Menu and context text size in LrC too large - Dual monitor

[Tom E P]

System:

Windows 11

LrC 12.1

Monitor 1: 17'' (3840x2160) scaled at 200% in Windows Display settings

Monitor 2: 27'' (2560x1440) scaled at 100% in Windows Display settings - this is the monitor I use for LrC 

LrC settings: Preferences>Interfase>Font Size: Automatic (changing this did not affect the problem)

Problem:

• The top text (catalogue name etc), menus (File, Edit, Library, etc) and all pull down menus display far too large on Monitor 2 (see screenshots, side by side )

• Text in the Preference settings are the right size, but lines with check boxes are cropped in the upper end and are hard to decipher  (see screenshot)
• 
• When i drag LrC to monitor 1 (higher resolution, but smaller screen) then the top menu text has the right size but all the rest of the text becomes to small to read.
• 
• All other text in LrC display in the right size, 

I hope this can be fixed.  LrC is the only program with this problem. All other programs behave as expected, including Photoshop Premiere Pro, Microsoft programs and other.

[johnrellis]

The size of the menu-bar text is controlled by the setting of Windows Display Scaling, while all other text is controlled by Preferences > Interface > Font Size.

You say you're running LR on the second display, with 100% display scaling, while the first display has 200% scaling. Perhaps Windows or LR is getting confused about which display LR is on. (That it works with other apps could be because they make different calls to Windows; or it could be a LR bug.)

I suggest these troubleshooting steps:

1. Try setting the second display's scaling to 100% (so both are 100%).  Then restart the computer (just to make sure).  Does that make the size of LR's menu-bar text smaller?

2. Try resetting LR's preferences:
https://www.lightroomqueen.com/articles-page/how-do-i-reset-lightrooms-preferences/

LR sometimes soils its preferences file, and resetting it can fix all sorts of wonky behavior. That article explains how to restore the old preferences if resetting doesn't help.

[Tom E P]

Thank you John.  Your troubleshooting advice were good and narrowed down the understanding of the bug.

Firstly, resetting all LrC preferences was already tried to no effect.

But resetting Monitor 1 to 100% in the Windows>Display Settings so that both monitors are at 100% did the trick, in the sense that LrC now behaves as the other programs on both monitors. I.e. LrC now looks fine on Montor 2 which is where I use it. The cropping of the check box lines in LrC settings were also fixed.  Paradoxically this does not help me at all, since havin my 17'' (3840x2160) Monitor 1 scaled at 100% leaves this screen useless as all text on thet screen becomes far too small to work with.  So I have to reset Monitor 1 to 200%.  When I reset Monitor 1 to 200% with LrC open in Monitor 2 it stays fine.  However when I close the program and repoen it straight into Monitor 2 then the menu texts in LrC becomes too large again, even when the program is opened straight into Monitor 2 (which is at 100%) without having breen in Monitor 1 (200%) at all.  So the bug is that when LrC opens it reads the scaling set at the primary monitor 1 regrdless of which monitor it curretly resides in. It should look up the scaling of the monitor it is displayed in at any given time. This is a bug Adobe needs to fix.  Be aware, I now see that Liigtroom CC (I use this more seldom) has the excat same bug 

[Thor Egil Leirtrø]

As a workaround you might try to swap the monitor cables, promoting monitor #2 to #1 and see if that helps.

[Tom E P]

Thanks for the proposal. However my setup is a laptop workstation with Monitor 1 as internal screen. Hence there there are not two cables, just the one to Monitor 2.  I could try to redefine Monitor 2 as the primary display in Windows, but I would rather not since it makes sence to have the internal screen as primary for when I work with only the laptop., 

[johnrellis]

I don't think it's likely that Adobe will fix this very quickly (if at all). While waiting, you might consider looking for a utility that will save display configurations, to make it easy to switch the primary display.  If you have an AMD graphics chipset, I read their utility will save multiple configurations for you -- don't know about Nvidia.  There are a couple of command-line utilities described here that you could use from scripts:

https://www.itechtics.com/change-primary-monitor/

[johnrellis]

"So the bug is that when LrC opens it reads the scaling set at the primary monitor 1 regrdless of which monitor it curretly resides in. It should look up the scaling of the monitor it is displayed in at any given time. This is a bug Adobe needs to fix."

Please post this as a bug report in the Bugs section, following these guidelines:

https://community.adobe.com/t5/lightroom-classic-bugs/how-do-i-write-a-bug-report/idi-p/12386373 

Make the steps-to-reproduce as precise as possible -- unless an Adobe employee is able to quickly reproduce the problem, the report will likely end up in the bit bucket.

[Xiaofeng274168944tlm]

I agree it is a bug. LRC can't select the right font size when my laptop's scaling(225%) differs from my extended second display(100%). It becomes normal after I set both of the scaling as 100%. But PS has no this kind of problem. it can automatically adjust the font size wherever I drag the window to any screens.