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function XOrgConfSelector(sdir)
% XOrgConfSelector([sdir]) - Select a X11 configuration file to apply.
%
% By default configuration files are chosen from a PsychtoolboxConfigDir
% subfolder, where XOrgConfCreator creates and stores them by default.
%
% You can override the choice of the directory for config files by
% providing the optional 'sdir' argument with the path to a different
% folder.
%
% The chosen configuration file is copied into the systems
% /etc/X11/xorg.conf.d/ folder for the X-Server to pick it up and apply it
% during the next logout->login cycle or restart.
%
% History:
% 04-Nov-2015 mk Created.
% 25-Apr-2016 mk Add troubleshooting tips in case somebody needs them.
if nargin < 1 || isempty(sdir)
sdir = PsychtoolboxConfigDir ('XorgConfs');
end
conffiles = {};
candfiles = dir(sdir);
for i=1:length(candfiles)
if ~candfiles(i).isdir
conffiles{end+1} = candfiles(i).name;
end
end
fprintf('You can choose from the following X11 configuration files:\n\n');
for i=1:length(conffiles)
fprintf('%i) %s\n', i, conffiles{i});
end
fprintf('\n');
answer = [];
while isempty(answer) || ~ismember(answer, 0:length(conffiles))
answer = input('Which one should i use? (Choose 0 for remove the current active file): ');
end
fprintf('\n\n');
updated = 0;
if answer == 0
% Remove existing file:
if exist('/etc/X11/xorg.conf.d/90-ptbxorg.conf')
delete('/etc/X11/xorg.conf.d/90-ptbxorg.conf');
fprintf('Removed the old existing xorg.conf file from the X11 config folder under:\n');
updated = 1;
else
fprintf('There isn''t any old configuration file to remove in the X11 config folder under:\n');
end
else
% Copy selected file into the X11 config directory:
copyfile([sdir conffiles{answer}], '/etc/X11/xorg.conf.d/90-ptbxorg.conf');
fprintf('Copied the xorg.conf file into the X11 config folder under:\n');
updated = 1;
end
fprintf('/etc/X11/xorg.conf.d/90-ptbxorg.conf\n\n');
if updated
fprintf('Troubleshooting tip in case of emergency:\n\n');
fprintf('In case something goes seriously wrong and you end up with a non-functioning GUI,\n');
fprintf('you can always press(*) ''CTRL+ALT+F3'', which provides you with a text console. Then login\n');
fprintf('there, run octave or matlab from the text console and call XOrgConfSelector to remove\n');
fprintf('the troublesome config file. Or type this: rm /etc/X11/xorg.conf.d/90-ptbxorg.conf\n\n');
fprintf('(*)Apple computer users may need to press ''FN+CTRL+ALT+F3'' instead of CTRL+ALT+F3\n\n');
fprintf('Now please logout and login again for the new configuration to take effect.\n\n');
end
end
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