microsoft / microsoft/PowerToys

Monitor (LG 27GP850-B) is not detected when turning on

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#49,045 4 comments 0 reactions 0 assignees View on GitHub

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duplicate Issue-Bug Needs-Triage Product-PowerDisplay
Dominant language
C
Stars
139k
Forks
8.6k
PR merge metrics
PR metrics pending

Description

### Microsoft PowerToys version

0.100.2

### Installation method

WinGet

### Area(s) with issue?

Power Display

### Steps to reproduce

(I have two monitors, the problem 27GP850-B is connected via DisplayPort, and an extra via DVI)
1. Power Display is running and the monitor is on
Image

2. Turn off monitor. Power Display refreshes the monitor list, removing said monitor.
Image

3. Turn monitor back on. Power Display again refreshes the list, but does not detect the 27GP850-B
Image

Manually refreshing the list from this point will always detect the monitor.

(in performing these steps just now, the monitor was correctly detected. since I began using Power Display when it was introduced, I think this is the *only* time this has worked, or just the only time i noticed it didn't break)

### ✔️ Expected Behavior

The monitor is always correctly detected when turning on.

### ❌ Actual Behavior

The monitor is sometimes not detected and listed.

### Upload Bug Report ZIP-file

(The bug report button does not create a zip file despite claiming to)

### Additional Information

Windows 11 25H2 Build 26200.8655
(not sure)
en-US
System? (from winget)
(not sure)

### Other Software

_No response_

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the Power Display monitor-refresh path and reproduce the reported sequence: turn off the LG 27GP850-B connected via DisplayPort, then turn it back on while Power Display is running. Compare the automatic refresh with a manual refresh; done means the monitor is consistently listed after being turned on, and investigate why the bug report ZIP is not generated.

Written by the indexing model from the issue text.

Assessment

Domain
desktop
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
48/100

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