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Tasklist

FS#70948 - Linux 5.12.3 regression: Wireless connection on Dell XPS 15 9500

Attached to Project: Arch Linux
Opened by Tom Boshoven (TBoshoven) - Wednesday, 19 May 2021, 14:07 GMT
Last edited by Doug Newgard (Scimmia) - Wednesday, 19 May 2021, 14:14 GMT
Task Type Bug Report
Category Kernel
Status Closed
Assigned To No-one
Architecture x86_64
Severity High
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:
Updating the version of the "linux" package from 5.12.2.arch1-1 to 5.12.3.arch1-1 or 5.12.4.arch1-2 causes the wireless connection on my Dell XPS15 9500 to not come up.
Downgrading back to 5.12.2.arch1-1 solves the issue.

Additional info:
* Packages: linux-5.12.3.arch1-1 and linux-5.12.4.arch1-2
* Hardware: I believe Killer WiFi 6 AX500-DBS (lspci: 6c:00.0 Network controller: Qualcomm Device 1101 (rev 01))
* Logs: I'm not seeing any specifics, but notably the following error consistently appears in 5.12.3+ and never on 5.12.2:

kernel: Bluetooth: hci0: setting up ROME/QCA6390
kernel: Bluetooth: hci0: Frame reassembly failed (-84)

I believe this indicates that Bluetooth is also unhappy.

Ath11k logs:

Broken versions:
kernel: ath11k_pci 0000:6c:00.0: BAR 0: assigned [mem 0xb4200000-0xb42fffff 64bit]
kernel: ath11k_pci 0000:6c:00.0: enabling device (0000 -> 0002)

Working:
kernel: ath11k_pci 0000:6c:00.0: BAR 0: assigned [mem 0xb4200000-0xb42fffff 64bit]
kernel: ath11k_pci 0000:6c:00.0: enabling device (0000 -> 0002)
kernel: ath11k_pci 0000:6c:00.0: chip_id 0x0 chip_family 0xb board_id 0xff soc_id 0xffffffff
kernel: ath11k_pci 0000:6c:00.0: fw_version 0x101c06cc fw_build_timestamp 2020-06-24 19:50 fw_build_id
kernel: ath11k_pci 0000:6c:00.0 wlp108s0: renamed from wlan0

Steps to reproduce:
* Upgrade to one of the two mentioned kernels.
* Reboot.
This task depends upon

Closed by  Doug Newgard (Scimmia)
Wednesday, 19 May 2021, 14:14 GMT
Reason for closing:  Duplicate
Additional comments about closing:   FS#70849 

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