I had the same Problem. The monospace-font in konsole looked ugly after upgrade from 17.04. Same with freetype 2.8.1. Then I downgraded libfreetype to 2.6.3 as HorstBort mentioned, and konsole looks nice again. Here the description how I managed it:
1. add 'deb http://archive.ubuntu.com/ubuntu/ zesty main restricted universe multiverse' in '/etc/apt/sources.list'
2. create the file '/etc/apt/preferences' with the following contents: --- Package: libfreetype6:amd64 Pin: version 2.6.3* Pin-Priority: 1001
Package: * Pin: release v=17.04, l=Ubuntu Pin-Priority: -1
Package: libfreetype6:i386 Pin: version 2.6.3* Pin-Priority: 1001
Package: * Pin: release v=17.04, l=Ubuntu Pin-Priority: -1 ---
3. apt-get update
I had the same Problem. The monospace-font in konsole looked ugly after upgrade from 17.04.
Same with freetype 2.8.1.
Then I downgraded libfreetype to 2.6.3 as HorstBort mentioned, and konsole looks nice again.
Here the description how I managed it:
1. add 'deb http:// archive. ubuntu. com/ubuntu/ zesty main restricted universe multiverse' in '/etc/apt/ sources. list'
2. create the file '/etc/apt/ preferences' with the following contents:
---
Package: libfreetype6:amd64
Pin: version 2.6.3*
Pin-Priority: 1001
Package: *
Pin: release v=17.04, l=Ubuntu
Pin-Priority: -1
Package: libfreetype6:i386
Pin: version 2.6.3*
Pin-Priority: 1001
Package: *
Pin: release v=17.04, l=Ubuntu
Pin-Priority: -1
---
3. apt-get update