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muerwre.github.io/content/Linux/Fixing lagging USB Headphones.md
Fedor Katurov 2aa87ceb36 added fix for lagging btusb
2023-02-02 19:25:58 +06:00

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When receiving messages like this:

Bluetooth: hci0: ACL packet for unknown connection handle 256

Create /etc/modprobe.d/disable_btusb_autosuspend.conf with following content:

# Disable autosuspend for btusb to make the bluetooth keyboard work again
options btusb enable_autosuspend=n

Then run

mkinitcpio -P

Reboot and debug with

$ systool -v -m btusb | grep autosuspend
	enable_autosuspend = "N" # should be "N"

Also

  • That could be either btusb.enable_autosuspend=n or usbcore.autosuspend=-1
  • TLP has settings for BTUSB, check it to exclude your device from autosuspend
  • There's a guy on ubuntuforums, who wrote solution, which disables autosuspend manually

Refs