18.04 stuck on 640x480

He'emin · 04-30-2018, 08:52 PM

Hello,

I also had only issues with Ubuntu in Gnome. Whenever I had the docking station connected I could not even login. Xorg would right away crash and push me back to the login screen.
So I tired Kubuntu and it worked, even thought the mouse flickering is worse.

He'emin

michael123 · 05-01-2018, 07:38 PM

Ubuntu 18.04 LTS includes X and Gnome now, so I'm sure DisplayLink intends to support it, instead of Kubuntu. Logging in works fine, and there's no mouse flickering.

Here's a link to the output of the support tool:

https://drive.google.com/file/d/1Q6R...ew?usp=sharing

Why are the monitors only showing 640x480 in "Displays" and xrandr?

Thanks!

smacdonald-miov · 05-28-2018, 05:04 PM

I just upgraded from Ubuntu 14.04 to 18.04 and am also awaiting DisplayLink 18.04 support.

Sparxy · 05-30-2018, 10:53 AM

This worked for me:

Code:

gtf 1920 1080 60
xrandr --newmode "1920x1080_60.00"  172.80  1920 2040 2248 2576  1080 1081 1084 1118  -HSync +Vsync
xrandr --addmode DVI-I-1-1 "1920x1080_60.00"
xrandr --output DVI-I-1-1 --mode "1920x1080_60.00"

Use the output from gtf (after Modeline) in xrandr --newmode
Replace DVI-I-1-1 with your xrandr DisplayLink output.

michael123 · 05-30-2018, 04:48 PM

Quote:

Originally Posted by Sparxy

This worked for me:

Code:

gtf 1920 1080 60
xrandr --newmode "1920x1080_60.00"  172.80  1920 2040 2248 2576  1080 1081 1084 1118  -HSync +Vsync
xrandr --addmode DVI-I-1-1 "1920x1080_60.00"
xrandr --output DVI-I-1-1 --mode "1920x1080_60.00"

Use the output from gtf (after Modeline) in xrandr --newmode
Replace DVI-I-1-1 with your xrandr DisplayLink output.

Hi Sparxy, hmmm... that didn't work.

It creates a new mode, shows the resolution in the Display settings, and appears to create a 1920x1080 buffer in Gnome.

But the DisplayLink is still showing a clipped 640x480 display of the center of that larger buffer. The monitor is still 640x480.

michael123 · 05-31-2018, 02:58 PM

The hardware has ports for HDMI and Displayport cables for each of 2 monitors.

The workaround was to replace the DisplayPort cables with HDMI cables.

The odds of 2 cables/ports going bad at the same time is astronomical, so it seems a bug in the driver or firmware.

I'm not at all happy with the support I got on this product and would not recommend DisplayLink products to anyone.

amiera · 07-12-2018, 10:19 AM

Hello,

I would like to rule out some potential misunderstandings that might have risen and hopefully gather more information on the topic.
First: do you use GNOME with Xorg or Wayland?

Second: could you confirm that the monitors are fully operational (i.e. running native resolution, correct refresh rate etc.) when connected over DP directly to another machine (without a dock).

Last but not least:
what are the monitors you use with the dock?

Best regards,
Aleksander

04-30-2018, 08:52 PM	#1
He'emin Junior Member Join Date: Apr 2017 Posts: 3	Gnome did not work, Kubuntu works Hello, I also had only issues with Ubuntu in Gnome. Whenever I had the docking station connected I could not even login. Xorg would right away crash and push me back to the login screen. So I tired Kubuntu and it worked, even thought the mouse flickering is worse. He'emin

05-30-2018, 10:53 AM	#4
Sparxy Junior Member Join Date: Jun 2016 Posts: 12	This worked for me: Code: gtf 1920 1080 60 xrandr --newmode "1920x1080_60.00" 172.80 1920 2040 2248 2576 1080 1081 1084 1118 -HSync +Vsync xrandr --addmode DVI-I-1-1 "1920x1080_60.00" xrandr --output DVI-I-1-1 --mode "1920x1080_60.00" Use the output from gtf (after Modeline) in xrandr --newmode Replace DVI-I-1-1 with your xrandr DisplayLink output.

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05-01-2018, 07:38 PM	#2
michael123 Junior Member Join Date: Apr 2018 Posts: 7	Ubuntu 18.04 LTS includes X and Gnome now, so I'm sure DisplayLink intends to support it, instead of Kubuntu. Logging in works fine, and there's no mouse flickering. Here's a link to the output of the support tool: https://drive.google.com/file/d/1Q6R...ew?usp=sharing Why are the monitors only showing 640x480 in "Displays" and xrandr? Thanks!

05-28-2018, 05:04 PM	#3
smacdonald-miov Junior Member Join Date: May 2018 Posts: 6	I just upgraded from Ubuntu 14.04 to 18.04 and am also awaiting DisplayLink 18.04 support.

05-31-2018, 02:58 PM	#6
michael123 Junior Member Join Date: Apr 2018 Posts: 7	The hardware has ports for HDMI and Displayport cables for each of 2 monitors. The workaround was to replace the DisplayPort cables with HDMI cables. The odds of 2 cables/ports going bad at the same time is astronomical, so it seems a bug in the driver or firmware. I'm not at all happy with the support I got on this product and would not recommend DisplayLink products to anyone.

07-12-2018, 10:19 AM	#7
amiera Junior Member Join Date: Jul 2018 Posts: 2	Hello, I would like to rule out some potential misunderstandings that might have risen and hopefully gather more information on the topic. First: do you use GNOME with Xorg or Wayland? Second: could you confirm that the monitors are fully operational (i.e. running native resolution, correct refresh rate etc.) when connected over DP directly to another machine (without a dock). Last but not least: what are the monitors you use with the dock? Best regards, Aleksander