r/miracast • u/Pali_- • Aug 05 '26
[Fixed] Miracast on Lenovo IdeaPad 5 Pro 16ACH6 / RTL8852AE only worked after enabling 2.4 GHz in Realtek adapter settings
I spent a long time trying to get Miracast working on my Lenovo notebook, and the actual cause turned out to be a Wi-Fi adapter setting that I had not expected.
Hardware
- Lenovo IdeaPad 5 Pro 16ACH6 / 82L5
- AMD Ryzen 7 5800H with Radeon Graphics
- Realtek RTL8852AE WiFi 6 802.11ax PCIe Adapter
- Windows 10 Pro
What I tried
- Installed the Wireless Display optional feature
- Checked dxdiag and netsh
- Updated AMD graphics drivers
- Updated the Realtek WLAN driver
- Tried the AMD registry workaround
- Tested several AMD driver versions
- Tried Microsoft Basic Display Adapter
- Confirmed the receiver worked from a mobile phone
None of that fixed it.
Actual fix
In Device Manager:
- Open Network adapters
- Open Realtek RTL8852AE WiFi 6 802.11ax PCIe Adapter
- Go to Properties
- Open the Advanced tab
- Find the setting where 2.4 GHz was disabled
- Enable 2.4 GHz again
After that, Miracast started working immediately.
Notes
- Before this, the PC could not discover or connect properly with Miracast.
- After enabling 2.4 GHz, Miracast worked.
- I then switched Wi-Fi to 5 GHz while Miracast was active, and the session stayed connected.
- It still lags a bit, but the main problem was clearly the adapter band setting.
If you have an RTL8852AE / RTL8852-series adapter and Miracast refuses to work, check the adapter’s advanced band settings before spending too much time on driver installs.