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I have Ubuntu 20.04 installed on atom-based tablet ACER Aspire Switch 10. And
bluetooth does not work. In fact it looks like ubuntu does not recognize
bluetooth HW at all. But the system does have bluetooth module which under
windows is recognized as RTK8723 (ACPI\RTK8723\some-id)
At the same time WiFi works without issues (the same module, if I am not
mistaken).
$ lsb_release -d
Description: Ubuntu 20.04 LTS
$ uname -vr
5.4.0-26-generic #30-Ubuntu SMP Mon Apr 20 16:58:30 UTC 2020
$ dmesg | grep -i 8723
[ 8.087918] r8723bs: module is from the staging directory, the quality is
unknown, you have been warned.
[ 8.088914] r8723bs: module verification failed: signature and/or required
key missing - tainting kernel
[ 8.092667] RTL8723BS: module init start
[ 8.092671] RTL8723BS: rtl8723bs v4.3.5.5_12290.20140916_BTCOEX20140507-4E40
[ 8.092673] RTL8723BS: rtl8723bs BT-Coex version = BTCOEX20140507-4E40
[ 8.303955] RTL8723BS: rtw_ndev_init(wlan0)
[ 8.304653] RTL8723BS: module init ret =0
[ 13.200223] rtl8723bs: acquire FW from file:rtlwifi/rtl8723bs_nic.bin
[ 17.832536] RTL8723BS: rtw_set_802_11_connect(wlan0) fw_state = 0x00000008
[ 17.889893] RTL8723BS: start auth
[ 17.892815] RTL8723BS: auth success, start assoc
[ 17.901012] RTL8723BS: rtw_cfg80211_indicate_connect(wlan0) BSS not found !!
[ 17.901053] RTL8723BS: assoc success
[ 17.913846] RTL8723BS: send eapol packet
[ 17.939873] RTL8723BS: send eapol packet
[ 17.942652] RTL8723BS: set pairwise key camid:4, addr:50:c7:bf:31:a1:fa,
kid:0, type:AES
[ 17.944712] RTL8723BS: set group key camid:5, addr:50:c7:bf:31:a1:fa, kid:1,
type:TKIP
$ rfkill list all
0: acer-wireless: Wireless LAN
Soft blocked: no
Hard blocked: no
1: acer-bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
2: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: bot-comment
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RTL8723bs bluetooth not working on 20.04
https://bugs.launchpad.net/bugs/1877192
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