Go Back   DisplayLink Forum > DisplayLink Graphics Technology > Linux and Open Source

Reply
 
Thread Tools Search this Thread Display Modes
Old 09-21-2016, 03:39 PM   #1
digiflash
Junior Member
 
Join Date: Jun 2016
Posts: 8
Default ghost images/trails of windows when moving

I installed the latest 1.2 version of the driver today.
I'm using Linux Mint 18 with Cinnamon.
When moving windows over the desktop there are ghost images of the windows.
In the earlier version my mouse had ghost trails.
digiflash is offline   Reply With Quote
Old 09-27-2016, 01:04 PM   #2
mlukaszek
Senior Member
 
mlukaszek's Avatar
 
Join Date: Feb 2010
Posts: 383
Default

Hi,

Is this also visible on a screen shot captured with Print Screen? If yes, then the compositor already messed up the framebuffers we take pixels from. If screenshot is fine, please collect logs and attach here. If it's not, try with a different window environment.

Thanks,
Michal
mlukaszek is offline   Reply With Quote
Old 09-30-2016, 01:30 PM   #3
maximih
Junior Member
 
Join Date: Sep 2016
Location: Gothenburg, Sweden
Posts: 10
Default I have the same issue

Hi

I have the same issue.

I am using Ubuntu 14.04 , with 4.4.0-38-generic kernel.

The issue happens mainly when I use Gnome 2 and the screen shot does not include the ghost windows. Actually when doing the screen shot the screen is refreshed and the ghost window disappear. They come back when I move any window.

When using Unity I cannot reproduce it but then I get 200% CPU consumed by Displaylink Manager (I have the same issue with the older drivers).

I went back to 1.1 version for now.
maximih is offline   Reply With Quote
Old 10-01-2016, 08:43 AM   #4
digiflash
Junior Member
 
Join Date: Jun 2016
Posts: 8
Default

Quote:
Originally Posted by mlukaszek View Post
Hi,

Is this also visible on a screen shot captured with Print Screen? If yes, then the compositor already messed up the framebuffers we take pixels from. If screenshot is fine, please collect logs and attach here. If it's not, try with a different window environment.

Thanks,
Michal
No then the screen is refreshed before the screenshot is taken.
digiflash is offline   Reply With Quote
Old 10-01-2016, 08:48 AM   #5
digiflash
Junior Member
 
Join Date: Jun 2016
Posts: 8
Default

Seems to be a driver issue (Intel). There a 4 messages per second in dmesg.
Due to a display-id which isn't recognized (I think less than 1).
digiflash is offline   Reply With Quote
Old 11-07-2016, 11:19 AM   #6
maximih
Junior Member
 
Join Date: Sep 2016
Location: Gothenburg, Sweden
Posts: 10
Default

Quote:
Originally Posted by digiflash View Post
Seems to be a driver issue (Intel). There a 4 messages per second in dmesg.
Due to a display-id which isn't recognized (I think less than 1).
Can you paste some examples of those messages?

I have the ghost images/trails issue with all 1.2.* drivers (not with 1.1) but I don't see any error in dmesg. You can find a screen photo here:

https://drive.google.com/file/d/0B-X...ew?usp=sharing

Thanks

Last edited by maximih; 11-07-2016 at 11:30 AM. Reason: add attachment
maximih is offline   Reply With Quote
Old 11-07-2016, 11:35 AM   #7
mlukaszek
Senior Member
 
mlukaszek's Avatar
 
Join Date: Feb 2010
Posts: 383
Default

@maximih: could you check a screenshot as well? (not the photo) It would show if the framebuffers are fine. Also, please attach the logs captured with Linux Support Tool so we know what kind of environment you have.

Cheers,
Michal
mlukaszek is offline   Reply With Quote
Old 11-07-2016, 11:48 AM   #8
maximih
Junior Member
 
Join Date: Sep 2016
Location: Gothenburg, Sweden
Posts: 10
Default

Quote:
Originally Posted by mlukaszek View Post
@maximih: could you check a screenshot as well? (not the photo) It would show if the framebuffers are fine. Also, please attach the logs captured with Linux Support Tool so we know what kind of environment you have.

Cheers,
Michal
The screenshot looks fine. The display is refreshed when the screenshot is triggered.

See attached the screenshot and the support tool output.
Attached Images
File Type: jpg Screenshot from 2016-11-07 13:47:11.jpg (10.4 KB, 1 views)
Attached Files
File Type: zip elxa7fnghc2_2016-11-07T13:40:58.647502.zip (195.9 KB, 0 views)
maximih is offline   Reply With Quote
Old 11-07-2016, 11:55 AM   #9
mlukaszek
Senior Member
 
mlukaszek's Avatar
 
Join Date: Feb 2010
Posts: 383
Default

Hmm. Can you ssh to the machine and try to capture a screen from the console? (assuming it won't redraw full screen before taking a grab).

Or, alternatively, if you're willling and have time - you could perhaps try `monitorsim` from https://github.com/mlukaszek/evdipp/. Firstly, it would show if similar corruption can be reproduced with any evdi client, but also - this makes screenshots every 10s and saves it to a PNG file.

Cheers,
Michal
mlukaszek is offline   Reply With Quote
Old 11-07-2016, 12:11 PM   #10
maximih
Junior Member
 
Join Date: Sep 2016
Location: Gothenburg, Sweden
Posts: 10
Default

Quote:
Originally Posted by mlukaszek View Post
Hmm. Can you ssh to the machine and try to capture a screen from the console? (assuming it won't redraw full screen before taking a grab).

Or, alternatively, if you're willling and have time - you could perhaps try `monitorsim` from https://github.com/mlukaszek/evdipp/. Firstly, it would show if similar corruption can be reproduced with any evdi client, but also - this makes screenshots every 10s and saves it to a PNG file.

Cheers,
Michal
I did a screenshot from the terminal using input command. The screen did not refresh in this case (so it still shows ghost images on the second and third screens to the right) but the screenshot looks ok (except some strange blue colours - my background is currently red). See attached.
Attached Images
File Type: jpg screenshot.jpg (8.1 KB, 1 views)
maximih is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 05:17 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.