could not set the configuration for crtc 394

Hello,
Sometimes when I boot the system.
There will be dialog like Attachments file dialog.png
showing “Could not apply the stored configuration for monitors could not set the configuration for crtc 394”
I think it may not fatal because this just happens a few times and I can just close this dialog or reboot the system and it is gone.
But I still want to know what is “crtc 394”?
or if I can disable this dialog showing up?

Thanks!
dialog.png

Tim2016,

It looks like an issue to monitor. Could you see this issue with different monitor?

Also, there are similar issues over external ubuntu forum.

For example,
https://ubuntuforums.org/showthread.php?t=1835391

Hi Tim2016,

Have you clarified the cause? Is it monitor issue?
Is there any further support required?

Thanks