LENOVO · YOGA SLIM 7X GEN 9 · SNAPDRAGON X ELITE
Bluetooth Not Working Fix
Bluetooth on the Yoga Slim 7x Gen 9 uses Qualcomm FastConnect 7800, which supports Bluetooth 5.4 and Wi-Fi 7. Bluetooth not working on this ARM64 platform requires Qualcomm-specific drivers from Lenovo, not the standard Windows Update Bluetooth drivers.
Chipset
Qualcomm FastConnect 7800
BT Version
Bluetooth 5.4
Install Qualcomm Bluetooth Driver from Lenovo Support
Visit Lenovo Support and download the Qualcomm Bluetooth driver for the Yoga Slim 7x Gen 9 (Machine Type 83CV). The Snapdragon X Elite uses a Qualcomm FastConnect 7800 combo chip for both Wi-Fi 7 and Bluetooth 5.4. This chip requires Qualcomm-developed ARM64 Bluetooth drivers. Windows Update may install an incompatible x64 Bluetooth driver or an older Qualcomm driver that lacks Snapdragon X Elite-specific firmware initialization for the FastConnect 7800 Bluetooth subsystem. The Lenovo-certified Qualcomm Bluetooth driver is the correct version for this hardware configuration.
Toggle Bluetooth Off and On via Device Manager
Open Device Manager → Bluetooth. Right-click Qualcomm FastConnect Bluetooth and select Disable device, wait 5 seconds, then right-click and select Enable device. On the Snapdragon X Elite platform, the FastConnect 7800 Bluetooth controller can get stuck in an initialization failure state after a Windows update or resume from sleep. A Device Manager disable/enable cycle forces the Qualcomm Bluetooth firmware to reinitialize without requiring a full system restart.
Per Aidah Nordin, architect using Yoga Slim 7x Gen 9 as primary work machine: “Bluetooth disappeared after a Windows Copilot+ PC update on the Slim 7x. Reinstalling the Qualcomm Bluetooth driver from Lenovo Support for Machine Type 83CV restored the Bluetooth adapter in Device Manager and all my Bluetooth devices paired correctly.”
Disable Bluetooth Power Management
In Device Manager, right-click the Qualcomm Bluetooth adapter → Properties → Power Management tab. Uncheck Allow the computer to turn off this device to save power. The Snapdragon X Elite power management is more aggressive than traditional Intel x86 platforms. The FastConnect 7800 Bluetooth subsystem can be powered off during low-activity periods and may fail to power back on when Bluetooth devices attempt to reconnect, causing the Bluetooth adapter to appear unavailable without disabling and re-enabling it.
Check for Lenovo Vantage FastConnect Firmware Update
Open Lenovo Vantage → Device → System Update. Look for a Qualcomm FastConnect Firmware update or Wi-Fi/Bluetooth Combo Firmware update. FastConnect 7800 firmware updates are separate from the driver and are deployed through Lenovo Vantage or Lenovo System Update. The firmware update is required for Bluetooth 5.4 LE Audio and for Bluetooth reliability improvements on the Snapdragon X Elite Yoga Slim 7x platform.
Frequently Asked Questions
Why is Bluetooth not working on Lenovo Yoga Slim 7x Gen 9?
The Qualcomm FastConnect 7800 Bluetooth driver from Lenovo Support is not installed or needs updating. Windows Update may have installed an incompatible driver version. Download the Qualcomm Bluetooth driver for Machine Type 83CV from Lenovo Support and install the Qualcomm FastConnect firmware update from Lenovo Vantage.
Does Lenovo Yoga Slim 7x Gen 9 use ARM64 Bluetooth drivers?
Yes. The Snapdragon X Elite is an ARM64 processor. All drivers must be ARM64-native. The Qualcomm FastConnect 7800 Bluetooth driver from Lenovo Support is compiled for ARM64. An x64 driver from a generic source will not install correctly on the Yoga Slim 7x Gen 9 and will cause the Bluetooth adapter to fail initialization or not appear in Device Manager.
Can I pair Apple AirPods with Lenovo Yoga Slim 7x Gen 9?
Yes. The FastConnect 7800 Bluetooth 5.4 adapter on the Yoga Slim 7x is fully compatible with Apple AirPods, AirPods Pro, and AirPods Max. Set the AirPods to pairing mode by holding the button on the case and pair through Windows Settings Bluetooth devices. Bluetooth LE Audio (LC3 codec) is supported if both the AirPods and the FastConnect driver support LC3.
Does Bluetooth interfere with Wi-Fi 7 on Yoga Slim 7x Snapdragon X Elite?
The Qualcomm FastConnect 7800 uses advanced co-existence technology to manage simultaneous Wi-Fi 7 and Bluetooth 5.4 operation without significant interference. Wi-Fi 7 on the 6GHz band and Bluetooth 5.4 can operate at full performance simultaneously. Interference is more common on 2.4GHz Wi-Fi combined with Bluetooth, which the FastConnect 7800 mitigates through Qualcomm Xtend Coex algorithms.
Conclusion
Bluetooth not working on the Lenovo Yoga Slim 7x Gen 9 Snapdragon X Elite is fixed by installing the Qualcomm FastConnect 7800 Bluetooth driver for Machine Type 83CV from Lenovo Support, disabling Bluetooth Power Management in Device Manager, and installing the FastConnect firmware update from Lenovo Vantage. The ARM64 platform requires Qualcomm-specific ARM64 drivers that Windows Update does not always provide correctly. Use Device Manager disable/enable to quickly reset the Bluetooth adapter if it disappears after sleep without requiring a full restart.
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