reconnect or not

I'm running
- 20.04
- 5.8.0-44-generic
- firmware 1.4.1

Dell, please sort it out. All of this was working with 20.04, 9370 XPS laptop and same dock
Cheers

There's a new firmware update today. 

Let's hope it will change things...

Hi, we are waiting for your reply to our previous message.

Geoffrey

Just installed the firmware for the dock from 01.00.14.01 to 01.00.15.01.

I had my dual 27'' screen setup down to only one by bypassing the dock altogether with an TB->DP adapter, because i just could not work at all with all the flickers. Now i reattached both screens (DP-Adapter and directly to the dock) and i had no flicker since (fingers crossed)

To be honest i do not dare to restart the laptop or the dock for now But i'll post a follow up in a couple of days.

One thing for all of you guys - pay attention to how the TB cable is attached to your XPS. I noticed, that the dock starts to behave strangely, when the cable is not attached 100%. Having even the slightest tild to the side will start sudden disconnects and stuff. I had the laptop in a vertical laptop stand and just the weight of the cable was enough.

Reply in page 6 of this thread has fixed the issue for me

https://www.dell.com/community/XPS/XPS-13-9300-and-WD19TB-linux-problem/td-p/7644488/page/6

```GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.enable_dp_mst=0"```

I am the author of that post referenced by goldser. Note that disabling DP MST is not required from Linux kernel 5.10.16 and above.

That new firmware changed nothing for me
After maybe 5 minutes of use, my external screen blink randomly without any information in dmsg...

I have an other problem with this dock:

I use Pop_Os! with an Encrypted disk. Which means that system ask me the password to dis-encrypt partition at each boot.
So, my laptop is off, lid is closed, and it is plugged to the dock. I power up the XPS by pressing the dock button.

After few seconds, it is supposed to ask me for the password (for dis-encrypt the partition). Sometimes, but very rarely, it effectively display this prompt but in the most of case, I need to type my password without see anything on my external display....

I really hope Dell will do something for theses 2 problems (at least the first I describe !).

Same here.  After updating to WD19FirmwareUpdateLinux_01.00.15.cab my single external display and the laptop display both repeatedly went black and then recovered. So, I reverted to WD19FirmwareUpdateLinux_01.00.14.cab and all is stable again.  Perhaps I should have rebooted the laptop to see if that fixed things.  uname -a:  Linux lt9 5.8.0-44-generic #50~20.04.1-Ubuntu SMP Wed Feb 10 21:07:30 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux.

Well, so far so good.  Installed WD19FirmwareUpdateLinux_01.00.15.cab again and now there are no blackouts with one external DP monitor.

Am I the only one with the official Dell XPS 9300 ubuntu version?

I'm on Kernel 5.4 still...

Seems like upgrading to a newer kernel might solve my issues