diff --git a/.github/workflows/ltfat_automated_test.yml b/.github/workflows/ltfat_automated_test.yml
index a93c93d2..4cbb4072 100644
--- a/.github/workflows/ltfat_automated_test.yml
+++ b/.github/workflows/ltfat_automated_test.yml
@@ -7,6 +7,8 @@ jobs:
     steps:
       - name: Check out repository
         uses: actions/checkout@v3
+      - name: Update submodules
+        run: git submodule update --init
       - name: Set up MATLAB
         uses: matlab-actions/setup-matlab@v1
       - name: Run tests
diff --git a/gabor/gabconvexopt.m b/gabor/gabconvexopt.m
index fe75a0c0..9b0e43bb 100644
--- a/gabor/gabconvexopt.m
+++ b/gabor/gabconvexopt.m
@@ -424,7 +424,7 @@
         paramPOCS.tol=20*eps;
         paramPOCS.maxit=5000;
         paramPOCS.verbose=flags.do_print+flags.do_debug;
-        paramPOCS.abs_tol=1;
+        %paramPOCS.abs_tol=1;
         g5.prox = @(x,T) pocs(x,G,paramPOCS);
         % g5.prox = @(x,T) ppxa(x,G,paramPOCS);
         % g5.prox = @(x,T) douglas_rachford(x,g2,g4,paramPOCS);
diff --git a/testing/test_gabfirdual.m b/testing/test_gabfirdual.m
index 6fefa8f0..a1770315 100644
--- a/testing/test_gabfirdual.m
+++ b/testing/test_gabfirdual.m
@@ -13,8 +13,6 @@
 
 disp('--- Used subroutines ---');
 
-warning('off','all');
-
 addpath([ltfatbasepath, 'thirdparty', filesep, 'unlocbox']);
 if exist('init_unlocbox.m', 'file')
     init_unlocbox;
@@ -119,6 +117,5 @@
 
 end;
 
-warning('on','all');
 close_unlocbox;
 rmpath(([ltfatbasepath, 'thirdparty', filesep, 'unlocbox']));
diff --git a/testing/test_gabfirtight.m b/testing/test_gabfirtight.m
index 3f69016c..0273d2c3 100644
--- a/testing/test_gabfirtight.m
+++ b/testing/test_gabfirtight.m
@@ -13,7 +13,6 @@
 
 disp('--- Used subroutines ---');
 
-warning('off','all');
 
 addpath([ltfatbasepath, 'thirdparty', filesep, 'unlocbox']);
 if exist('init_unlocbox.m', 'file')
@@ -94,6 +93,5 @@
 
 end;
 
-warning('on','all');
 close_unlocbox;
 rmpath(([ltfatbasepath, 'thirdparty', filesep, 'unlocbox']));
diff --git a/testing/test_gaboptdual.m b/testing/test_gaboptdual.m
new file mode 100644
index 00000000..7bb2d408
--- /dev/null
+++ b/testing/test_gaboptdual.m
@@ -0,0 +1,127 @@
+function test_failed=test_gaboptdual
+%TEST_GABFIRDUAL  Test GABOPTDUAL
+
+      
+Lr=[24,16,144,144];
+ar=[ 4, 4,  8, 12];
+Mr=[ 12, 16, 72, 48];
+
+test_failed=0;
+tolerance=1e-5;
+
+disp(' ===============  TEST_GABOPTDUAL ================');
+
+disp('--- Used subroutines ---');
+
+addpath([ltfatbasepath, 'thirdparty', filesep, 'unlocbox']);
+if exist('init_unlocbox.m', 'file')
+    init_unlocbox;
+else
+    disp('unlocbox not found. please initialize git submodule via git submodule update --init.')
+end
+
+for ii=1:length(Lr);
+
+  L=Lr(ii);
+  
+  M=Mr(ii);
+  a=ar(ii);
+  b=L/M;
+  N=L/a;
+  c=gcd(a,M);
+  d=gcd(b,N);
+  p=a/c;
+  q=M/c;
+  
+
+  for rtype=1:2
+      
+    if rtype==1
+      rname='REAL ';	
+      g=tester_rand(L,1);
+    else
+      rname='CMPLX';	
+      g=tester_crand(L,1);
+    end;
+ 
+    global LTFAT_TEST_TYPE;
+    if strcmpi(LTFAT_TEST_TYPE,'single')
+        C = gabframebounds(g,a,M);
+        while C>1e3
+%             warning(sprintf(['The frame is too badly conditioned '...
+%                              'for single precision. Cond. num. %d. '...
+%                              ' Trying again.'],C));
+                         
+                         if rtype==1
+                             rname='REAL ';
+                             g=tester_rand(L,1);
+                         else
+                             rname='CMPLX';
+                             g=tester_crand(L,1);
+                         end;
+                         C = gabframebounds(g,a,M);
+        end
+    end
+    
+    
+    gd=gaboptdual(g,a,M);
+
+    for W=1:3
+          
+      if rtype==1
+        f=tester_rand(L,W);
+      else
+        f=tester_crand(L,W);
+      end;
+
+     %--- Test if the window is indeed a dual window-------------
+      
+     [~,o2]=gabdualnorm(g,gd,a,M);
+           [test_failed,fail]=ltfatdiditfail(o2,test_failed);
+      s=sprintf(['DUAL %s L:%3i W:%2i a:%3i b:%3i c:%3i d:%3i p:%3i q:%3i ' ...
+                 '%0.5g %s'],rname,L,W,a,b,c,d,p,q,o2,fail);
+      disp(s)
+      
+      % --- Test reconstruction of IDGT using the dual window. ---
+      cc=dgt(f,g,a,M); 
+      r=idgt(cc,gd,a);  
+      res=norm(f-r,'fro');
+      [test_failed,fail]=ltfatdiditfail(res,test_failed, tolerance);
+      s=sprintf(['REC %s L:%3i W:%2i a:%3i b:%3i c:%3i d:%3i p:%3i q:%3i ' ...
+                 '%0.5g %s'],rname,L,W,a,b,c,d,p,q,res,fail);
+      disp(s)
+      
+      
+      % Test the real valued transform
+      if rtype==1
+        
+        % --- Reference test ---
+        ccreal=dgtreal(f,g,a,M);
+        M2=floor(M/2)+1;
+        
+        cdiff=cc(1:M2,:,:)-ccreal;
+        res=norm(cdiff(:));
+        [test_failed,fail]=ltfatdiditfail(res,test_failed, tolerance);
+        s=sprintf(['REFREAL   L:%3i W:%2i a:%3i b:%3i c:%3i d:%3i p:%3i ' ...
+                   'q:%3i %0.5g %s'],L,W,a,b,c,d,p,q,res,fail);
+        disp(s);
+        
+        % --- Reconstruction test ---
+        
+        rreal=idgtreal(ccreal,real(gd),a,M);
+        
+        res=norm(f-rreal,'fro');
+        [test_failed,fail]=ltfatdiditfail(res,test_failed, tolerance);
+        s=sprintf(['RECREAL   L:%3i W:%2i a:%3i b:%3i c:%3i d:%3i p:%3i ' ...
+                   'q:%3i %0.5g %s'],L,W,a,b,c,d,p,q,res,fail);
+        disp(s)
+        
+      end;
+    end;
+
+  end;  
+
+end;
+
+close_unlocbox;
+rmpath(([ltfatbasepath, 'thirdparty', filesep, 'unlocbox']));
\ No newline at end of file