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Bug 122650 - blurry fonts of text size and text style lists with a 200% scaling on 4k HiDPI display
Summary: blurry fonts of text size and text style lists with a 200% scaling on 4k HiDP...
Status: UNCONFIRMED
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Writer (show other bugs)
Version:
(earliest affected)
6.1.3.2 release
Hardware: All All
: medium normal
Assignee: Not Assigned
URL:
Whiteboard:
Keywords:
Depends on:
Blocks: HiDPI
  Show dependency treegraph
 
Reported: 2019-01-11 09:58 UTC by Frederic Parrenin
Modified: 2020-04-06 17:02 UTC (History)
7 users (show)

See Also:
Crash report or crash signature:


Attachments
.png showing the blurry text styles list (653.87 KB, image/png)
2019-01-11 09:58 UTC, Frederic Parrenin
Details
.png screenshot showing the blurry text sizes list (562.54 KB, image/png)
2019-01-11 09:59 UTC, Frederic Parrenin
Details

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Description Frederic Parrenin 2019-01-11 09:58:23 UTC
Created attachment 148233 [details]
.png showing the blurry text styles list

The lists of text sizes and text styles in the toolbar look blurry with a scaling of 200% on a 4k HiDPI display.
I attach two screenshots to demonstrate the problem.
By comparison, the text fonts list looks crisp.
Comment 1 Frederic Parrenin 2019-01-11 09:59:04 UTC
Created attachment 148234 [details]
.png screenshot showing the blurry text sizes list
Comment 2 Mike Kaganski 2019-01-11 10:33:17 UTC
Please provide some details:

1. Which OS is used?
2. How did you set the said scaling (which tool was used and which settings there set to what)?
3. Full content of Help->About, including VCL plugin info

This could allow others to try to reproduce this problem, which could be OS/DM, or VCL-dependent.
Comment 3 Frederic Parrenin 2019-01-11 10:37:18 UTC
Yes, sorry, I forgot to specify that I am on debian 10 using wayland.
I set the scaling to 200% in the gnome control panel, display section.
Help->About: 
Version: 6.1.4.2
Build ID: 1:6.1.4-3
Threads CPU : 8; OS : Linux 4.19; UI Render : par défaut; VCL: gtk3; 
Locale : fr-FR (fr_FR.UTF-8); Calc: group threaded
Comment 4 Timur 2019-01-11 12:01:31 UTC
Do you reproduce with daily master? Easiest is https://libreoffice.soluzioniopen.com/index.php/daily-version/.
Comment 5 Frederic Parrenin 2019-01-11 13:45:15 UTC
Yes, this also happens with master.
And to be more precise, this only happens when you change the scaling (from 100% to 200%) when LO is running.
If you restart LO, the problem is removed.
Comment 6 Frederic Parrenin 2019-01-11 13:45:42 UTC
And contrary to what I said, this also happen with the text font list.
Comment 7 Dieter 2019-09-01 08:52:00 UTC
Frederic, it seems, that nobody could confirm the described bug.
A new major release of LibreOffice is available since this bug was reported. Could you please try to reproduce it with the latest version of LibreOffice from https://www.libreoffice.org/download/libreoffice-fresh/ ?I have set the bug's status to 'NEEDINFO'. Please change it back to 'UNCONFIRMED' if the bug is still present in the latest version.
Comment 8 Frederic Parrenin 2019-09-02 09:11:41 UTC
I can confirm this bug is still present with 6.3.0.4.
Actually, this happens sometimes when I change the monitor, from the one integrated into my laptop, to my external monitor.
Note that I also have with problem with other gtk applications, like nautilus.
So this is probably a gtk issue.
Comment 9 Buovjaga 2019-10-22 11:40:54 UTC
What if you try 6.4 alpha1 http://libreoffice.soluzioniopen.com/
by launching with

SAL_USE_VCLPLUGIN=kf5 ./LibreOffice-6.4.0.0.alpha1-x86_64.AppImage

(after making the file executable)
Comment 10 Toshen 2020-03-01 17:35:42 UTC
I experienced the same thing when upgrading from LibreOffice 6.2.7.1 to 6.3.5:
macOS Catalina 10.15.3
Mac mini (2018)
3 GHz 6-Core Intel Core i5
16 GB 2667 MHz DDR4
Intel UHD Graphics 630 1536 MB
DELL P2715Q (3840 x 2160) Resolution Default for display
From About LibreOffice:
CPU threads: 6; OS: Mac OS X 10.15.3; UI render: default; VCL: osx; 
Locale: en-US (en_US.UTF-8); UI-Language: en-US

The PNG files attached by the original poster show exactly what I experienced: UI text is clear, but context text is quite blurry.

I tried various suggestions I found in the community forum, but the only way I could fix it was to revert LibreOffice 6.2.7.1.

I've been using LibreOffice for years and have never previously experienced anything like this. Also, I'm not having issues with any other apps I use.
Comment 11 Toshen 2020-03-01 17:37:59 UTC
Sorry, typo, should read:
The PNG files attached by the original poster show exactly what I experienced: UI text is clear, but content text is quite blurry.
Comment 12 Buovjaga 2020-03-01 18:21:50 UTC
(In reply to Toshen from comment #10)
> I experienced the same thing when upgrading from LibreOffice 6.2.7.1 to
> 6.3.5:
> macOS Catalina 10.15.3

As you are a macOS user, it is possible you are hitting bug 122218, which is fixed for the upcoming 6.4.2.

You could test by running a macOS daily build: https://dev-builds.libreoffice.org/daily/master/current.html
Comment 13 Xisco Faulí 2020-04-06 15:10:34 UTC
(In reply to Buovjaga from comment #12)
> (In reply to Toshen from comment #10)
> > I experienced the same thing when upgrading from LibreOffice 6.2.7.1 to
> > 6.3.5:
> > macOS Catalina 10.15.3
> 
> As you are a macOS user, it is possible you are hitting bug 122218, which is
> fixed for the upcoming 6.4.2.
> 
> You could test by running a macOS daily build:
> https://dev-builds.libreoffice.org/daily/master/current.html

Setting to NEEDINFO until reporter comes back to us
Comment 14 Toshen 2020-04-06 17:00:12 UTC
Apologies, I'm neither an early adopter nor a power user, and rely on LibreOffice for my volunteer work, so I was hesitant to install the newest version, but I just went ahead and installed 6.4.2 and the text looks fine. Thank you.
Comment 15 Frederic Parrenin 2020-04-06 17:02:43 UTC
So, I cannot reproduce with 6.4 when I use SAL_USE_VCLPLUGIN=kf5.
Note however that in this case, the UI does not scale with the Gnome Settings.
The problem is still present when I use the standard gtk UI.
I would like to emphasis again that this problem is actually really minor, since it happens only when you change the scaling, and disappear when you restart LO.