After moving the mouse, to exit the screensaver and use the computer (usually if the computer has been in screensaver mode for several hours) a black window briefly appears in the same location on the screen. It disappears after a few seconds.
Where can I find the source of this black window to fix this screensaver issue?
macOS: Sequoia 15.4.1
[Re-Titled by Moderator]
Mac Studio, macOS 15.4
leroydouglas,
Thank you! I appreciate your help. Sorry it took a few days to resolve the issue—but we did it. Even in Safe Boot, the problem persisted, which told me an app might be the cause. I reviewed the apps running at startup and began narrowing things down. I deleted anything unnecessary from the "Open at Login" list and then disabled each remaining app one by one, testing to reproduce the issue.
Success: I found the culprit.
I had installed the Logi Options+ app to customize function keys and mouse buttons for use as shortcuts in Chief Architect. Since Logi Options+ requires an internet connection, I reached out to Logitech to see if there was an offline version. They said no.
After intense research, I found it:
Logitech Options Offline Installer
This is what I’m now using. Once I disabled, the black window issue disappeared.
I'll be contacting Logitech to report this bug. I prefer the offline version because when the internet goes out, the programmed buttons otherwise stop working.
Thanks again!
leroydouglas,
Thank you! I appreciate your help. Sorry it took a few days to resolve the issue—but we did it. Even in Safe Boot, the problem persisted, which told me an app might be the cause. I reviewed the apps running at startup and began narrowing things down. I deleted anything unnecessary from the "Open at Login" list and then disabled each remaining app one by one, testing to reproduce the issue.
Success: I found the culprit.
I had installed the Logi Options+ app to customize function keys and mouse buttons for use as shortcuts in Chief Architect. Since Logi Options+ requires an internet connection, I reached out to Logitech to see if there was an offline version. They said no.
After intense research, I found it:
Logitech Options Offline Installer
This is what I’m now using. Once I disabled, the black window issue disappeared.
I'll be contacting Logitech to report this bug. I prefer the offline version because when the internet goes out, the programmed buttons otherwise stop working.
Thanks again!
rskern wrote:
After moving the mouse, to exit the screensaver and use the computer (usually if the computer has been in screensaver mode for several hours) a black window briefly appears in the same location on the screen. It disappears after a few seconds.
Where can I find the source of this black window to fix this screensaver issue?
macOS: Sequoia 15.4.1
https://discussions.apple.com/content/attachment/cce9c8f9-8a10-4a4a-a301-5171f7543b06
Have not seen this before posted as an issue here...
Glitches like these are hard to pinpoint..let alone resolve with confidence.
You can try A SafeBoot Start up your Mac in safe mode - Apple Support to sort anomalies
Login and test. Reboot as normal and test. Caches get rebuilt automatically.
no resolve—
To be proactive you can file a bug report / submit your Apple Feedback here: Product Feedback - Apple
—You can always try changing the screensaver to something else and compare your results
— you can try reinstalling the macOS on top of the existing macOS
How to reinstall macOS - Apple Support
How can I stop the black window after screensaver on Mac?
