# 卡片切换时，画面显示重叠或不出来，是什么问题？

**URL:** <https://forums.ankiweb.net/t/topic/33947>\
**Category:** Help\
**Created:** [September 5, 2023, 1:59am UTC](https://forums.ankiweb.net/t/topic/33947 "2023-09-05T01:59:43Z")\
**Posts on this page:** 1\
**Showing post:** 2

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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:** [September 5, 2023, 11:32pm UTC](https://forums.ankiweb.net/t/topic/33947/2 "2023-09-05T23:32:13Z")

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> [@⁨2.1.66 - Card Not Revealing](https://forums.ankiweb.net/t/2-1-66-card-not-revealing/33603/4):
>
> Hooray for the never-ending graphics driver bugs. Please open cmd.exe and type the following 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: set QSG\_RHI\_BACKEND=opengl anki and set QSG\_RHI\_BACKEND=vulkan anki and finally set QT\_OPENGL=software anki Do any of those help?

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