I checked different versions. Here are the results:
beginning right after clicking "add device" until the device manager
says "not able to pair"
Just Debian 6.1.37-1 works.
#1 SMP PREEMPT_DYNAMIC Debian 6.3.11-1 (2023-07-01)
Jul 19 14:47:09 debian plasmashell[1465]: QString::arg: 2 argument(s)
missing in org.kde.bluedevilwizard
Jul 19 14:47:09 debian systemd[1257]: Started
app-org.kde.bluedevilwizard-0310c206d6344b88b616bbf2127308a1.scope -
Bluetooth-Gerät hinzufügen - Bluetooth-Gerät hinzufügen.
Jul 19 14:47:11 debian kernel: rtw_8821ce 0000:03:00.0: firmware failed
to leave lps state
Jul 19 14:47:13 debian wpa_supplicant[855]: wlp3s0: CTRL-EVENT-BEACON-LOSS
Jul 19 14:47:13 debian kernel: rtw_8821ce 0000:03:00.0: failed to send
h2c command
Jul 19 14:47:14 debian wpa_supplicant[855]: wlp3s0: CTRL-EVENT-BEACON-LOSS
Jul 19 14:47:15 debian kernel: rtw_8821ce 0000:03:00.0: firmware failed
to leave lps state
Jul 19 14:47:17 debian kernel: rtw_8821ce 0000:03:00.0: firmware failed
to leave lps state
Jul 19 14:47:17 debian kernel: rtw_8821ce 0000:03:00.0: failed to send
h2c command
Jul 19 14:47:19 debian kernel: rtw_8821ce 0000:03:00.0: coex request
time out
Jul 19 14:47:19 debian systemd[1257]: Reached target bluetooth.target -
Bluetooth.
Jul 19 14:47:19 debian kernel: Bluetooth: hci0: unexpected event for
opcode 0xfc19
Jul 19 14:47:19 debian kernel: Bluetooth: hci0: unexpected event for
opcode 0x2016
Jul 19 14:47:19 debian kernel: rtw_8821ce 0000:03:00.0: failed to send
h2c command
Jul 19 14:47:19 debian kernel: rtw_8821ce 0000:03:00.0: coex request
time out
Jul 19 14:47:19 debian kernel: rtw_8821ce 0000:03:00.0: firmware failed
to leave lps state
Jul 19 14:47:20 debian kernel: Bluetooth: hci0: unexpected cc 0x0c7c
length: 1 < 3
Jul 19 14:47:20 debian kernel: Bluetooth: hci0: unexpected SMP command
0x06 from d1:cf:2f:cf:76:25
Jul 19 14:47:20 debian kernel: Bluetooth: hci0: unexpected SMP command
0x07 from d1:cf:2f:cf:76:25
Jul 19 14:47:20 debian kernel: Bluetooth: hci0: unexpected SMP command
0x08 from d1:cf:2f:cf:76:25
Jul 19 14:47:20 debian kernel: Bluetooth: hci0: unexpected SMP command
0x09 from d1:cf:2f:cf:76:25
Jul 19 14:47:21 debian kernel: rtw_8821ce 0000:03:00.0: firmware failed
to leave lps state
Jul 19 14:47:23 debian wpa_supplicant[855]: wlp3s0:
CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-90 noise=9999 txrate=19500
Jul 19 14:47:23 debian kernel: rtw_8821ce 0000:03:00.0: firmware failed
to leave lps state
Jul 19 14:47:23 debian bluetoothd[794]: src/service.c:service_accept()
input-hog profile accept failed for D1:CF:2F:CF:76:25
Jul 19 14:47:32 debian wpa_supplicant[855]: wlp3s0:
CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-66 noise=9999 txrate=19500
Jul 19 14:47:35 debian kernel: rtw_8821ce 0000:03:00.0: firmware failed
to leave lps state
Jul 19 14:47:39 debian kernel: rtw_8821ce 0000:03:00.0: firmware failed
to leave lps state
Jul 19 14:47:41 debian kernel: rtw_8821ce 0000:03:00.0: firmware failed
to leave lps state
Jul 19 14:47:43 debian kernel: rtw_8821ce 0000:03:00.0: firmware failed
to leave lps state
Jul 19 14:47:43 debian plasmashell[2082]: kf.bluezqt: PendingCall Error:
"Did not receive a reply. Possible causes include: the remote
application did not send a reply, the message bus security policy
blocked the reply, the reply timeout expired, or the network connection
was broken."
Jul 19 14:47:45 debian bluetoothd[794]:
src/device.c:set_wake_allowed_complete() Set device flags return status:
Invalid Parameters
#1 SMP PREEMPT_DYNAMIC Debian 6.3.7-1 (2023-06-12)
Jul 19 14:44:32 debian kernel: Bluetooth: hci0: unexpected event for
opcode 0xfc19
Jul 19 14:44:32 debian kernel: Bluetooth: hci0: unexpected event for
opcode 0x2016
Jul 19 14:44:32 debian systemd[1246]: Reached target bluetooth.target -
Bluetooth.
Jul 19 14:44:33 debian kernel: Bluetooth: hci0: unexpected cc 0x0c7c
length: 1 < 3
Jul 19 14:44:33 debian kernel: Bluetooth: hci0: unexpected SMP command
0x06 from d1:cf:2f:cf:76:24
Jul 19 14:44:33 debian kernel: Bluetooth: hci0: unexpected SMP command
0x07 from d1:cf:2f:cf:76:24
Jul 19 14:44:33 debian kernel: Bluetooth: hci0: unexpected SMP command
0x08 from d1:cf:2f:cf:76:24
Jul 19 14:44:33 debian kernel: Bluetooth: hci0: unexpected SMP command
0x09 from d1:cf:2f:cf:76:24
Jul 19 14:44:34 debian systemd[1]: pcscd.service: Deactivated successfully.
Jul 19 14:44:37 debian bluetoothd[798]: src/service.c:service_accept()
input-hog profile accept failed for D1:CF:2F:CF:76:24
Jul 19 14:44:58 debian plasmashell[2075]: kf.bluezqt: PendingCall Error:
"Did not receive a reply. Possible causes include: the remote
application did not send a reply, the message bus security policy
blocked the reply, the reply timeout expired, or the network connection
was broken."
Jul 19 14:45:00 debian bluetoothd[798]:
src/device.c:set_wake_allowed_complete() Set device flags return status:
Invalid Parameters
Jul 19 14:45:00 debian org_kde_powerdevil[1477]: QObject::disconnect:
Unexpected nullptr parameter
Jul 19 14:45:00 debian org_kde_powerdevil[1477]: QObject::disconnect:
Unexpected nullptr parameter
Jul 19 14:45:00 debian kernel: Bluetooth: hci0: No such LE device
d1:cf:2f:cf:76:24 (0x1)
Jul 19 14:45:00 debian systemd[1246]:
app-org.kde.bluedevilwizard-b309fd061a0245ffa2a85677b9652885.scope:
Consumed 1.966s CPU time.
#1 SMP PREEMPT_DYNAMIC Debian 6.3.5-1~exp1 (2023-05-31)
Bluetooth: hci0: unexpected event for opcode 0xfc19
Jul 19 14:41:15 debian kernel: Bluetooth: hci0: unexpected event for
opcode 0x2016
Jul 19 14:41:15 debian systemd[1250]: Reached target bluetooth.target -
Bluetooth.
Jul 19 14:41:16 debian kernel: Bluetooth: hci0: unexpected cc 0x0c7c
length: 1 < 3
Jul 19 14:41:16 debian kernel: Bluetooth: hci0: unexpected SMP command
0x06 from d1:cf:2f:cf:76:23
Jul 19 14:41:16 debian kernel: Bluetooth: hci0: unexpected SMP command
0x07 from d1:cf:2f:cf:76:23
Jul 19 14:41:16 debian kernel: Bluetooth: hci0: unexpected SMP command
0x08 from d1:cf:2f:cf:76:23
Jul 19 14:41:16 debian kernel: Bluetooth: hci0: unexpected SMP command
0x09 from d1:cf:2f:cf:76:23
Jul 19 14:41:20 debian bluetoothd[816]: src/service.c:service_accept()
input-hog profile accept failed for D1:CF:2F:CF:76:23
Jul 19 14:41:32 debian systemd[1]: pcscd.service: Deactivated successfully.
Jul 19 14:41:35 debian systemd[1]: systemd-hostnamed.service:
Deactivated successfully.
Jul 19 14:41:36 debian kwin_wayland_wrapper[1343]: qml:
PlasmaExtras.ScrollArea is deprecated. Use PlasmaComponents3.ScrollView
instead.
Jul 19 14:41:36 debian kwin_wayland_wrapper[1343]: This plugin does not
support raise()
Jul 19 14:41:40 debian plasmashell[1980]: kf.bluezqt: PendingCall Error:
"Did not receive a reply. Possible causes include: the remote
application did not send a reply, the message bus security policy
blocked the reply, the reply timeout expired, or the network connection
was broken."
Jul 19 14:41:43 debian bluetoothd[816]:
src/device.c:set_wake_allowed_complete() Set device flags return status:
Invalid Parameters
Jul 19 14:41:43 debian org_kde_powerdevil[1495]: QObject::disconnect:
Unexpected nullptr parameter
Jul 19 14:41:43 debian org_kde_powerdevil[1495]: QObject::disconnect:
Unexpected nullptr parameter
Jul 19 14:41:43 debian kernel: Bluetooth: hci0: No such LE device
d1:cf:2f:cf:76:23 (0x1)
Jul 19 14:41:43 debian systemd[1250]:
app-org.kde.bluedevilwizard-e45e23eaac1342338cc78f3fbbe2a0d9.scope:
Consumed 2.006s CPU time.
#1 SMP PREEMPT_DYNAMIC Debian 6.1.37-1 (2023-07-03)
Jul 16 09:44:41 debian kernel: rtw_8821ce 0000:03:00.0: failed to
send h2c command
Jul 16 09:44:41 debian kernel: rtw_8821ce 0000:03:00.0: coex
request time out
Jul 16 09:44:45 debian kernel: Bluetooth: hci0: unexpected event
for opcode
Jul 16 09:44:45 debian kernel: Bluetooth: hci0: unexpected event
for opcode 0x2016
Jul 16 09:44:45 debian kernel: rtw_8821ce 0000:03:00.0: firmware
failed to leave lps state
