# Time out respond for displayport - zcu104

**URL:** <https://discuss.pynq.io/t/time-out-respond-for-displayport-zcu104/2136>\
**Category:** Support\
**Created:** [December 14, 2020, 10:05am UTC](https://discuss.pynq.io/t/time-out-respond-for-displayport-zcu104/2136 "2020-12-14T10:05:44Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![mizan](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/mizan/32/2119_2.png) [@mizan](https://discuss.pynq.io/u/mizan)\
**Post date:** [December 14, 2020, 10:05am UTC](https://discuss.pynq.io/t/time-out-respond-for-displayport-zcu104/2136/1 "2020-12-14T10:05:44Z")

</div>

Last time I was facing a problem with HDMI output when it was not connected. It was not showing any error and being stuck in the same position. Which was solved with @PeterOgden suggestion on changing the file responsible for HDMI.

The same type of problem I am facing with display port, but not time out error, and it shows the following errors and quite the program directly. But I want to run it even the display port cable is not connected. I have tried to modify the DisplayPort class file I found in the library. But it is not showing any effect on changing the file.

> Ignoring unconnected port  
> Ignoring unconnected port  
> terminate called after throwing an instance of ‘std::runtime\_error’  
> what(): Could not find compatible mode  
> Aborted (core dumped)

---

<div class="post-metadata">

**Author:** ![mizan](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/mizan/32/2119_2.png) [@mizan](https://discuss.pynq.io/u/mizan)\
**Post date:** [December 17, 2020, 5:59am UTC](https://discuss.pynq.io/t/time-out-respond-for-displayport-zcu104/2136/2 "2020-12-17T05:59:03Z")

</div>

Is there anyone who could help me with this?