我有一款罗技无线耳机，可以以两种不同的模式工作：不带麦克风的高保真立体声音频（A2DP）和带麦克风的耳机（HSP/HFP）。
A2DP 模式可以工作，但是当我尝试切换到 HSP/HFP 时，耳机会静音并且任何背景媒体都会冻结，直到我返回 A2DP。
这是我切换模式时获得的 dsmeg 输出：
[ 82.437350] ACPI BIOS Error (bug): AE_AML_PACKAGE_LIMIT, Index (0x0000000FF) is beyond end of object (length 0xF) (20190816/exoparg2-393)
[ 82.437366] No Local Variables are initialized for Method [GINF]
[ 82.437367] Initialized Arguments for Method [GINF]: (2 arguments defined for method invocation)
[ 82.437368] Arg0: 00000000bd65d180 <Obj> Integer 00000000000000FF
[ 82.437370] Arg1: 00000000b898f041 <Obj> Integer 0000000000000000
[ 82.437374] ACPI Error: Aborting method \_SB.GINF due to previous error (AE_AML_PACKAGE_LIMIT) (20190816/psparse-529)
[ 82.437378] ACPI Error: Aborting method \_SB.GADR due to previous error (AE_AML_PACKAGE_LIMIT) (20190816/psparse-529)
[ 82.437381] ACPI Error: Aborting method \_SB.SGOV due to previous error (AE_AML_PACKAGE_LIMIT) (20190816/psparse-529)
[ 82.437384] ACPI Error: Aborting method \_SB.CGWR due to previous error (AE_AML_PACKAGE_LIMIT) (20190816/psparse-529)
[ 82.437387] ACPI Error: Aborting method \_SB.TBFP due to previous error (AE_AML_PACKAGE_LIMIT) (20190816/psparse-529)
[ 82.437390] ACPI Error: Aborting method \_SB.WMTF.WMTF due to previous error (AE_AML_PACKAGE_LIMIT) (20190816/psparse-529)
[ 82.441555] ACPI BIOS Error (bug): AE_AML_PACKAGE_LIMIT, Index (0x0000000FF) is beyond end of object (length 0xF) (20190816/exoparg2-393)
[ 82.441571] No Local Variables are initialized for Method [GINF]
[ 82.441572] Initialized Arguments for Method [GINF]: (2 arguments defined for method invocation)
[ 82.441573] Arg0: 000000007a385f3f <Obj> Integer 00000000000000FF
[ 82.441576] Arg1: 00000000c7556536 <Obj> Integer 0000000000000000
[ 82.441579] ACPI Error: Aborting method \_SB.GINF due to previous error (AE_AML_PACKAGE_LIMIT) (20190816/psparse-529)
[ 82.441583] ACPI Error: Aborting method \_SB.GADR due to previous error (AE_AML_PACKAGE_LIMIT) (20190816/psparse-529)
[ 82.441586] ACPI Error: Aborting method \_SB.SGOV due to previous error (AE_AML_PACKAGE_LIMIT) (20190816/psparse-529)
[ 82.441589] ACPI Error: Aborting method \_SB.CGWR due to previous error (AE_AML_PACKAGE_LIMIT) (20190816/psparse-529)
[ 82.441592] ACPI Error: Aborting method \_SB.TBFP due to previous error (AE_AML_PACKAGE_LIMIT) (20190816/psparse-529)
[ 82.441595] ACPI Error: Aborting method \_SB.WMTF.WMTF due to previous error (AE_AML_PACKAGE_LIMIT) (20190816/psparse-529)
[ 92.294393] input: Logitech Wireless Headset (AVRCP) as /devices/virtual/input/input41
PC 规格
Acer A515-54g（Bios v1.17 - 最新）
无线网络：英特尔WIFI6 AX201
英特尔酷睿 i5 10210u
与 Windows 10 双启动（已禁用快速启动）
编辑：
ACPI 错误可能是由驱动程序问题引起的。英特尔 AX201 卡是一款非常新的卡，系统无法正确检测到它（正如我在这里）。也许这些问题在某种程度上是相关的。
答案1
我也遇到过这个问题。pulseaudio 和 bluez 确认存在错误。请报告它对您造成的影响：https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1878194
答案2
我刚从 19.10 升级到 20.04 后就遇到了同样的问题。
当蓝牙耳机连接时，它会自动配置为 HSP/HSP，但它不适用于此配置（在 19.10 中可以）。
答案3
我终于让我的蓝牙耳机在 HSP 模式下工作，这意味着麦克风也可以工作。
第一步：确保你的蓝牙固件
当我执行命令时：sudo dmesg | grep -i bluetooth
我收到了类似的消息：
蓝牙 hci1：brcm/BCM20702A1-0b05-17cb.hcd 的直接固件加载失败，错误为 -2
安装后broadcom-bt-固件相同的命令返回
[21.883358]蓝牙：hci0：BCM20702A1'brcm/BCM20702A1-0b05-17cb.hcd'补丁
第二步：编辑 /etc/pulse/default.pa
并注释掉 module-bluetooth 周围的 ifexist 和 endif，这样策略和发现就会自动加载
### Automatically load driver modules for Bluetooth hardware
#.ifexists module-bluetooth-policy.so
load-module module-bluetooth-policy
#.endif
#.ifexists module-bluetooth-discover.so
#load-module module-bluetooth-discover headset=ofono
load-module module-bluetooth-discover
#.endif
第三步：清除并重新安装脉冲
我跟着这个 awsner
sudo apt-get --purge --reinstall install pulseaudio
并确保/etc/pulse/client.conf你的autospawn = yes
比reboot