Qualcomm Atheros QCA61x4 cannot connect to encrypted 5Ghz networks

[Roman]

The device works fine with Ubuntu 15.10 mainline kernel 4.2.0 and the firmware provided in linux-firmware on 2,4 Ghz wifi networks or unencrypted 5GHz networks.

But when i connect to a encrypted 5Ghz network. The firmware provide in linux-firmware (WLAN.RM.1.1-00141) crashed like i think is described here:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1516384

So i installed the latest firmware release SW_RM.1.1.1-00157-QCARMSWPZ-1 from ath10k-firmware (https://github.com/kvalo/ath10k-firmware/)

In this version the firmware doesn't crash but goes into a loop. Like you see in dmesg, the device associates with the AP, but from an unknown reason it cannot connect.

At the moment i cannot provide you any details about the AP im testing with, because im using my universities network, but if you really need them i can test the device with an known AP in a week or so.

I reported the bug to the ath10k mailing list, but i think the topic got lost:
http://lists.infradead.org/pipermail/ath10k/2015-November/006478.html

PS: I tested the problem with all mainline and upstream kernels(4.2.6, 4.3.0,4.4rc4) without any difference.

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ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: linux-image-4.2.0-21-generic 4.2.0-21.25
ProcVersionSignature: Ubuntu 4.2.0-21.25-generic 4.2.6
Uname: Linux 4.2.0-21-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: roman 2043 F.... pulseaudio
 /dev/snd/controlC1: roman 2043 F.... pulseaudio
CurrentDesktop: Unity
Date: Fri Dec 11 14:01:58 2015
HibernationDevice: RESUME=UUID=38f2bb72-0ff3-498e-ab17-249df8b33aef
InstallationDate: Installed on 2015-10-23 (49 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: Acer Aspire VN7-571G
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-21-generic.efi.signed root=UUID=da03328e-3129-4dfc-98d7-b8b06fa3d5f1 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.2.0-21-generic N/A
 linux-backports-modules-4.2.0-21-generic N/A
 linux-firmware 1.149.3
SourcePackage: linux
UdevLog: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/08/2015
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: V1.14
dmi.board.asset.tag: No Asset Tag
dmi.board.name: Aspire VN7-571G
dmi.board.vendor: Acer
dmi.board.version: V1.14
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.14
dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.14:bd01/08/2015:svnAcer:pnAspireVN7-571G:pvrV1.14:rvnAcer:rnAspireVN7-571G:rvrV1.14:cvnAcer:ct10:cvrV1.14:
dmi.product.name: Aspire VN7-571G
dmi.product.version: V1.14
dmi.sys.vendor: Acer

[Brad Figg (brad-figg)]

This change was made by a bot.

[Roman (romanbn)]

The QCA6174/hw3.0 belongs to a newer revision of the QCA6174 device ([168c:003e] (rev 32)).

My device has (rev 20) which firmware is located under QCA6174/hw2.1.

I tested it still with these results (dmesg | grep ath10k):

[ 5.619699] ath10k_pci 0000:03:00.0: pci irq msi-x interrupts 8 irq_mode 0 reset_mode 0
[ 5.960659] ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/cal-pci-0000:03:00.0.bin failed with error -2
[ 5.991313] ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/QCA6174/hw2.1/board-pci-168c:003e:11ad:0804.bin failed with error -2
[ 5.991317] ath10k_pci 0000:03:00.0: failed to load spec board file, falling back to generic: -2
[ 6.092925] ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/QCA6174/hw2.1/firmware-5.bin failed with error -2
[ 6.092930] ath10k_pci 0000:03:00.0: could not fetch firmware file 'ath10k/QCA6174/hw2.1/firmware-5.bin': -2
[ 8.231310] ath10k_pci 0000:03:00.0: unable to write to the device
[ 8.231316] ath10k_pci 0000:03:00.0: failed to download normal firmware: -110
[ 8.231319] ath10k_pci 0000:03:00.0: could not init core (-110)
[ 8.231371] ath10k_pci 0000:03:00.0: could not probe fw (-110)

Like excepted the device doesn't even boot.

[penalvch (penalvch)]

Roman, thanks for testing. The next thing that would be helpful is the WAP manufacturer, model, and firmware version. It is understood that this is primarily reproducible with a university WAP. However, given the circumstances, it would be proper if you asked them for this information, and for them to provide it to you so you may get your device working on campus.

Hence, could you please advise to this?

[Roman (romanbn)]

I repeated my tests with a known AP with success!

It was an Asus RT-AC56U
Firmware Version: 3.0.0.4.378_4585
This site will propably contain all the information about the AP:
https://wikidevi.com/wiki/ASUS_RT-AC56U

The network i associated with is secured by WPA2.

[penalvch (penalvch)]

Roman, your comment isn't terribly clear. Could you please advise what was a success precisely?

[Roman (romanbn)]

Im sorry,

with "success" i meant that it was possible to enable a stable, WPA2-secured connection with a 5Ghz network.

[penalvch (penalvch)]

Roman, to clarify https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1525228/comments/5 , what is requested is the information for a router where this doesn't work.

[Launchpad Janitor (janitor)]

[Expired for linux-firmware (Ubuntu) because there has been no activity for 60 days.]