# When I launch a full screen HDR app (mpv, for example) while I have bitdepth 10, hyprland doesn't revert back to SDR when app is exited or full screen is exited, leaving an insanely bright display

**URL:** <http://forum.hypr.land/t/when-i-launch-a-full-screen-hdr-app-mpv-for-example-while-i-have-bitdepth-10-hyprland-doesnt-revert-back-to-sdr-when-app-is-exited-or-full-screen-is-exited-leaving-an-insanely-bright-display/1454>\
**Category:** Bugs / FRs / Support\
**Tags:** help, hyprland, bug, renderer\
**Created:** [March 7, 2026, 9:43pm UTC](http://forum.hypr.land/t/when-i-launch-a-full-screen-hdr-app-mpv-for-example-while-i-have-bitdepth-10-hyprland-doesnt-revert-back-to-sdr-when-app-is-exited-or-full-screen-is-exited-leaving-an-insanely-bright-display/1454 "2026-03-07T21:43:53Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![gsgleason](http://forum.hypr.land/letter_avatar_proxy/v4/letter/g/b38774/32.png) [@gsgleason](http://forum.hypr.land/u/gsgleason)\
**Post date:** [March 7, 2026, 9:43pm UTC](http://forum.hypr.land/t/when-i-launch-a-full-screen-hdr-app-mpv-for-example-while-i-have-bitdepth-10-hyprland-doesnt-revert-back-to-sdr-when-app-is-exited-or-full-screen-is-exited-leaving-an-insanely-bright-display/1454/1 "2026-03-07T21:43:53Z")

</div>

> **Hyprland version**
>
> ```auto
> Hyprland 0.54.1 built from branch v0.54.1 at commit 4b07770b9ef1cceb2e6f56d33538aaffb9186b9c clean ([gha] Nix: update inputs).
> Date: Tue Mar 3 21:06:41 2026
> Tag: v0.54.1, commits: 6979
> 
> Libraries:
> Hyprgraphics: built against 0.5.0, system has 0.5.0
> Hyprutils: built against 0.11.0, system has 0.11.0
> Hyprcursor: built against 0.1.13, system has 0.1.13
> Hyprlang: built against 0.6.8, system has 0.6.8
> Aquamarine: built against 0.10.0, system has 0.10.0
> 
> Version ABI string: 4b07770b9ef1cceb2e6f56d33538aaffb9186b9c_aq_0.10_hu_0.11_hg_0.5_hc_0.1_hlg_0.6
> no flags were set
> 
> ```

## Describe your issue / feature…

If I start mpv with an hdr movie in full screen mode, my monitor switches to HDR. This is good.

However, if I exit fullscreen mode or kill the app, it stays in hdr mode with extreme brightness.

Monitor config:

```auto
monitorv2 {
  output = DP-1
  mode = 2560x1440@144
  vrr = 3
  bitdepth = 10
  cm = auto
}

```

If I comment out the bitdepth, it correctly reverts back to SDR mode when exiting fullscreen hdr app.

Monitor is AOC Q27G3XMN

Arch Linux

---

<div class="post-metadata">

**Author:** ![sononio](http://forum.hypr.land/letter_avatar_proxy/v4/letter/s/9de0a6/32.png) [@sononio](http://forum.hypr.land/u/sononio)\
**Post date:** [March 22, 2026, 8:45pm UTC](http://forum.hypr.land/t/when-i-launch-a-full-screen-hdr-app-mpv-for-example-while-i-have-bitdepth-10-hyprland-doesnt-revert-back-to-sdr-when-app-is-exited-or-full-screen-is-exited-leaving-an-insanely-bright-display/1454/2 "2026-03-22T20:45:28Z")

</div>

I am experiencing the same system behavior with HDR when bit depth 10 is enabled.

System specs:

- Monitor: Aorus MO34WQC2
- Graphics card: AMD RX 9070 XT
- Hyprland: 0.54.2
- OS: nixos

Config:

```auto
monitorv2 {
  output = DP-2
  mode = 3440x1440@240
  position = 0x0
  scale = 1
  bitdepth = 10
  cm = auto
}

render {
  cm_enabled = true
  cm_auto_hdr = 2
  cm_fs_passthrough = 2
  direct_scanout = 0
}

```

---

<div class="post-metadata">

**Author:** ![TeaJhay](http://forum.hypr.land/letter_avatar_proxy/v4/letter/t/c5a1d2/32.png) [@TeaJhay](http://forum.hypr.land/u/TeaJhay)\
**Post date:** [June 24, 2026, 9:59am UTC](http://forum.hypr.land/t/when-i-launch-a-full-screen-hdr-app-mpv-for-example-while-i-have-bitdepth-10-hyprland-doesnt-revert-back-to-sdr-when-app-is-exited-or-full-screen-is-exited-leaving-an-insanely-bright-display/1454/3 "2026-06-24T09:59:48Z")

</div>

Ditto this, not just mpv however.

whether cm is set to auto or wide, fix only seems to be setting bit depth to 8 and then reloading the monitors config. auto hdr option, shader options or anything do not effect. Everything does work correctly if cm is set to srg (or presumably any that don’t require 10 bit depth)

Currently have a script that runs after playing HDR games that sets bit depth to 8 and then reloads my config.

Still using hyprlang for now, not ready for lua yet.

> monitor=HDMI-A-1,3840x2160@120.0,1920x0,1.5,cm,wide  
> monitor=DP-3,1920x1080@60.0,0x0,1.0
> 
> #monitor=HDMI-A-1,disable  
> #monitor=DP-3,disable
> 
> misc {  
> vrr = 1  
> }  
> render {  
> cm\_auto\_hdr = 2 # 0=off, 1=auto, 2=always  
> }  
> xwayland {  
> force\_zero\_scaling = true  
> }