> For the complete documentation index, see [llms.txt](https://huataihuang.gitbook.io/cloud-atlas-draft/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://huataihuang.gitbook.io/cloud-atlas-draft/develop/raspberry_pi/raspberry_pi_video_option.md).

# 树莓派视频输出配置

在配置 [树莓派的USB存储](https://github.com/huataihuang/cloud-atlas-draft/tree/1c3032dabf4e4825427dc1abc9a85354d1ded2f2/develop/raspberry_pi/raspberry_pi_usb_problem/README.md) 有人提到过通过调整 USB-HDMI 来解决，我了解了一下如何调整树莓派的视频输出：

* 配置在 [config.txt](https://www.raspberrypi.org/documentation/configuration/config-txt/video.md) 设置

## HDMI模式

* 配置 `hdmi_safe=1` 是一种安全模式，提供了最大的HDMI兼容，相当于

```bash
hdmi_force_hotplug=1
hdmi_ignore_edid=0xa5000080
config_hdmi_boost=4
hdmi_group=2
hdmi_mode=4
disable_overscan=0
overscan_left=24
overscan_right=24
overscan_top=24
overscan_bottom=24
```

* 可以结合 HDMI groups 和 mode 来设置分辨率


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