ghost images/trails of windows when moving

[digiflash]

Originally Posted by mlukaszek

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]

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).

[maximih]

Originally Posted by digiflash

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

[mlukaszek]

@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

[maximih]

Originally Posted by mlukaszek

@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.

[mlukaszek]

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

[maximih]

Originally Posted by mlukaszek

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.