rtw89_8852ce - Lost WIFI connection after suspend

Bug #2065128 reported by AceLan Kao
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
HWE Next
New
Undecided
Unassigned
linux (Ubuntu)
Status tracked in Oracular
Jammy
Invalid
Undecided
Unassigned
Noble
Fix Committed
Undecided
AceLan Kao
Oracular
Fix Released
Undecided
AceLan Kao
linux-oem-6.5 (Ubuntu)
Status tracked in Oracular
Jammy
Fix Committed
Undecided
AceLan Kao
Noble
Invalid
Undecided
Unassigned
Oracular
Invalid
Undecided
Unassigned

Bug Description

[Impact]
Lost WIFI connection after suspend.
While this happen, the WIFI module couldn't detect any AP, re-enable module and reboot OS without any help.
There only way to get it back is cold boot.

[Fix]
Realtek provides a fix which has been included in rtw maintainer's tree
https://<email address hidden>/T/#mbfcb37c2fdc85ba280743f2b07fbf1fa8719eb79

The commits has been included in v6.10-rc1
4e5957101d42 wifi: rtw89: 8852c: refine power sequence to imporve power consumption
535c045da60f wifi: rtw89: reset AFEDIG register in power off sequence

[Test case]
1. Boot into OS
2. open terminal to keep checking dmesg or check the wifi connection from GUI
3. suspend/resume multiple times
4. check the wifi connection

[Where problems could occur]
What the 2 commits should be safe and won't introduce any regression.
1. Reset AFEDIG register before BB reset in power off sequence
2. Adjust power and clock parameters

AceLan Kao (acelankao)
Changed in linux (Ubuntu Jammy):
status: New → Invalid
Changed in linux (Ubuntu Noble):
status: New → In Progress
Changed in linux-oem-6.5 (Ubuntu Jammy):
status: New → In Progress
Changed in linux-oem-6.5 (Ubuntu Noble):
status: New → Invalid
Changed in linux-oem-6.5 (Ubuntu Oracular):
status: New → Invalid
Changed in linux (Ubuntu Oracular):
status: New → In Progress
Changed in linux (Ubuntu Noble):
assignee: nobody → AceLan Kao (acelankao)
Changed in linux (Ubuntu Oracular):
assignee: nobody → AceLan Kao (acelankao)
Changed in linux-oem-6.5 (Ubuntu Jammy):
assignee: nobody → AceLan Kao (acelankao)
tags: added: oem-priority originate-from-2054278 stella
LEE KUAN-YING (kyyc0426)
Changed in linux-oem-6.5 (Ubuntu Jammy):
status: In Progress → Fix Committed
AceLan Kao (acelankao)
description: updated
Changed in linux (Ubuntu Oracular):
status: In Progress → Fix Released
Changed in linux (Ubuntu Noble):
status: In Progress → Fix Committed
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote :

This bug is awaiting verification that the linux-oem-6.5/6.5.0-1025.26 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-oem-6.5' to 'verification-done-jammy-linux-oem-6.5'. If the problem still exists, change the tag 'verification-needed-jammy-linux-oem-6.5' to 'verification-failed-jammy-linux-oem-6.5'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

tags: added: kernel-spammed-jammy-linux-oem-6.5-v2 verification-needed-jammy-linux-oem-6.5
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