14.04 Thinkpad T450: Text getting messed up on large screens

Thanks all for your support. Luke put me on a track that solved the problem in a easy way. The issue relates to issues using SNA (Sandybridge's New Acceleration) with the Intel Graphics and need to revert back to UXA (Unified Acceleration Architecture). The way to do this is pretty simple:

Put the following:

Section "Device"
   Identifier  "Intel Graphics"
   Driver      "intel"
   Option      "AccelMethod"  "uxa"
EndSection

in file /etc/X11/xorg.conf.d/20-intel.conf, create the directory /etc/X11/xorg.conf.d/ if it does not exist. This must be done as root:

$ sudo mkdir /etc/X11/xorg.conf.d/
$ sudo cp  20-intel.conf /etc/X11/xorg.conf.d/20-intel.conf

Assuming you created the file 20-intel.conf in the local directory.

Hope that help others!

BTW, here's the source for the solution: https://wiki.archlinux.org/index.php/Intel_graphics#SNA_issues

14.04 Thinkpad T450: Text getting messed up on large screens

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