Fix Realtek 8821c bluetooth fails reconnect BLE devices after suspend

[Kai-Heng Feng]

[Impact]
Connected BLE devices like keyboard and mouse won't automatically
reconnect to host after system suspend.

[Fix]
New firmware from Realtek.

[Test]
With the new firmware used, BLE keyboard and mouse will reconnect to
host by pressing any key or by moving it.

[Where problems could occur]
Tried some other Bluetooth peripherals and didn't see any regression.
This is also internally tested by Realtek.

[Chih-Hsyuan Ho (chih)]

According to Realtek, the firmware had been accepted by upstream at:

https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/?id=ef3813dc71ced316bed07a61879ff488179c7fee

[Timo Aaltonen (tjaalton)]

Hello Kai-Heng, or anyone else affected,

Accepted linux-firmware into groovy-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/linux-firmware/1.190.3 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-groovy to verification-done-groovy. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-groovy. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Timo Aaltonen (tjaalton)]

Hello Kai-Heng, or anyone else affected,

Accepted linux-firmware into focal-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/linux-firmware/1.187.8 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-focal to verification-done-focal. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-focal. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Seth Forshee (sforshee)]

@Kai-Heng please add some information about how you verified this.

[Kai-Heng Feng (kaihengfeng)]

Steps to verify:
1) Pair and connect BLE keyboard and BLE mouse.
2) Suspend and resume the host system.
3) Move BLE mouse and press BLE keyboard, they reconnect to host automatically.

Without the new firmware, 3) will fail.

[Timo Aaltonen (tjaalton)]

The verification of the Stable Release Update for linux-firmware has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-firmware - 1.187.8

---------------
linux-firmware (1.187.8) focal; urgency=medium

  * Failed to load DMC firmware i915/tgl_dmc_ver2_08.bin (LP: #1908366)
    - i915: Add DMC firmware 2.08 for TGL

  * Fix Realtek 8821c bluetooth fails reconnect BLE devices after suspend
    (LP: #1909705)
    - rtl_bt: Update RTL8821C BT(USB I/F) FW to 0x829a_7644

 -- Seth Forshee <email address hidden> Thu, 07 Jan 2021 09:52:55 -0600

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-firmware - 1.190.3

---------------
linux-firmware (1.190.3) groovy; urgency=medium

  * Fix Realtek 8821c bluetooth fails reconnect BLE devices after suspend
    (LP: #1909705)
    - rtl_bt: Update RTL8821C BT(USB I/F) FW to 0x829a_7644

 -- Seth Forshee <email address hidden> Thu, 07 Jan 2021 09:40:21 -0600