Add new iwlwifi firmware to solve AX201 hang

Bug #1900883 reported by Kai-Heng Feng
This bug affects 3 people
Affects Status Importance Assigned to Milestone
HWE Next
linux-firmware (Ubuntu)

Bug Description

Intel AX201 firmware crashes or hardware RX ring buffer hangs after S3.

Use new firmware from linux-firmware.git can solve the issue.

WiFi works for each cycle of 1000 S3 cycles.

[Regression Potential]
Both Focal 5.4 and OEM 5.6 kernel use this firmware, so it might regress
current 5.4 users. I did a smoke test with this firmware on Focal 5.4,
and I didn't see any regression.

Instead of cherry-pick the commit, only add the firmware needed for
AX201 to minimize the regression risk.

Changed in linux-firmware (Ubuntu):
status: New → Fix Released
Changed in linux-firmware (Ubuntu Focal):
status: New → Confirmed
importance: Undecided → Medium
tags: added: oem-priority originate-from-1896568 stella
Revision history for this message
Rex Tsai (chihchun) wrote :

The change is proposed on - [PATCH 0/1] Add new iwlwifi firmware to solve AX201 hang -

Revision history for this message
Timo Aaltonen (tjaalton) wrote : Please test proposed package

Hello Kai-Heng, or anyone else affected,

Accepted linux-firmware into focal-proposed. The package will build now and be available at in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See 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 . 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.

Changed in linux-firmware (Ubuntu Focal):
status: Confirmed → Fix Committed
Revision history for this message
Kai-Heng Feng (kaihengfeng) wrote :

With the new firmware, wifi continues to work in all 100 s3 cycles.

tags: added: verification-done-focal
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package linux-firmware - 1.187.4

linux-firmware (1.187.4) focal; urgency=medium

  * Add new iwlwifi firmware to fix AX201 hang (LP: #1900883)
    - UBUNTU: SAUCE: Add iwlwifi-QuZ-a0-hr-b0-50.ucode

  * Fix broken Realtek 8821C BT after S3 (LP: #1901129)
    - rtl_bt: Update RTL8821C BT FW to 0xAA6C_A99E

 -- Seth Forshee <email address hidden> Wed, 28 Oct 2020 16:05:46 -0500

Changed in linux-firmware (Ubuntu Focal):
status: Fix Committed → Fix Released
Revision history for this message
Łukasz Zemczak (sil2100) wrote : Update Released

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.

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