Fix broken Realtek 8821C BT after S3
Bug #1901129 reported by
Kai-Heng Feng
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
HWE Next |
Fix Released
|
Undecided
|
Unassigned | ||
linux-firmware (Ubuntu) |
Fix Released
|
Medium
|
Unassigned | ||
Focal |
Fix Released
|
Medium
|
Unassigned | ||
Groovy |
Fix Released
|
Medium
|
Unassigned |
Bug Description
[Impact]
Realtek 8821C Bluetooth controller may stop working after S3.
[Fix]
Use the new firmware from Realtek (Release Version: 0xAA6C_A99E)
Link: https://<email address hidden>/
[Test]
With the new firmware, the BT controller works and can pass 1000 cycles
of S3.
[Regression Potential]
This is tested with some BT devices, no regressions found so far.
However, regression could still happen because there are many Bluetooth peripherals we can't test.
We'll escalate the issue to Realtek if regression ever happens.
Changed in linux-firmware (Ubuntu Focal): | |
status: | New → Confirmed |
Changed in linux-firmware (Ubuntu Groovy): | |
status: | New → Confirmed |
Changed in linux-firmware (Ubuntu Focal): | |
importance: | Undecided → Medium |
Changed in linux-firmware (Ubuntu Groovy): | |
importance: | Undecided → Medium |
Changed in linux-firmware (Ubuntu Focal): | |
assignee: | nobody → Kai-Heng Feng (kaihengfeng) |
assignee: | Kai-Heng Feng (kaihengfeng) → nobody |
tags: | added: oem-priority originate-from-1893308 stella |
description: | updated |
description: | updated |
Changed in linux-firmware (Ubuntu): | |
status: | Confirmed → Fix Released |
Changed in hwe-next: | |
status: | New → Fix Released |
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Realtek's firmware was approved by upstream at https:/ /git.kernel. org/pub/ scm/linux/ kernel/ git/firmware/ linux-firmware. git/commit/ ?id=09e8cfffdec c1f373a82e9456c 6cd8810a831288