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Old 09-21-2016, 04:39 PM   #1
digiflash
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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.
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Old 09-27-2016, 02:04 PM   #2
mlukaszek
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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
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Old 09-30-2016, 02:30 PM   #3
maximih
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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.
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Old 10-01-2016, 09:43 AM   #4
digiflash
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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.
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Old 10-01-2016, 09:48 AM   #5
digiflash
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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).
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Old 11-07-2016, 12:19 PM   #6
maximih
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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 12:30 PM. Reason: add attachment
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Old 11-07-2016, 12:35 PM   #7
mlukaszek
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@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
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Old 11-07-2016, 12:48 PM   #8
maximih
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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)
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Old 11-07-2016, 12:55 PM   #9
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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
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Old 11-07-2016, 01:11 PM   #10
maximih
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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.
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File Type: jpg screenshot.jpg (8.1 KB, 1 views)
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