Dao's BLOG

Change the value of the following lines

GtkScrollbar::has-backward-stepper = 1
GtkScrollbar::has-forward-stepper = 1
GtkScrollbar::stepper-size = 13
GtkScrollbar::slider-width = 13

in /usr/share/themes/Adwaita/gtk-2.0/main.rc

and comment off

# Disable arrows for qt in scrollbars
# image {
# function = ARROW
# detail = “vscrollbar”
# }
# image {
# function = ARROW
# detail = “hscrollbar”
# }

startxwin — +iglx -nowgl &

in cygwin window,
then

export DISPLAY=:0.0

ssh -XYC @

then ssh to a node, start fsleyes

This works for me.

Matlab R2017a can start parpool in text mode but will crash in GUI. The problem is that it is trying to modify a few files in the local toolbox to accommodate the computer specs. If the directory %MATLAB/toolbox/local is readonly, the updated profile will fail writing, and the parpool will still attempt to start on default profile, which crashes since hardware mismatch.

To fix this, you can assign global writing privilege to the %MATLAB/toolbox/local folder, and try again.

CentOS 7 comes with gcc 4.8.5 but MrTrix needs 4.9+, also it needs Qt-qtsvg
To do this, addition to the mrtrix install instruction:
yum install qt5-qtsvg qt5-qtsvg-devel qt5-qtbase-devel devtoolset-3-gcc.x86_64 devtoolset-3-gcc-c++.x86_64
export QTDIR=/usr/lib64/qt5;export PATH=/usr/lib64/qt5/bin/:$PATH; export CXX=/opt/rh/devtoolset-3/root/usr/bin/g++;
./configure
./build
Then you get it.

In cygwin, if you start X server using command:
$ X -multiwindow -nowgl +iglx &
and
$ export LIBGL_ALWAYS_INDIRECT=1
$ export DISPLAY=:0.0
you will have a GLX functionality over ssh through indirect software rendering

if you start X server using command:
$ X -multiwindow -wgl +iglx &
and
$ export LIBGL_ALWAYS_INDIRECT=1
$ export DISPLAY=:0.0
you will have a GLX functionality over ssh through indirect hardware rendering

In linux system, also, if you start your X interface by running
$ startx — +iglx

your x-interface will accept remote OpenGL rendering

The current version of GALAXY (https://usegalaxy.org/) will run into error when using ldaps authentication mechanics. The error is
Traceback (most recent call last):
File “/home/galaxy/galaxy-dist/lib/galaxy/auth/providers/ldap_ad.py”, line 117, in authenticate
ldap.set_option(_opt)
File “/home/galaxy/galaxy-dist/.venv/local/lib/python2.7/site-packages/ldap/functions.py”, line 135, in set_option
return _ldap_function_call(None,_ldap.set_option,option,invalue)
File “/home/galaxy/galaxy-dist/.venv/local/lib/python2.7/site-packages/ldap/functions.py”, line 66, in _ldap_function_call
result = func(_args,**kwargs)
ValueError: option error
The function in Python LDAP binary _ldap.so func(_args,**kwargs) does not take the option argument “OPT_X_TLS_REQUIRE_CERT” properly.
The CentOS 7 system version of python-ldap binary has the same issue.

To overcome this, you will need to download the python-ldap source from
wget https://pypi.python.org/packages/67/d9/fa0ea70d1792875745116ad62ac8d4bcb07550b15cded591bb57df6a6d9a/python-ldap-2.4.32.tar.gz#md5=7c46c8a04acc227a778c7900c87cdfc7
then install certain devel package using
yum install openldap-devel
then build the source by running
python setup.py build
Afterward, you do not need to replace the entire ldap directory, but only overwrite the _ldap.so file in your galaxy/.venv/lib/python2.7/site-packages/ by the file from your build in ./build/lib.linux-x86_64-2.7/ folder.
Then the ldaps will work.