Bug 366381

Summary:	Bad rendering of certain fonts
Product:	[Plasma] plasmashell	Reporter:	Philip Nystromer <philip.nystromer>
Component:	general	Assignee:	David Edmundson <kde>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	bshah, cfeck, nate, plasma-bugs-null
Priority:	NOR
Version First Reported In:	5.7.2
Target Milestone:	1.0
Platform:	Gentoo Packages
OS:	Linux
URL:	http://picpaste.com/font_rendering_problem-okYEvPay.png
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Philip Nystromer 2016-08-03 14:55:16 UTC

I just upgraded from KDE 4 to KDE 5 Plasma.

Since I have good resolution on my screen (2 560 x 1 440, Lenovo X1 Carbon Laptop) I wanted to enlarge the fonts. . After these operations two things happened:

1. The Fixed Width font options no longer contain Noto Sans font, which was the default for Fixed Widht when I entered the menu.

2. Some fonts, notably in KDE applications such as Dolhpin, the KDE Application menu, the clock figures, the font in the konsole, etc do not render properly any more. They are green tinted and very fuzzy. No matter how I try to change the fonts back to normal, I can not get rid of the problem. See screen shots 

At some point in changing  font sizes I also A tried to temporarily switch Look and Feel (System Settings -> Workspace Theme -> Look and Feel) to Oxygen and then back to Breeze. I do not know if this triggered the font problem.

Reproducible: Always

Steps to Reproduce:
1. Permant problem
2.
3.



Rebooting does not help
I have created a new user to see if the problem persist  - and it does.
The problem persist no matter how I try to switch between Look and Feel options, desktop themes and fonts. 

I consider the severity between Normal and Grave. It is very hard to read menus and text in some applications.

Comment 1 Christoph Feck 2016-08-05 14:39:43 UTC

This looks like a graphics driver issue. Which are you using?

Comment 2 Philip Nystromer 2016-08-06 08:09:58 UTC

I believe it is intel

(see this link for my complete Xorg.0.log http://pastebin.com/M6r8T7fM)

# lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 09)

# cat /var/log/Xorg.0.log | grep LoadModule
[    10.196] (II) LoadModule: "glx"
[    10.211] (II) LoadModule: "intel"
[    10.214] (II) LoadModule: "modesetting"
[    10.215] (II) LoadModule: "fbdev"
[    10.215] (II) LoadModule: "vesa"
[    10.226] (II) LoadModule: "dri2"
[    10.226] (II) LoadModule: "present"
[    10.347] (II) LoadModule: "evdev"
[    10.368] (II) LoadModule: "synaptics

Comment 3 Philip Nystromer 2016-08-06 08:21:50 UTC

Graphics chip is Intel HD Graphics 5500

Comment 4 Philip Nystromer 2016-08-18 17:28:00 UTC

This is probably a bug in the way KDE determine the System default settings for my particular screen and monitor.

I have managed to apply a manual setting under Applikcation Launcher -> Settings -> System settings  -> Fonts,   as follows 

KDE Application Menu -> Settings -> System Settings -> Fonts -> <check the Force Fonts DPI button> and set it to 120

and

KDE Application Menu -> Settings -> System Settings -> Fonts -> Use Anti-aliasing -> <change this from "System settings to" Enabled">

then proceed from there into the Configure... menu and experiment with RGB etc settings. For me it worked with:
"Exclude range tick box": <Unchecked>
"Subpixel rendering type": <RGB>"
"Hinting style": <Medium>

I think the root cause is that the KDE 5 Plasma suite, together with Xorg does not recognize the type of screen and monitor monitor I have and set the Font System Default settings accordingly.

My screen is high resolution 2560x1440 pixel 14" monitor (Computer is Lenovo X1 Carbon laptop, type 20A7-005KMS)

Comment 5 Nate Graham 2021-03-09 05:14:33 UTC

Does this still happen to you in either Plasma 5.18 (the current LTS version) or Plasma 5.21 (the latest released version)?

Comment 6 Bug Janitor Service 2021-03-24 04:33:37 UTC

Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!

Comment 7 Bug Janitor Service 2021-04-08 04:33:32 UTC

This bug has been in NEEDSINFO status with no change for at least
30 days. The bug is now closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!