# ⁨2.1.66 - Card Not Revealing

**URL:** <https://forums.ankiweb.net/t/2-1-66-card-not-revealing/33603>\
**Category:** Help\
**Created:** [August 25, 2023, 12:28pm UTC](https://forums.ankiweb.net/t/2-1-66-card-not-revealing/33603 "2023-08-25T12:28:18Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![andre\_angelo](https://avatars.discourse-cdn.com/v4/letter/a/58f4c7/32.png) [@andre\_angelo](https://forums.ankiweb.net/u/andre_angelo)\
**Post date:** [August 25, 2023, 12:28pm UTC](https://forums.ankiweb.net/t/2-1-66-card-not-revealing/33603/1 "2023-08-25T12:28:18Z")

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On version 2.1.66 of Anki (just installed today), I’m having an error revealing cards. I can recreate it frequently, but I’m not sure what’s exactly triggering it. It happens with multiple cards, though not always the same ones.

(video) When I click my deck and open the first card, I hit spacebar to reveal the answer, but it does not show. I wait to see if it loads, but nothing happens. If I click and drag downward from the question, it is revealed.

@dae Maybe you could check out this card and see if there is a specific error with it? I’m not sure what it could be though.

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**Author:** ![cjdduarte](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/cjdduarte/32/29286_2.png) [@cjdduarte](https://forums.ankiweb.net/u/cjdduarte)\
**Post date:** [August 25, 2023, 5:13pm UTC](https://forums.ankiweb.net/t/2-1-66-card-not-revealing/33603/2 "2023-08-25T17:13:17Z")

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I updated today to 2.1.66.

This happened twice today among 60 cards studied.  
I can’t reproduce this intentionally, but it happened.

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**Author:** ![cjdduarte](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/cjdduarte/32/29286_2.png) [@cjdduarte](https://forums.ankiweb.net/u/cjdduarte)\
**Post date:** [August 25, 2023, 9:03pm UTC](https://forums.ankiweb.net/t/2-1-66-card-not-revealing/33603/3 "2023-08-25T21:03:32Z")

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It just happened again. I kept clicking on the screen and it appeared.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/anki2/original/2X/c/c7d2e2ac7ac83d5b1b368adb2e5e3d7365e97b01.png)

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**Author:** ![dae](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/dae/32/65_2.png) [@dae](https://forums.ankiweb.net/u/dae)\
**Post date:** [August 27, 2023, 6:13am UTC](https://forums.ankiweb.net/t/2-1-66-card-not-revealing/33603/4 "2023-08-27T06:13:56Z")

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Hooray for the never-ending graphics driver bugs.

Please open cmd.exe and type the following

```auto
set QSG_INFO=1
cd \path\to\anki
anki

```

Replace \path\to\anki with the place you have Anki installed. Please paste the startup text you get here.

Then please try:

```auto
set QSG_RHI_BACKEND=opengl
anki

```

and

```auto
set QSG_RHI_BACKEND=vulkan
anki

```

and finally

```auto
set QT_OPENGL=software
anki

```

Do any of those help?

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<div class="post-metadata">

**Author:** ![cjdduarte](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/cjdduarte/32/29286_2.png) [@cjdduarte](https://forums.ankiweb.net/u/cjdduarte)\
**Post date:** [August 27, 2023, 10:55am UTC](https://forums.ankiweb.net/t/2-1-66-card-not-revealing/33603/5 "2023-08-27T10:55:47Z")

</div>

> Replace \path\to\anki with the place you have Anki installed. Please paste the startup text you get here.

Initial setup…  
Running with temporary Qt5 compatibility shims.  
Run with DISABLE\_QT5\_COMPAT=1 to confirm compatibility with Qt6.  
Preparing to run…  
Qt debug: FLIP\_\* swapchain supported = true, ALLOW\_TEARING supported = true  
Qt debug: Default swap effect: FLIP\_DISCARD  
Qt debug: Adapter 0: ‘AMD Radeon™ Graphics’ (vendor 0x1002 device 0x1638 flags 0x0)  
Qt debug: using this adapter  
Qt debug: Adapter 1: ‘Microsoft Basic Render Driver’ (vendor 0x1414 device 0x8C flags 0x2)  
Starting main loop…  
Qt debug: rhi texture atlas dimensions: 512x512  
Qt debug: rhi texture atlas dimensions: 512x512  
Qt debug: rhi texture atlas dimensions: 512x512

> set QSG\_RHI\_BACKEND=vulkan  
> anki

Vulkan not work

> set QT\_OPENGL=software  
> anki

Initial setup…  
Running with temporary Qt5 compatibility shims.  
Run with DISABLE\_QT5\_COMPAT=1 to confirm compatibility with Qt6.  
Unknown key “software” for QSG\_RHI\_BACKEND, falling back to default backend.  
Preparing to run…  
Qt debug: FLIP\_\* swapchain supported = true, ALLOW\_TEARING supported = true  
Qt debug: Default swap effect: FLIP\_DISCARD  
Qt debug: Adapter 0: ‘AMD Radeon™ Graphics’ (vendor 0x1002 device 0x1638 flags 0x0)  
Qt debug: using this adapter  
Qt debug: Adapter 1: ‘Microsoft Basic Render Driver’ (vendor 0x1414 device 0x8C flags 0x2)  
Starting main loop…  
Qt debug: rhi texture atlas dimensions: 512x512  
Qt debug: rhi texture atlas dimensions: 512x512  
Qt debug: rhi texture atlas dimensions: 512x512

> set QSG\_RHI\_BACKEND=opengl  
> anki

Initial setup…  
Running with temporary Qt5 compatibility shims.  
Run with DISABLE\_QT5\_COMPAT=1 to confirm compatibility with Qt6.  
Preparing to run…  
Qt debug: Created OpenGL context QSurfaceFormat(version 4.6, options QFlagsQSurfaceFormat::FormatOption(DeprecatedFunctions), depthBufferSize 32, redBufferSize 8, greenBufferSize 8, blueBufferSize 8, alphaBufferSize 8, stencilBufferSize 8, samples 0, swapBehavior QSurfaceFormat::DoubleBuffer, swapInterval 1, colorSpace QColorSpace(), profile QSurfaceFormat::CompatibilityProfile)  
Qt debug: OpenGL VENDOR: ATI Technologies Inc. RENDERER: AMD Radeon™ Graphics VERSION: 4.6.0 Compatibility Profile Context 23.8.1.230810  
Starting main loop…  
Qt debug: rhi texture atlas dimensions: 512x512  
Qt debug: rhi texture atlas dimensions: 512x512  
Qt debug: rhi texture atlas dimensions: 512x512

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<div class="post-metadata">

**Author:** ![cjdduarte](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/cjdduarte/32/29286_2.png) [@cjdduarte](https://forums.ankiweb.net/u/cjdduarte)\
**Post date:** [August 27, 2023, 9:35pm UTC](https://forums.ankiweb.net/t/2-1-66-card-not-revealing/33603/6 "2023-08-27T21:35:44Z")

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@dae, today I studied 140 cards and the error did not occur. I used OpenGL mode.  
Did the logs above indicate any errors in this 2.1.66 version?

This didn’t happen until version 2.1.65.

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<div class="post-metadata">

**Author:** ![dae](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/dae/32/65_2.png) [@dae](https://forums.ankiweb.net/u/dae)\
**Post date:** [August 28, 2023, 4:47am UTC](https://forums.ankiweb.net/t/2-1-66-card-not-revealing/33603/7 "2023-08-28T04:47:31Z")

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I’ve logged this on [Consider exposing gfx driver options in the GUI for Qt6 · Issue #2625 · ankitects/anki · GitHub](https://github.com/ankitects/anki/issues/2625)

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex002/uploads/anki2/original/1X/8f1279ababc5879d54e4838989f606cfe55af8c7.jpeg) [@system](https://forums.ankiweb.net/u/system)\
**Post date:** [September 27, 2023, 4:48am UTC](https://forums.ankiweb.net/t/2-1-66-card-not-revealing/33603/8 "2023-09-27T04:48:08Z")

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