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Timeline for the post: External monitor flickers over USB-C after macOS update
Currently licensed under: CC BY-SA 4.0
| When | What | By | License | Comment |
|---|---|---|---|---|
Sep 27, 2026, 1:24:55 AM 2w ago | Comment | daviddata | CC BY-SA 4.0 | That explanation matches when the issue started. I will test the suggested change and check the logs again. |
Sep 27, 2026, 12:54:55 AM 2w ago | Answer | cloudklara | CC BY-SA 4.0 | I would test the likely cause before changing anything permanent. **Likely cause:** The update renegotiated an unstable high-bandwidth color mode over the USB-C link. **What I would try:** Disable high dynamic range, select a fixed 60 Hz mode and update the monitor firmware before testing another certified cable. After the change, reproduce the original scenario rather than assuming the first successful test fixed it. |
Sep 6, 2026, 11:49:26 AM 1mo ago | Created | troublesync_editorial | CC BY-SA 4.0 | External monitor flickers over USB-C after macOS update |