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+## Full KMS Support
+
+**Require Kernel Version >=5.10.78-Release-OPENFANS+20211112-v8**
+
+1.Edit Config.txt, change all "**dtoverlay=vc4-fkms-v3d,cma-256**" to "**dtoverlay=vc4-kms-v3d,cma-256**" ;
+
+2.Add "**disable_fw_kms_setup=1**" to Config.txt
+
+----
+
+#### Note:
+
+The log of dmesg:
+
+```
+...
+vc4_hdmi fef00700.hdmi: Could not register sound card: -517
+...
+hdmi-audio-codec hdmi-audio-codec.8.auto: ASoC: error at snd_soc_dai_startup on i2s-hifi: -19
+...
+```
+
+These "**errors**" are expected and can be **ignored**.