1557293 - Font rendering issue on Debian Stretch

Status: RESOLVED INVALID

(Core :: Layout: Text and Fonts, defect)

Description

[Kristian Klausen]

Attachment: Screenshot Firefox Nightly - Arch Linux (not a clean profile, but the result is the same)

Hi

I'm not sure if this is a Firefox bug or what it is, but this font won't load on my Debian Stretch machine but works perfectly on my Arch Linux machine, I assume it is due to different version of the libraries.

I have tested with Firefox 66.0.2, 67 and Nightly (2019-06-05) (clean profiles) and I don't get any web console or browser console error.

Debian Stretch machine:

$ glxinfo | grep OpenGL
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) HD Graphics 500 (Broxton 2x6) 
OpenGL core profile version string: 4.5 (Core Profile) Mesa 13.0.4
OpenGL core profile shading language version string: 4.50
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 13.0.4
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 13.0.4
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
OpenGL ES profile extensions:

Arch Linux machine:

$ glxinfo | grep OpenGL
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) UHD Graphics 620 (Kabylake GT2) 
OpenGL core profile version string: 4.5 (Core Profile) Mesa 19.0.5
OpenGL core profile shading language version string: 4.50
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 19.0.5
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 19.0.5
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
OpenGL ES profile extensions:

I have also tested with LIBGL_ALWAYS_SOFTWARE=true to rule out GPU error, but the result is the same.

Comment 1

[Kristian Klausen]

Attachment: Screenshot Firefox Nightly - Debian Stretch

Comment 2

[Jonathan Kew [:jfkthame]]

Maybe a difference in the FreeType versions on the two systems? Can you confirm exactly what FT versions are present?

Comment 3

[Kristian Klausen]

(In reply to Jonathan Kew (:jfkthame) from comment #2)

Maybe a difference in the FreeType versions on the two systems? Can you confirm exactly what FT versions are present?

I just upgraded libfreetype6 from 2.6.3-3+b1 to 2.9.1-3 on the Debian Stretch machine and it fixed the issue. Thank you for your help

Comment 4

[Kristian Klausen]

Resolved as INVALID as this is not a Firefox bug, but some bug in FreeType (I assume?).