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Thunderbird windows resize automatically on external monitor - unreadable

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  • 최종 답변자: spmcc123

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(Very annoying! Wrote detailed question, provided screenshot, only to be told after hitting Post Question button, that I did not have authorisation to post…. I am logged in. Trying again)

Using Thunderbird 38.7.0 on MacBook Pro, 13” Retina, running OSX 10.11.3. Thunderbird works and displays fine on laptop. Have older external monitor over VGA connection via Mini DisplayPort. 1280x1024 @ 60Hz. When Thunderbird windows are dragged to external monitor they immediately resize large and often unreadable. This happens to all Thunderbird windows (message, Mail & Newsgroups). Screen shot is attached, with Thunderbird superimposed on Firefox screen I am writing you on. No other app/window behaves as Thunderbird does.

Believe problem started after installing Theme Font & Size Changer. Have removed the add-on, restarted, restarted in Safe Mode… problem persists. Simultaneously, default button presented in dialogue boxes (e.g. “Save Message” dialogue) now has text (e.g. “Save”) in white, and essentially unreadable. Under Add-ons Manager/Appearance, I show “Default 38.7.0 The default theme.”

As noted, have started in Safe Mode, have Reset toolbars and controls, have disabled all add-ons and problem persists. (Willing to remove and reinstall Thunderbird if this might help, but concerned about saving archived IMAP messages - researching this now). If I cannot fix, I have to migrate to other email/messaging app, which I want to avoid!

Any help greatly appreciated!

(Very annoying! Wrote detailed question, provided screenshot, only to be told after hitting Post Question button, that I did not have authorisation to post…. I am logged in. Trying again) Using Thunderbird 38.7.0 on MacBook Pro, 13” Retina, running OSX 10.11.3. Thunderbird works and displays fine on laptop. Have older external monitor over VGA connection via Mini DisplayPort. 1280x1024 @ 60Hz. When Thunderbird windows are dragged to external monitor they immediately resize large and often unreadable. This happens to all Thunderbird windows (message, Mail & Newsgroups). Screen shot is attached, with Thunderbird superimposed on Firefox screen I am writing you on. No other app/window behaves as Thunderbird does. Believe problem started after installing Theme Font & Size Changer. Have removed the add-on, restarted, restarted in Safe Mode… problem persists. Simultaneously, default button presented in dialogue boxes (e.g. “Save Message” dialogue) now has text (e.g. “Save”) in white, and essentially unreadable. Under Add-ons Manager/Appearance, I show “Default 38.7.0 The default theme.” As noted, have started in Safe Mode, have Reset toolbars and controls, have disabled all add-ons and problem persists. (Willing to remove and reinstall Thunderbird if this might help, but concerned about saving archived IMAP messages - researching this now). If I cannot fix, I have to migrate to other email/messaging app, which I want to avoid! Any help greatly appreciated!
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선택된 해결법

As promised..... Only solution was to create a new profile and re-setup the email accounts. Now Thunderbird window does not oddly resize fonts when moved to external monitor (actually, it does resize, but rapidly changes back to "normal" view. It makes me suspect that Theme Font and Size Changer wrote some script that prevented the window from automatically readjusting. I would caution against using the extension...). Also used the ImportExportTool extension to export archives to external drive (for safekeeping) and reimport to new profile (for searching).

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Your issue is that retina uses a pixel doubling technology to make everything look of a size you can actually see, your other monitor as VGA does not support the pixel doubling. What you need is two different video drivers on your device, but with a mac I have no idea how that is done.

Alternatively get a second monitor that also supports retina.

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Thanks, Matt, but it did not seem to happen for several years on the same setup (Retina MacBook and older monitor); it seems to have started only after I added the Theme Font & Size Changer add-on and persists even after removing it. It also does not occur with any other program (e.g. Firefox, Apple's Mail, Word...). This make me think profile settings have been compromised.....

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Everything that the addon does could be achieved by you writing a css file. So you could get these changes without using the addon.

I don't know precisely how this addon goes about its work, but my view is that if changes can be applied without the addon, any changes it does apply could well persist after the addon itself has been removed.

IOW, removing the addon won't necessarily undo the changes it applied. Your best bet might be to re install the addon and see if you can find an adjustment that works.

But....

If font sizes are declared in pixels, as is done in Firefox and Thunderbird, then if you have two displays where the pixels are of different size/spacing, it's hard to see how it could print the text at the same size on both displays.

I currently have a happy set up where the external monitor has the same logical size (in pixels) as the laptop's built in screen, so I can move apps between the two knowing if the window fits one monitor it will fit the other one too, so no need to be continually resizing stuff. But the laptop screen is physically smaller than the external screen, so necessarily presents everything smaller. I'd love the text on the laptop to be bigger, but adjusting to make it do so would take me to a point where text would no longer fit into the controls. Using a lower resolution on the laptop display would break the compatibility between the two screens. As always, it's a compromise.

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Thanks Zenos. I imagine that you are right and that the add-on wrote the equivalent of a css file and it persists. Odd thing is that it changed the default button font color, as well as mucking up font sizing when dragged to the external (and very old) display. I don't mind resizing windows, it is the grossly enlarged text I can't work with.

So, I am looking at uninstalling and reinstalling Thunderbird and only trying to preserve archived messages. Searching the Support Forum now for advice on that. Once I get it reinstalled, I will post back if it solved the issue (and then post to the Add-on site reviews)

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선택된 해결법

As promised..... Only solution was to create a new profile and re-setup the email accounts. Now Thunderbird window does not oddly resize fonts when moved to external monitor (actually, it does resize, but rapidly changes back to "normal" view. It makes me suspect that Theme Font and Size Changer wrote some script that prevented the window from automatically readjusting. I would caution against using the extension...). Also used the ImportExportTool extension to export archives to external drive (for safekeeping) and reimport to new profile (for searching).