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[Bug 2017573] Re: Font hinting broken on Plasma 23.04


@mrvanes: I tested with Liberation Sans and Verdana on Ubuntu with
GNOME. My notes:

* I can confirm that Verdana honors the font hinting, both on 23.04 and

* I can confirm that Liberation Sans ignores the font hinting on 23.04.
However, I see the very same behavior on 22.04. The difference in
rendering between no hinting and full hinting is very small. Please see
the attached picture.

So the only regression I see is the changed behavior related to the
upgrade of the Ubuntu font.

It appears to me — as you already have indicated — as if only some fonts
honor the font hinting value. But my observations indicate that that is
by design. Maybe the default font configuration — antialiasing enabled
and only slight hinting — is there for a reason.

I'm no longer sure that we have a bug here. :/

** Attachment added: "hinting-test_liberation-sans.png"

** No longer affects: plasma-desktop (Ubuntu)

** Summary changed:

- Font hinting broken on Plasma 23.04
+ Font hinting broken on 23.04

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  Font hinting broken on 23.04

Status in fonts-ubuntu package in Ubuntu:

Bug description:
  Just upgraded my laptops to Kubuntu 23.04 Lunar Lobster and hinting
  for all non-commercial fonts seems broken. I used to have decent if
  not perfect hinting on Ubuntu and Ubuntu Mono font, but now the only
  fonts that still hint correctly are Microsoft's Verdana and Tahoma
  etc. Not sure whether the devide is exactly along this line, but it
  stands out.

  Tried regenerating font cache (fc-cache -rv) but that didn't help.

  Operating System: Kubuntu 23.04
  KDE Plasma Version: 5.27.4
  KDE Frameworks Version: 5.104.0
  Qt Version: 5.15.8
  Kernel Version: 6.3.0 (64-bit)
  Graphics Platform: Wayland
  Processors: 8 × Intel® Core™ i7-10510U CPU @ 1.80GHz
  Memory: 31.1 GiB of RAM
  Graphics Processor: Mesa Intel® UHD Graphics
  Manufacturer: Notebook
  Product Name: N141CU
  System Version: Not Applicable

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