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New: RTL8822CE cannot discover pair-able devices

Bug 204707 [email protected] 1 participant 4 messages Aug 27, 2019 – Sep 5, 2019 Bluetooth drivers

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https://bugzilla.kernel.org/show_bug.cgi?id=204707

            Bug ID: 204707
           Summary: RTL8822CE cannot discover pair-able devices
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.3.0-rc6
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Bluetooth
          Assignee: [email protected]
          Reporter: [email protected]
        Regression: No

Created attachment 284625
--> https://bugzilla.kernel.org/attachment.cgi?id=284625&action=edit
The dmesg file with 5.3.0-rc6 kernel

We have a laptop equipped with Intel i3-10110U CPU and Realtek 8822CE WiFi/BT combo chip.

I have tested with 5.3.0-rc6 mainline kernel and the firmware from the commits:
aa703aad295d rtl_bt: Update RTL8822C BT FW to V0x098A_94A4 7e431c5dee00 rtw88: RTL8822C: add WoW firmware v7.3
2dc7023fd529 rtw88: RTL8822C: update rtw8822c_fw.bin to v7.3

However, system cannot discover any pair-able BT device. For example, our "pulse" BT headset, which can be discovered and paired on other laptops.

bluetoothctl
Agent registered
[bluetooth]# show
Controller 3C:91:80:AA:80:E0 (public)

        Name: endless
        Alias: endless
        Class: 0x0008010c
        Powered: yes
        Discoverable: yes
        Pairable: yes
        UUID: Audio Source              (0000110a-0000-1000-8000-00805f9b34fb)
        UUID: Generic Attribute Profile (00001801-0000-1000-8000-00805f9b34fb)
        UUID: Generic Access Profile    (00001800-0000-1000-8000-00805f9b34fb)
        UUID: PnP Information           (00001200-0000-1000-8000-00805f9b34fb)
        UUID: A/V Remote Control Target (0000110c-0000-1000-8000-00805f9b34fb)
        UUID: A/V Remote Control        (0000110e-0000-1000-8000-00805f9b34fb)
        Modalias: usb:v1D6Bp0246d0532
        Discovering: no

[bluetooth]# scan on
Discovery started
[CHG] Controller 3C:91:80:AA:80:E0 Discovering: yes
[NEW] Device 38:F9:D3:1B:1E:E1 38-F9-D3-1B-1E-E1
[NEW] Device 67:25:04:4E:E3:83 67-25-04-4E-E3-83
[CHG] Device 38:F9:D3:1B:1E:E1 RSSI: -40
[NEW] Device 7E:01:A3:AE:F0:76 7E-01-A3-AE-F0-76
[CHG] Device 67:25:04:4E:E3:83 RSSI: -72
[CHG] Device 7E:01:A3:AE:F0:76 RSSI: -66
[CHG] Device 3F:59:C8:72:74:D7 RSSI: -66
[CHG] Device 3F:59:C8:72:74:D7 UUIDs: 0000181a-0000-1000-8000-00805f9b34fb [CHG] Device 3F:59:C8:72:74:D7 ServiceData Key:
0000fe95-0000-1000-8000-00805f9b34fb
[CHG] Device 3F:59:C8:72:74:D7 ServiceData Value:
70 20 5b 04 a5 d7 74 72 c8 59 3f 09 06 10 02 6c p [...tr.Y?....l
02 .
[NEW] Device 43:31:ED:A4:B4:49 43-31-ED-A4-B4-49
[NEW] Device 4A:BF:0E:E8:89:4F 4A-BF-0E-E8-89-4F
[NEW] Device 76:08:71:6E:38:D5 76-08-71-6E-38-D5
[CHG] Device 67:25:04:4E:E3:83 RSSI: -64
...
[bluetooth]# devices
Device 3F:59:C8:72:74:D7 LYWSD02
Device 38:F9:D3:1B:1E:E1 38-F9-D3-1B-1E-E1
Device 67:25:04:4E:E3:83 67-25-04-4E-E3-83
Device 7E:01:A3:AE:F0:76 7E-01-A3-AE-F0-76
Device 43:31:ED:A4:B4:49 43-31-ED-A4-B4-49
Device 4A:BF:0E:E8:89:4F 4A-BF-0E-E8-89-4F
Device 76:08:71:6E:38:D5 76-08-71-6E-38-D5
Device 7E:AE:93:95:B3:72 7E-AE-93-95-B3-72

Here is the RTL8822CE information:

sudo lspci -nnvs 02:00.0
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. Device [10ec:c822]
Subsystem: Lite-On Communications Inc Device [11ad:0810]
Flags: bus master, fast devsel, latency 0, IRQ 17
I/O ports at 3000 [size=256]
Memory at b1100000 (64-bit, non-prefetchable) [size=64K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [148] Device Serial Number 00-e0-4c-ff-fe-c8-22-01
Capabilities: [158] Latency Tolerance Reporting
Capabilities: [160] L1 PM Substates
Kernel driver in use: rtw_pci
Kernel modules: rtwpci

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#3 lore raw

[Bug 204707] RTL8822CE cannot discover pair-able devices

In reply to [email protected]

https://bugzilla.kernel.org/show_bug.cgi?id=204707

[email protected] changed:

What |Removed |Added
----------------------------------------------------------------------------

             Status|NEW                         |RESOLVED
         Resolution|---                         |CODE_FIX

--- Comment #3 from [email protected] ---
I have sent the patch and it is merged.
https://lkml.org/lkml/2019/9/3/258

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