Bug 212187

Same same. I'm using 5.11.0-21.2-liquorix-amd64 from https://liquorix.net/ which used to work until the last versions (1 or 2 weeks ago). Wifi & BT are gone now.

Anything I could provide to help ?

[mar. mai 18 09:03:00 2021] ath11k_pci 0000:6d:00.0: WARNING: ath11k PCI support is experimental!
[mar. mai 18 09:03:00 2021] ath11k_pci 0000:6d:00.0: BAR 0: assigned [mem 0xb4200000-0xb42fffff 64bit]
[mar. mai 18 09:03:00 2021] ath11k_pci 0000:6d:00.0: enabling device (0000 -> 0002)

root@dev5:~# sha256sum /lib/firmware/ath11k/QCA6390/hw2.0/*
a7ccba4e5543af288b228527e75048fb3045fbb74d1a1f3c72284abc4fd57347  /lib/firmware/ath11k/QCA6390/hw2.0/amss.bin
b67f3fe18c6fd3798c45740061bfadc19fb8d5dde11db6e80ed0a7d92525948f  /lib/firmware/ath11k/QCA6390/hw2.0/board-2.bin
596482f780d21645f72a48acd9aed6c6fc8cf2d039ac31552a19800674d253cc  /lib/firmware/ath11k/QCA6390/hw2.0/m3.bin

6d:00.0 Network controller: Qualcomm QCA6390 Wireless Network Adapter [AX500-DBS (2x2)] (rev 01)
	Subsystem: Rivet Networks Device a501
	Flags: bus master, fast devsel, latency 0, IRQ 181
	Memory at b4200000 (64-bit, non-prefetchable) [size=1M]
	Capabilities: [40] Power Management version 3
	Capabilities: [50] MSI: Enable+ Count=32/32 Maskable+ 64bit-
	Capabilities: [70] Express Endpoint, MSI 00
	Capabilities: [100] Advanced Error Reporting
	Capabilities: [148] Secondary PCI Express
	Capabilities: [158] Transaction Processing Hints
	Capabilities: [1e4] Latency Tolerance Reporting
	Capabilities: [1ec] L1 PM Substates
	Kernel driver in use: ath11k_pci
	Kernel modules: ath11k_pci

Apparently reverting 29b9829718c5e9bd68fc1c652f5e0ba9b9a64fed (cf https://bugs.archlinux.org/task/70849?project=1&string=linux) fixes the problem.

(It does for me)

Using 5.12.5 does not seem to fix the issue for me.

Some events from my dmesg:

[    1.869716] ath11k_pci 0000:6d:00.0: BAR 0: assigned [mem 0xb4200000-0xb42fffff 64bit]
[    1.869737] ath11k_pci 0000:6d:00.0: enabling device (0000 -> 0002)
[    1.891300] Bluetooth: hci0: setting up ROME/QCA6390
[    1.940431] mhi mhi0: Requested to power ON
[    1.940562] mhi mhi0: Power on setup success
[    2.217589] Bluetooth: hci0: unexpected event for opcode 0x0105
[   12.403838] Bluetooth: hci0: Reading QCA version information failed (-110)
[   12.403842] Bluetooth: hci0: Retry BT power ON:0
[   12.724109] Bluetooth: hci0: unexpected event for opcode 0x0119
[   22.857476] Bluetooth: hci0: Reading QCA version information failed (-110)
[   22.857491] Bluetooth: hci0: Retry BT power ON:1
[   23.177899] Bluetooth: hci0: unexpected event for opcode 0x0119
[   33.310781] Bluetooth: hci0: Reading QCA version information failed (-110)
[   33.310793] Bluetooth: hci0: Retry BT power ON:2
[   33.631232] Bluetooth: hci0: unexpected event for opcode 0x0119
[   43.764099] Bluetooth: hci0: Reading QCA version information failed (-110)

Possibly relevant lspci -vnn output:

6d:00.0 Network controller [0280]: Qualcomm Device [17cb:1101] (rev 01)
	Subsystem: Rivet Networks Device [1a56:a501]
	Flags: fast devsel
	Memory at b4200000 (64-bit, non-prefetchable) [disabled] [size=1M]
	Capabilities: [40] Power Management version 3
	Capabilities: [50] MSI: Enable- Count=1/32 Maskable+ 64bit-
	Capabilities: [70] Express Endpoint, MSI 00
	Capabilities: [100] Advanced Error Reporting
	Capabilities: [148] Secondary PCI Express
	Capabilities: [158] Transaction Processing Hints
	Capabilities: [1e4] Latency Tolerance Reporting
	Capabilities: [1ec] L1 PM Substates
	Kernel modules: ath11k_pci

Oh my bad !
Wifi works well but Bluetooth still doesn't work.

(In reply to Xavier Bestel from comment #2)
> Apparently reverting 29b9829718c5e9bd68fc1c652f5e0ba9b9a64fed (cf
> https://bugs.archlinux.org/task/70849?project=1&string=linux) fixes the
> problem.

Are you sure this is the same problem as the original reporter? This bug report is about ath11k not working on XPS 9500 since v5.11.2.

I suspect your comment applies to bug #213055 instead, which is about a regression in v5.12.3 stable release.

Hi, I am the author of: bus: mhi: core: Process execution environment changes serially [ Upstream commit ef2126c4e2ea2b92f543fae00a2a0332e4573c48

We do not see progress as https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/bus/mhi/core?h=v5.13-rc2&id=4884362f6977fc05cbec736625665241c0e0732f is missing in the older kernels.

It's meant to be a dependency but was not picked.

I can confirm that the current build of 5.13.0-rc2 have the driver working on the Dell XPS 9500 (using self compiled kernel in Arch).

I tested the answers in https://bugzilla.kernel.org/show_bug.cgi?id=213055 but none of the kernels mentioned seems to work for me.

St least it´s fixed for the next release then.

I have a strange behavior, with my XPS 9500 with a QCA6390:
- after installing 5.14 from Debian, the wifi card "died", i.e. it's as if it's not plugged anymore, can't see it from Linux, from Windows nor from the BIOS
- I called Dell and made them change the motherboard + wifi card; we checked it all worked with Windows, the Dell repairman went away
- as soon as I rebooted under Linux the wifi card was gone again, and no amount of reset/poweroff/whatever made it reappear (also absent from Windows and BIOS)

(In reply to Xavier Bestel from comment #10)
> - as soon as I rebooted under Linux the wifi card was gone again, and no
> amount of reset/poweroff/whatever made it reappear (also absent from Windows
> and BIOS)

I had the same problem, minus the back and forth with Dell. What fixed it is :
- deactivate wifi + bluetooth in bios
- boot normally
- reboot
- reactivate wifi + bluetooth in bios

I was not sure so I tried exactly that, but I still don't have my WiFi back :/
Just to be sure, there's no WiFI/WLAN in "integrated devices", I found it under some kind of "connections" topic, and there I disabled WLAN and Bluetooth. Was it the right options ?

My bad, it works if I do an actual poweroff between BIOS settings. Thanks a lot !
Anyway that's a problem with the driver/hardware, because the OS is unable to get back to the WiFi card once it's in this soft-bricked state ...

For the problem in Dell XPS 15 9500 laptops I'm hopeful this firmware fixes it:

https://github.com/kvalo/ath11k-firmware/tree/master/QCA6390/hw2.0/1.0.1/WLAN.HST.1.0.1-05266-QCAHSTSWPLZ_V2_TO_X86-1

How so ? Is there a changelog somewhere ?

(In reply to Xavier Bestel from comment #15)
> How so ? Is there a changelog somewhere ?

Unfortunately no changelog is available. But one person was intermittenly having problems with ath11k on Dell XPS 15 9500 and reported that WLAN.HST.1.0.1-05266-QCAHSTSWPLZ_V2_TO_X86-1 fixed the issues.

No response from Luca so I assume the issue is fixed and closing the issue.