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Issue 707964 link

Starred by 3 users
Status: Duplicate
Merged: issue 656730
Owner: ----
Closed: Apr 2017
Cc:
kylixrd@chromium.org
malaykeshav@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Windows
Pri: 2
Type: Bug



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Black border when using multi monitors with different DPI and different scaling

Reported by treval...@gmail.com, Apr 3 2017 
UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36

Steps to reproduce the problem:
1. Two monitors with different scaling, one 250%, one 100%
2. Have Chrome running, then minimize the window
3. Open the Chrome window again, and black bars appear

What is the expected behavior?
The window area should fit tight to the edges of the screen and fit to the edge of the Windows task bar

What went wrong?
The UI below the tabs is sized incorrectly. 

Did this work before? N/A 

Chrome version: 57.0.2987.133  Channel: stable
OS Version: 10.0
Flash Version: 

If you make your Chrome window no longer full screen and then maximize it again, then the UI snaps to the right size again until Chrome is minimized again, then the issue occurs all over again.
Chrome Black Border.jpg
108 KB View Download

Comment 1 by treval...@gmail.com, Apr 3 2017 

It also seems like the larger the scaling difference, the bigger the black bars. I previously had two 1080p monitors, but one scaled 150% the other 100%. I had the same black bars, but they were much smaller than they are now on the current 250% + 100% scaling setup.

Comment 2 by robliao@chromium.org, Apr 3 2017

Components: UI>HighDPI

Comment 3 by danakj@chromium.org, Apr 3 2017

Owner: osh...@chromium.org
Status: Assigned (was: Unconfirmed)
It seems like rounding gone horribly wrong maybe. oshima@ can you triage please?

Comment 4 by robliao@chromium.org, Apr 3 2017

Mergedinto: 656730
Owner: ----
Status: Duplicate (was: Assigned)
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