Providers: number : 1 in Debian Testing - XPS13 - kernel 4.18.0-2-amd64

[nllz]

Thanks a lot for this great work. Unfortunately I have some issues getting this to work.

My setup:

Dell XPS13 - HP 3005pr

$ cat /proc/version
Linux version 4.18.0-2-amd64 ([email protected]) (gcc version 7.3.0 (Debian 7.3.0-30)) #1 SMP Debian 4.18.10-2 (2018-11-02)

Installation went fine, and process is running:

$ systemctl status dlm.service
● dlm.service - DisplayLink Manager Service
   Loaded: loaded (/lib/systemd/system/dlm.service; enabled; vendor preset: enab
   Active: active (running) since Tue 2018-11-20 13:49:22 CET; 1h 15min ago
  Process: 712 ExecStartPre=/bin/sh -c modprobe evdi || (dkms install evdi/4.4.2
 Main PID: 716 (DisplayLinkMana)
    Tasks: 35 (limit: 4915)
   Memory: 36.4M
   CGroup: /system.slice/dlm.service
           └─716 /opt/displaylink/DisplayLinkManager

but unfortunately I get:

$ xrandr --listproviders
Providers: number : 1
Provider 0: id: 0x47 cap: 0xb, Source Output, Sink Output, Sink Offload crtcs: 4 outputs: 4 associated providers: 0 name:Intel

Any pointers on how I can get my two external screens to work?

[kopax]

Could you try another USB port / reboot ? I got the same results and after doing that I was able to see 2 providers.

[nllz]

Switched port and rebooted by to no avail. I think some answers might be found in this part of my log:

$ sudo dmesg | grep evdi
[   13.076935] evdi: loading out-of-tree module taints kernel.
[   13.078939] evdi: [I] Initialising logging on level 5
[   13.078940] evdi: [I] Atomic driver:no
[   13.647703] evdi: [D] evdi_add_devices:134 Increasing device count to 1
[   13.647820] evdi: [D] evdi_crtc_init:353 drm_crtc_init: 0
[   13.647979] evdi: [W] evdi_painter_crtc_state_notify:486 Painter does not exist!
[   13.647982] evdi: [D] evdi_detect:79 Painter is disconnected
[   13.647988] evdi: [W] evdi_painter_crtc_state_notify:486 Painter does not exist!
[   13.648785] [drm] Initialized evdi 1.5.1 20180731 for evdi.0 on minor 1
[   13.648786] [drm] evdi: evdi_stats_init
[   13.696180] evdi: [D] evdi_painter_connect:574 (dev=1) Connected with 000000008ee51dc6
[   13.696183] evdi: [D] evdi_detect:76 (dev=1) Painter is connected
[   13.696204] evdi: [D] evdi_painter_crtc_state_notify:483 (dev=1) Notifying crtc state: 3
[   13.696645] evdi: [D] evdi_add_devices:134 Increasing device count to 2
[   13.696756] evdi: [D] evdi_crtc_init:353 drm_crtc_init: 0
[   13.697832] evdi: [W] evdi_painter_crtc_state_notify:486 Painter does not exist!
[   13.697836] evdi: [D] evdi_detect:79 Painter is disconnected
[   13.697841] evdi: [W] evdi_painter_crtc_state_notify:486 Painter does not exist!
[   13.697926] [drm] Initialized evdi 1.5.1 20180731 for evdi.1 on minor 2
[   13.697927] [drm] evdi: evdi_stats_init
[   13.710356] evdi: [D] evdi_painter_connect:574 (dev=2) Connected with 0000000042c8b383
[   13.710359] evdi: [D] evdi_detect:76 (dev=2) Painter is connected
[   13.710485] evdi: [D] evdi_painter_crtc_state_notify:483 (dev=2) Notifying crtc state: 3

[nllz]

I also tried re-plugging and running
$ sudo systemctl restart dlm.service

[kopax]

@AdnanHodzic recommended here to try with : #172 (comment) and to post your debian version uname -a

[nllz]

working! thanks for all the fish!

[kopax]

Hey, do you mind to give some details for others ? Mine isn't working. What do you mean it work ?

[nllz]

Heya,

This is what I am on:

$ cat /proc/version
Linux version 4.18.0-2-amd64 ([email protected]) (gcc version 7.3.0 (Debian 7.3.0-30)) #1 SMP Debian 4.18.10-2 (2018-11-02)

$ lsb_release -a
No LSB modules are available.
Distributor ID:	Debian
Description:	Debian GNU/Linux testing (buster)
Release:	testing
Codename:	buster

As you suggested I did this:

$ sudo mv /etc/X11/xorg.conf.d/20-displaylink.conf ~/20-displaylink.conf

and when I then logged back into my xsession (rebooting or loggin out and in again) I got the following output:

$ xrandr --listproviders
Providers: number : 3
Provider 0: id: 0xa9 cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 3 outputs: 3 associated providers: 0 name:modesetting
Provider 1: id: 0x7a cap: 0x2, Sink Output crtcs: 1 outputs: 1 associated providers: 0 name:modesetting
Provider 2: id: 0x41 cap: 0x2, Sink Output crtcs: 1 outputs: 1 associated providers: 0 name:modesetting

Hope this helps!

[nllz]

Make sure that when you login, you are selecting from X11, not Gnome.

Click on the cogwheel drop-down menu next to the login form and select X11.

[kopax]

I don't have such kind of form on cinnamon when I login, but still, thanks a lot for the clarification.
I am confident that this will help others. @AdnanHodzic I am curious why did you recommend to move that file.

Can we know more about that fix?

What is it supposed to fix exactly? What's expected?

@nllz seems to have a different behaviour than mine, when is it appropriate to do that?

Also, it may be because of cinnamon that I can't display using my screen don't you think?

[nllz]

@kopax Are you sure you are on Debian and not on Linux Mint?

If you use Cinnamon I think you are using Wayland as display server, and DisplayLink currently only works on X11 afaik.

[AdnanHodzic]

@kopax reason I recommended to remove that file is after last pull request by @NoNeedForNames. I realized that adding this won't work for everybody, but I merged it with master anyways, as I wanted to see how it plays out.

In meantime I also wanted to add a new implementation which would add this file only if it's needed, but didn't have time to work on it yet.

Can you both (@nllz @kopax) please tell me what paste back the outputs of both:

lspci | grep -i vga
lspci -nnk | grep -i vga -A3 | grep 'in use'|cut -d":" -f2|sed 's/ //g'

[nllz]

$ lspci | grep -i vga
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 620 (rev 02)

$ lspci -nnk | grep -i vga -A3 | grep 'in use'|cut -d":" -f2|sed 's/ //g'
i915

[kopax]

$ lspci | grep -i vga
00:02.0 VGA compatible controller: Intel Corporation Device 5912 (rev 04)

$ lspci -nnk | grep -i vga -A3 | grep 'in use'|cut -d":" -f2|sed 's/ //g'
i915

[AdnanHodzic]

@nllz and everybody else with this problem, could you please pull the latest changes and run "reinstall".

[kopax]

@AdnanHodzic thanks, I've reinstalled and again, the screen is displaying, the mouse can move but can't add window to that screen. It is still "frozen" but working.

How can I help troubleshoot?

[AdnanHodzic]

You could try by Monitoring for errors

You could also look into these, as they are Debian related problems, which sound a lot like yours, maybe you can find some useful information:
#68
#130

[NoNeedForNames]

@kopax, your behavior is exactly the reason why I have built in the driver-statement in the first place. It was exactly the same behavior on my setup. What's the content of your etc/X11/xorg.conf.d/20-displaylink.conf ?

[NoNeedForNames]

@nllz which one of the driver-versions in 20-displaylink.conf is working for you ?

[AdnanHodzic]

@nllz ok problem has been fixed as part of different issue.

Please pull the latest changes and run "reinstall".

[nllz]

Everything is working for me*, which is why I closed the thread :)

see: #173 (comment)

Thanks again!