# \[Dx12\] Dx12 Cannot Enter Full Screen using setres 1920x1080f

**URL:** <https://forums.unrealengine.com/t/dx12-dx12-cannot-enter-full-screen-using-setres-1920x1080f/369513>\
**Category:** Feedback & Requests\
**Tags:** unreal-engine, bug-report, question\
**Created:** [September 6, 2016, 4:39am UTC](https://forums.unrealengine.com/t/dx12-dx12-cannot-enter-full-screen-using-setres-1920x1080f/369513 "2016-09-06T04:39:34Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Rama](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/rama/32/882413_2.png) [@Rama](https://forums.unrealengine.com/u/Rama)\
**Post date:** [September 6, 2016, 4:39am UTC](https://forums.unrealengine.com/t/dx12-dx12-cannot-enter-full-screen-using-setres-1920x1080f/369513/1 "2016-09-06T04:39:34Z")

</div>

Dear Epic,

Repro:

Please make sure you run an independent game instance with the commandline -DX12 flag to ensure you are running DX12 for this repro. Also please make sure your graphics card supports DX12 🙂

1. desktop resolution of 1920x1080 or anything you want really, editor closed, loading game as an independent game instance
2. open console with ~ and type in 1920x1080f
3. The window will become windowed fullscreen, NOT regular fullscreen, you can tell the difference because the screen never briefly goes black like it does with fullscreen in dx11, and also, if you press ALT tab the desktop OS is still there

Please note this may be related to my other Dx12 bug report:

> **[\[Dx12\] Windowed FullScreen instantly 1/2 the fps of windowed at 1920x1080](https://forums.unrealengine.com/questions/482798/dx12-windowed-fullscreen-instantly-12-the-fps-of-w.html)**
>
> Dear Epic, I’ve noticed the following issue when using -DX12 on commandline when launching independent game instance, editor build, with UE4 editor closed the whole time (just the game running) a. at 1920x1080 desktop resolution and windowed mode...

Thanks!

#❤

---

<div class="post-metadata">

**Author:** ![anonymous\_user\_e729f54e](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_e729f54e](https://forums.unrealengine.com/u/anonymous_user_e729f54e)\
**Post date:** [September 6, 2016, 2:55pm UTC](https://forums.unrealengine.com/t/dx12-dx12-cannot-enter-full-screen-using-setres-1920x1080f/369513/2 "2016-09-06T14:55:51Z")

</div>

Hello ,

I was able to reproduce this issue on our end. I have written up a report and I have submitted it to the developers for further consideration. I have also provided a link to the public tracker. Please feel free to check the link for future updates on this issue.

Link: [Unreal Engine Issues and Bug Tracker (UE-35603)](https://issues.unrealengine.com/issue/UE-35603)

Make it a great day

---

<div class="post-metadata">

**Author:** ![Rama](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/rama/32/882413_2.png) [@Rama](https://forums.unrealengine.com/u/Rama)\
**Post date:** [September 10, 2016, 5:07pm UTC](https://forums.unrealengine.com/t/dx12-dx12-cannot-enter-full-screen-using-setres-1920x1080f/369513/3 "2016-09-10T17:07:13Z")

</div>

Thank you for letting me know Rudy!

#❤