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Problem: Matlab install problems (various)

Solutions:

• Unable to launch the MATLABWindow application: solution (mathworks)
• University Login verification fails: solution (archwiki)

Problem: Cannot connect to eduroam wireless network using Fedora (25)

Keywords: fedora 25 eduroam wireless authentication

Solution:

• Open the "Network Connections" (not "Network") application
• Add -> Wi-Fi -> Create
• (** Wi-Fi tab **)
  • SSID = eduroam
  • Mode == Client
  • Device == (select wireless interface)
  • MTU == automatic
• (** Wi-Fi Security tab **)
  • Security == WPA & WPA2 Enterprise
  • Authentication == Protected EAP (PEAP)
  • Anonymous Identity == [[blank]]
  • [x] No CA certificate is required
  • PEAP version == Automatic
  • Inner authentication == MSCHAPv2
  • Username == [[sdsuID]]
  • Password -== [[sdsuID-PASSWORD]]
• ... and Bob's your uncle!

Problem: On a system with multiple GPU cards (one for display, others for CUDA computations), xstart / xinit will sometimes pick the wrong (first one on the list) card for the display.

Keywords: fedora 25 select GPU device nvidia driver

Solution:

• run nvidia-settings to generate /etc/X11/xorg.conf
• lspci | egrep -i VGA to get the BusID of the card, e.g.
  
  04:00.0 VGA compatible controller: NVIDIA Corporation GM204 [GeForce GTX 970] (rev a1)
  
  
• Add the line: BusID "PCI:4:0:0"
  
  to Section "Device" of /etc/X11/xorg.conf

Wrinkle: this stopped working sometime in the summer of 2017...

Problem: Legacy postscript fonts cause warnings and strange output from LaTeX processed with dvips, dvipdf, and/or pdflatex.

Keywords: LaTeX fonts legacy Helvetica pdflatex

Error Message:
/usr/bin/dvips: Font Helvetica-Bold used in file Figures/basis_q1.eps is not in the mapping file.
/usr/bin/dvips: Font Helvetica used in file Figures/basis_q1.eps is not in the mapping file.

Solution:

• Add the line: p +pdftex35.map
  
  to /usr/share/texlive/texmf-dist/dvips/config/config.ps

Problem: Plotting in Matlab R2016b fails under Fedora 25.

Error Message:
Error using gca
While setting property 'Parent' of class ''Axes'':
Can't load '/opt/MATLAB/R2016b/bin/glnxa64/libmwosgserver.so':
/opt/MATLAB/R2016b/bin/glnxa64/../../sys/os/glnxa64/libstdc++.so.6: version `CXXABI_1.3.9' not found (required by /lib64/libGLU.so.1)
Error in newplot (line 73)
ax = gca(fig);

Solution:

• Force matlab to load the system version of libstdc++ by creating the alias
  
  
• alias matlab='LD_PRELOAD=/usr/lib64/libstdc++.so.6 /opt/MATLAB/R2016b/bin/matlab'

Alternative (alleged):

• Copy/edit .matlab7rc.sh — uncomment
  
  LDPATH_PREFIX='$MATLAB/sys/opengl/lib/$ARCH'

to always use the OpenGL libraries shipped with MATLAB.