[Bug 201921] New: Bluetooth: hci0: RTL: rtl: unknown IC info, lmp subver a99e, hci rev 826c, hci ver 0008

[Bug 201921] New: Bluetooth: hci0: RTL: rtl: unknown IC info, lmp subver a99e, hci rev 826c, hci ver 0008

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=201921

            Bug ID: 201921
           Summary: Bluetooth: hci0: RTL: rtl: unknown IC info, lmp subver
                    a99e, hci rev 826c, hci ver 0008
           Product: Drivers
           Version: 2.5
    Kernel Version: Ubuntu 4.19.0-8.9-generic 4.19.6
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Bluetooth
          Assignee: linux-bluetooth@vger.kernel.org
          Reporter: caravena@gmail.com
        Regression: No

Hello,

Open bug in launchpad.net
https://bugs.launchpad.net/bugs/1807375

dmesg:
Bluetooth: hci0: RTL: rtl: unknown IC info, lmp subver a99e, hci rev 826c, hci
ver 0008

Best regards,
--
Cristian Aravena Romero (caravena)

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[Bug 201921] Bluetooth: hci0: RTL: rtl: unknown IC info, lmp subver a99e, hci rev 826c, hci ver 0008

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https://bugzilla.kernel.org/show_bug.cgi?id=201921

--- Comment #1 from Cristian Aravena Romero (caravena@gmail.com) ---
Created attachment 280099
  --> https://bugzilla.kernel.org/attachment.cgi?id=280099&action=edit
dmesg 4.20.0-042000rc7-generic

I really do not know if the problem was definitively solved. Because Bluetooth
devices now appear in GNOME.

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[Bug 201921] Bluetooth: hci0: RTL: rtl: unknown IC info, lmp subver a99e, hci rev 826c, hci ver 0008

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https://bugzilla.kernel.org/show_bug.cgi?id=201921

vasthusya@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |vasthusya@gmail.com

--- Comment #2 from vasthusya@gmail.com ---
(In reply to Cristian Aravena Romero from comment #1)
> Created attachment 280099 [details]
> dmesg 4.20.0-042000rc7-generic
> 
> I really do not know if the problem was definitively solved. Because
> Bluetooth devices now appear in GNOME.

It is still affecting me on vanilla 4.20 and 4.19.12.

I was able to modify drivers/bluetooth/btrtl.c to use rtl_bt/rtl8821c_fw.bin
firmware for this device.

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[Bug 201921] Bluetooth: hci0: RTL: rtl: unknown IC info, lmp subver a99e, hci rev 826c, hci ver 0008

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https://bugzilla.kernel.org/show_bug.cgi?id=201921

--- Comment #3 from vasthusya@gmail.com ---
Created attachment 280449
  --> https://bugzilla.kernel.org/attachment.cgi?id=280449&action=edit
Add IC_INFO(a99e, 826c) to load rtl8821c firmware

With this patch, it has been working fine for a week using Bluetooth mouse.

Other things tested:

 - File transfer
 - A2DP Source

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[Bug 201921] Bluetooth: hci0: RTL: rtl: unknown IC info, lmp subver a99e, hci rev 826c, hci ver 0008

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https://bugzilla.kernel.org/show_bug.cgi?id=201921

Kai-Heng Feng (kai.heng.feng@canonical.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |kai.heng.feng@canonical.com

--- Comment #4 from Kai-Heng Feng (kai.heng.feng@canonical.com) ---
vasthusya,

I also see this issue, but this only happens to reboot.

Do you see this on cold boot?

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[Bug 201921] Bluetooth: hci0: RTL: rtl: unknown IC info, lmp subver a99e, hci rev 826c, hci ver 0008

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https://bugzilla.kernel.org/show_bug.cgi?id=201921

--- Comment #5 from vasthusya@gmail.com ---
Created attachment 280459
  --> https://bugzilla.kernel.org/attachment.cgi?id=280459&action=edit
Kernel messages from various boot states.

Yes, the coldboot lmp_subver=8221 & hci_rev=c are correct and Bluetooth works
on vanilla kernel.

Unfortunately, I must restart the computer in order to gain CPU clock boost on
my Ryzen 5 2500u.
Separate issue, haven't checked around here for that bug yet.
https://community.amd.com/thread/229980#2893988

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[Bug 201921] Bluetooth: hci0: RTL: rtl: unknown IC info, lmp subver a99e, hci rev 826c, hci ver 0008

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https://bugzilla.kernel.org/show_bug.cgi?id=201921

--- Comment #6 from Kai-Heng Feng (kai.heng.feng@canonical.com) ---
Created attachment 280713
  --> https://bugzilla.kernel.org/attachment.cgi?id=280713&action=edit
0001-Bluetooth-btrtl-Let-rtl_load_file-always-return-erro.patch

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[Bug 201921] Bluetooth: hci0: RTL: rtl: unknown IC info, lmp subver a99e, hci rev 826c, hci ver 0008

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https://bugzilla.kernel.org/show_bug.cgi?id=201921

--- Comment #7 from Kai-Heng Feng (kai.heng.feng@canonical.com) ---
Created attachment 280715
  --> https://bugzilla.kernel.org/attachment.cgi?id=280715&action=edit
0002-Bluetooth-btrtl-Let-btrtl_initialize-always-return-e.patch

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[Bug 201921] Bluetooth: hci0: RTL: rtl: unknown IC info, lmp subver a99e, hci rev 826c, hci ver 0008

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https://bugzilla.kernel.org/show_bug.cgi?id=201921

--- Comment #8 from Kai-Heng Feng (kai.heng.feng@canonical.com) ---
Created attachment 280717
  --> https://bugzilla.kernel.org/attachment.cgi?id=280717&action=edit
0003-Bluetooth-btrtl-Skip-initialization-if-firmware-is-a.patch

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[Bug 201921] Bluetooth: hci0: RTL: rtl: unknown IC info, lmp subver a99e, hci rev 826c, hci ver 0008

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https://bugzilla.kernel.org/show_bug.cgi?id=201921

--- Comment #9 from Kai-Heng Feng (kai.heng.feng@canonical.com) ---
Please try these patches. It should the issue.

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[Bug 201921] Bluetooth: hci0: RTL: rtl: unknown IC info, lmp subver a99e, hci rev 826c, hci ver 0008

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https://bugzilla.kernel.org/show_bug.cgi?id=201921

--- Comment #10 from vasthusya@gmail.com ---
Created attachment 280781
  --> https://bugzilla.kernel.org/attachment.cgi?id=280781&action=edit
0004-Bluetooth-btrtl-Expose-btrtl_device_info.patch

Hi Kai,

Your patch #2 had two issues:
 - btrtl_device_info definition is unavailable in hci_h5.c as it's not in
header
 - a couple of argument type mismatch

It would have compiled fine when you don't have CONFIG_BT_HCIUART_RTL=y

I have made it compilable and running it now with working Bluetooth.

Thanks

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[Bug 201921] Bluetooth: hci0: RTL: rtl: unknown IC info, lmp subver a99e, hci rev 826c, hci ver 0008

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https://bugzilla.kernel.org/show_bug.cgi?id=201921

--- Comment #11 from Kai-Heng Feng (kai.heng.feng@canonical.com) ---
Turns out it's a regression, I sent V2 patch to address the issue.

https://lkml.org/lkml/2019/1/27/16

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[Bug 201921] Bluetooth: hci0: RTL: rtl: unknown IC info, lmp subver a99e, hci rev 826c, hci ver 0008

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https://bugzilla.kernel.org/show_bug.cgi?id=201921

--- Comment #12 from vasthusya@gmail.com ---
The patch has been working for me since kernel 5.1.

Thank you.

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