QCA9377 WIFI does not work full speed - runs at lowest bitrate 1Mp/s (1Mb/s)

[Qusai Abu Hilal]

I'm using Ubuntu 18.04, development branch, and I have
QCA9377 802.11ac Wireless Network Adapter

When I connect it to WiFi hotspot in 2.4G mode I will get only 1MBps, and
When I connect it to WiFi hotspot in 5G mode I will get only 6MBps.

I think an updated firmware is needed.

Running:
Ubuntu 4.15.0-13.14-generic 4.15.10
---
ApportVersion: 2.20.9-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: rwd 1422 F.... pulseaudio
 /dev/snd/controlC0: rwd 1422 F.... pulseaudio
CurrentDesktop: KDE
DistroRelease: Ubuntu 18.04
InstallationDate: Installed on 2018-03-11 (23 days ago)
InstallationMedia: Kubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180306.1)
MachineType: Dell Inc. XPS 8930
NonfreeKernelModules: nvidia_modeset nvidia
Package: linux (not installed)
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-13-generic.efi.signed root=UUID=6a5b9e49-0017-4dc7-a2de-43c63fe0a8bb ro quiet splash vt.handoff=1
ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10
RelatedPackageVersions:
 linux-restricted-modules-4.15.0-13-generic N/A
 linux-backports-modules-4.15.0-13-generic N/A
 linux-firmware 1.173
Tags: bionic
Uname: Linux 4.15.0-13-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 12/12/2017
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.0.5
dmi.board.name: 0DF42J
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 3
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias: dmi:bvnDellInc.:bvr1.0.5:bd12/12/2017:svnDellInc.:pnXPS8930:pvr1.0.5:rvnDellInc.:rn0DF42J:rvrA00:cvnDellInc.:ct3:cvrNotSpecified:
dmi.product.family: XPS
dmi.product.name: XPS 8930
dmi.product.version: 1.0.5
dmi.sys.vendor: Dell Inc.
---
ApportVersion: 2.20.9-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: rwd 1422 F.... pulseaudio
 /dev/snd/controlC0: rwd 1422 F.... pulseaudio
CurrentDesktop: KDE
DistroRelease: Ubuntu 18.04
InstallationDate: Installed on 2018-03-11 (23 days ago)
InstallationMedia: Kubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180306.1)
MachineType: Dell Inc. XPS 8930
NonfreeKernelModules: nvidia_modeset nvidia
Package: linux (not installed)
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-13-generic.efi.signed root=UUID=6a5b9e49-0017-4dc7-a2de-43c63fe0a8bb ro quiet splash vt.handoff=1
ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10
RelatedPackageVersions:
 linux-restricted-modules-4.15.0-13-generic N/A
 linux-backports-modules-4.15.0-13-generic N/A
 linux-firmware 1.173
Tags: bionic
Uname: Linux 4.15.0-13-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 12/12/2017
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.0.5
dmi.board.name: 0DF42J
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 3
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias: dmi:bvnDellInc.:bvr1.0.5:bd12/12/2017:svnDellInc.:pnXPS8930:pvr1.0.5:rvnDellInc.:rn0DF42J:rvrA00:cvnDellInc.:ct3:cvrNotSpecified:
dmi.product.family: XPS
dmi.product.name: XPS 8930
dmi.product.version: 1.0.5
dmi.sys.vendor: Dell Inc.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1760539

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Joseph Salisbury (jsalisbury)]

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.16 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16

[Qusai Abu Hilal (qusaiabuhilal)]

1. I installed Kubuntu 18.04 beta-1, after it was released, and from first day, I always have been getting:
Bit Rate=1 Mb/s on 2.4G, and
Bit Rate=6 Mb/s on 5G.

2. I did test latest upstram kernel (v4.16), but my computer did NOT show up login screen (sddm), but from command line I were getting same bitrate (1 Mb/s):
iwconfig
enp4s0 no wireless extensions.

lo no wireless extensions.

wlp3s0 IEEE 802.11 ESSID:"Aaadamun: 7+60"
          Mode:Managed Frequency:2.462 GHz Access Point: 38:A4:ED:4B:A5:C5
          Bit Rate=1 Mb/s Tx-Power=20 dBm
          Retry short limit:7 RTS thr:off Fragment thr:off
          Power Management:on
          Link Quality=61/70 Signal level=-49 dBm
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:0 Invalid misc:107 Missed beacon:0

3. My copmputer is very new: DELL XPS-8930, so maybe the company have not released driver fot it.

Extra info:
sudo lshw -C network
  *-network
       description: Wireless interface
       product: QCA9377 802.11ac Wireless Network Adapter
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wlp3s0
       version: 31
       serial: d4:6a:6a:e7:82:b3
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=ath10k_pci driverversion=4.15.0-13-generic firmware=WLAN.TF.1.0-00002-QCATFSWPZ-5 ip=192.168.43.137 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:136 memory:ec200000-ec3fffff
--------------------------------------------------------------------------------------------------
iwlist wlp3s0 scanning
wlp3s0 Scan completed :
          Cell 01 - Address: 38:A4:ED:4B:A5:C5
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=61/70 Signal level=-49 dBm
                    Encryption key:on
                    ESSID:"Aaadamun: 7+60"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
                              36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=00000002e8f5aa6f
                    Extra: Last beacon: 853396ms ago
                    IE: Unknown: 000E41616164616D756E3A20372B3630
                    IE: Unknown: 010482848B96
                    IE: Unknown: 03010B
                    IE: Unknown: 2A0100
                    IE: Unknown: 32080C1218243048606C
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 2D1A2C0103FF00000000000000000000000000000000000000000000
                    IE: Unknown: 3D160B080000000200000000000000000000000000000000
                    IE: Unknown: DD180050F2020101810003A4000027A4000042435E0062322F00

** Side note **
Despite slow bitrate I were able to get speed up to (954 kB/s) ( I saw ...

[Qusai Abu Hilal (qusaiabuhilal)]

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[Kai-Heng Feng (kaihengfeng)]

IIRC, this is a limitation of the FW of ath10k, it can't correctly report the connection speed.

The "real" connection speed is not affected by this issue though.

[Qusai Abu Hilal (qusaiabuhilal)]

ok.
that's great.

Any idea how when it will be able to report correct bitrate ?

[Yosha872 (yosha)]

Same issue on Ubuntu 22.04.2 (kernel 5.19.0-38-generic).

However, this is NOT the real speed of my WI-FI. This is visible by doing a speedtest with a ISP (I get 57 Mb/s, fiber), or from terminal by typing 'iwlconfig'.

Example on my laptop Acer E5-575G:

wlp3s0 IEEE 802.11 ESSID:"TP-Link_XXXX"
          Mode:Managed Frequency:2.417 GHz Access Point: XX:XX:XX:XX:XX:X
          Bit Rate=1 Mb/s Tx-Power=20 dBm
          Retry short limit:7 RTS thr:off Fragment thr:off
          Power Management:on
          Link Quality=47/70 Signal level=-63 dBm
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:0 Invalid misc:59 Missed beacon:0