Dear Roberto, You can install Xquartz 2.7.8 which is still available from the xquartz web site. This was the last version where Xquartz behaved properly and it runs fine on High Sierra.
Regards MGM Martin G Montgomery Medical Research Council Mitochondrial Biology Unit University of Cambridge Wellcome Trust/MRC Building Cambridge Biomedical Campus Hills Road Cambridge Great Britain CB2 0XY www.mrc-mbu.cam.ac.uk > On 2 Dec 2017, at 00:04, Steiner, Roberto <roberto.stei...@kcl.ac.uk> wrote: > > Hi all > > Since my recent upgrade to High Sierra, XQuartz (most recent version 2.7.11 - > fresh installation) does not longer behave properly. Essentially, X11 does > not seem to understand touchpad actions (for example cannot close X11 > windows, cannot drag them around, etc.). This problems also affects programs > that rely on X11. Has anyone experienced (and ideally solved) this problem? > > Thanks in advance > Roberto > > Roberto A. Steiner, PhD > Randall Centre of Cell and Molecular Biophysics > Faculty of Life Sciences and Medicine > King's College London > > roberto.stei...@kcl.ac.uk <mailto:roberto.stei...@kcl.ac.uk> > Phone 0044 20 78488216 > Fax 0044 20 78486435 > > Room 3.10A > New Hunt's House > Guy's Campus > SE1 1UL > London >