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Old 04-05-2017, 06:55 PM   #1
cif2cif
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Join Date: Apr 2017
Posts: 1
Default Problems in Ubuntu 17.04

Hi,

I have upgraded to Ubuntu 17.04 and DisplayLink is not working properly (or Ubuntu ). Now the external monitor can be seen but it is frozen. It was working perfectly with Ubuntu 16.10 and Ubuntu 16.04.

Thanks in advance,
Carlos
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File Type: zip DisplayLink Linux Support Tool 1.2.17.zip (8.07 MB, 2 views)
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Old 04-12-2017, 03:47 PM   #2
diego.roccia
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Default Bump

I also have the same problem

Ubuntu 17.04 , Gnome 3.24, latest drivers

the external screen is freezed on the first frame that's drawn (99% of the time it is a black screen with only the mouse pointer)
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File Type: zip lumino_2017-04-12T16:48:27.835475.zip (199.3 KB, 3 views)

Last edited by diego.roccia; 04-12-2017 at 03:49 PM. Reason: file attached
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Old 04-15-2017, 10:40 AM   #3
sebastiaan
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Join Date: Apr 2017
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Cool Same here

After updating to Ubuntu Gnome 17.04 from Ubuntu 16.04, I experience the same issue as described above:

The DisplayLink installer works fine, and a monitor connected through my DisplayLink Docking Station is recognized and can be activated. However, the image on the monitor is not refreshed. It generally stays black, or shows a frozen image. The mouse cursors is the only thing that is visible and active on the monitor.

To check whether this issue might be due to Gnome Shell, I also tried it with Xfce4, which uses simple non-hardware accelerated graphics. But the problem is the same with Xfce4.

On Ubuntu 16.04, things worked like a charm (except for excessive CPU use).

I attached the output of the Linux Support Tool.
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File Type: zip mantis_2017-04-14T13:34:33.675812.zip (259.3 KB, 2 views)
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Old 04-26-2017, 10:51 PM   #4
dylanparry
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Default

I'm getting the same with my installation of Ubuntu 17.04. Has anyone managed to get anywhere with this? At the moment my two external monitors are completely useless and I'm having to use my laptop's in-built screen all the time.
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Old 04-28-2017, 12:58 AM   #5
He'emin
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Default For Intel Graphic Drivers

If you are using a Intel Graphic chip (I have a notebook with dual chip Nvidia/Intel), you can use this configuration:

edit /etc/X11/xorg.conf.d/20-intel.conf (Most users do not have that folder xorg.conf.d, so just create it and the file 20-intel.conf :

add this to the file:
Quote:
Section "Device"
Identifier "Intel Graphics"
Driver "Intel"
Option "AccelMethod" "sna"
Option "TearFree" "false"
Option "TripleBuffer" "true"
Option "MigrationHeuristic" "greedy"
Option "Tiling" "true"
Option "Pageflip" "true"
Option "ExaNoComposite" "false"
Option "Tiling" "true"
Option "Pageflip" "true"
EndSection
Save and reboot PC:
This worked for me, only, that my courser flashes a bit when I have high CPU load. I don't know the reason for that.

Hope that helps. Much luck.
He'emin

PS: I tried that with Ubuntu Gnome and Ubuntu Mate, both worked.
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Old 04-28-2017, 05:14 PM   #6
marwir
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Default Great solution

Quote:
Originally Posted by He'emin View Post
Hope that helps. Much luck.
He'emin
Thanks He'emin. I had the same, frozen screens. Your solution works like a charm for me. High CPU usage with this, however it works ;-).

My config:
- Fedora 26
- kernel 4.11.0-0.rc8.git0.1.fc26.x86_64
- evdi module 1.40

Thanks again!
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Old 04-29-2017, 06:37 PM   #7
dylanparry
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Default

Quote:
Originally Posted by He'emin View Post
If you are using a Intel Graphic chip (I have a notebook with dual chip Nvidia/Intel), you can use this configuration...
This has worked for me too, thanks. I'm not sure what each part of the config does, but I'm going to have a read and see if changing any bits make any difference to my particular set-up.

I notice that there are two sets of options that have been repeated (specifically tiling and pageflip)---is this intentional?

Edit:

I deleted all of the `Option` lines from the config file, and rebooted. Everything still worked! It appears that many of those are the default values, so just the presence of the file appears to set them. I also found that I was only able to see the Ubuntu login screen on the main laptop screen, but then added a file at `/etc/X11/xorg.conf.d/20-radeon.conf` (the other card in my laptop is an AMD/ATI) with settings:

Quote:
Section "Device"
Identifier "Radeon"
Driver "radeon"
EndSection
which seems to do something as the login screen now appears on my two external monitors too. I'm not sure why this worked for me, but it appears to have done something!

Last edited by dylanparry; 04-29-2017 at 07:01 PM.
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