Incorrect scaling when using a HiDPI monitor and a standard monitor

NEW
Unassigned

Status

()

P2
normal
2 years ago
8 months ago

People

(Reporter: tsmith, Unassigned)

Tracking

53 Branch
All
Windows 10
Points:
---

Firefox Tracking Flags

(Not tracked)

Details

(Whiteboard: tpi:+)

Attachments

(5 attachments)

(Reporter)

Description

2 years ago
Created attachment 8832516 [details]
bad_about_size.png

On my current setup I have two monitors a 27" 4K (3840x2160) monitor and a 24" (1920x1200) and I am running Windows 10 (1607)

The 4K monitor is scaled to 175% (otherwise everything would be tiny) and the standard monitor is at 100%.

When the browser is on the standard display some dialogs are scaled incorrectly (see attached images)
(Reporter)

Comment 1

2 years ago
Created attachment 8832517 [details]
bad_dialog_size.png
(Reporter)

Comment 2

2 years ago
Created attachment 8832518 [details]
current_setup.png
Component: General → Widget: Win32
Product: Firefox → Core

Comment 3

2 years ago
I've got the same problem; it's always worked fine up until now so this appears to be a regression introduced with the most recent 52.0b3 update.
Hi Tyson, please check out bug 1239347.  I'm curious, is what you're experiencing the same as described there?
Flags: needinfo?(twsmith)
(Reporter)

Comment 5

2 years ago
(In reply to Tracy Walker [:tracy] from comment #4)
> Hi Tyson, please check out bug 1239347.  I'm curious, is what you're
> experiencing the same as described there?

No that seems to be slightly different. I think.
Flags: needinfo?(twsmith)

Updated

2 years ago
Priority: -- → P2
Whiteboard: tpi:+

Comment 6

8 months ago
Version : 59.0.2 (X64)
OS : Windows 10 (1709 build)
Main screen : laptop 17" 3840x2160 - 175% scale
Second screen : HD monitor 23" 1920x1080 - 100% scale

Same problem with version 59.0.2 (X64)

I have a laptop with 4K screen configured to 175% scale and a standard HD monitor configured to 100% scale.
Firefox on the 4K screen is good, but if I put it in the second monitor, the scale is not ok : too too big to be used.
Chrome, Opera, Maxthon or Edge can resize the UI with the new DPI settings on the second monitor, but not Firefox.

An extension made the job but only for version prior than V57 : https://github.com/ertug/autohidpi

Thank you...

Comment 7

8 months ago
Created attachment 8970832 [details]
Firefox 59 on 4K monitor

Comment 8

8 months ago
Created attachment 8970833 [details]
hdmonitor.png

Same Firefox as 4kmonitor dragged to the HD monitor
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