title: why do I get "Suspended (tty output)" in one terminal but not in others?
body: <p>Apparently I've done something strange/wrong in a tcsh shell, and now whenever I start an application in the background which prints to stdout the application is suspended (stopped). Weird thing is, this behavior only happens in this terminal; if I do the same in another terminal, the application just keeps running in the background and prints it output to the terminal.</p>
  
  <p>In the "broken" terminal I have to put the suspended application back into foreground (with <code>fg</code>) to have it continue.</p>
  
  <p>Example:</p>
  
  <pre><code>thehost:/tmp/test1(277)&gt; ls -l &amp;
  [3] 1454
  thehost:/tmp/test1(278)&gt; 
  [3]  + Suspended (tty output)        ls --color=auto -l
  thehost:/tmp/test1(278)&gt; fg
  ls --color=auto -l
  total 0
  thehost:/tmp/test1(279)&gt; 
  </code></pre>
  
  <p>Same command executed in another terminal works fine:</p>
  
  <pre><code>thehost:/tmp/test1(8)&gt; ls -l &amp;                                                 
  [1] 2280                                                                        
  thehost:/tmp/test1(9)&gt; total 0                                                 
  
  [1]    Done                          ls --color=auto -l                         
  thehost:/tmp/test1(9)&gt;                                                         
  </code></pre>
  
  <p>Starting a bash in the affected terminal doesn't solve this either:</p>
  
  <pre><code>thehost:/tmp/test1(280)&gt; bash
  oliver@thehost:/tmp/test1$ ls -l &amp;
  [1] 2263
  oliver@thehost:/tmp/test1$ 
  
  [1]+  Stopped                 ls --color=auto -l
  oliver@thehost:/tmp/test1$ fg
  ls --color=auto -l
  total 0
  oliver@thehost:/tmp/test1$ 
  </code></pre>
  
  <p>Getting a new login shell (with <code>su - oliver</code>) doesn't solve this either.</p>
  
  <p>So: what did I do in this terminal to get this behavior, and <strong>what can I do to get back the normal behavior</strong>? It's not really an important problem (I could close the terminal and open a new one), but I'm curious :-)</p>
  
  <p>Happens on Linux RHEL 6.4 64bit, with KDE 4.11.5 and Konsole 2.11.3, and tcsh 6.17.00.</p>