Very slow wireless Internet download speed

[Nathan Teodosio]

I have very slow wireless download speed (normally 10 to 200 kb/s) in Ubuntu 24.04, 6.6.0-14-generic — nothing specific to this version, just mentioning it for completeness.

Occasionally it will be faster for some minutes, around 5 Mb/s, good but for a matter of fact not as fast as what I get in Windows, but usually I'm stuck with those slow values.

The weird thing is that upload speed is always fine, between 2 and 8 Mb/s:

% speedtest
Retrieving speedtest.net configuration...
Testing from Deutsche Telekom AG (217.240.168.229)...
Retrieving speedtest.net server list...
Selecting best server based on ping...
Hosted by Netcom BW (Biberach an der Riß) [118.69 km]: 60.93 ms
Testing download speed................................................................................
Download: 0.18 Mbit/s
Testing upload speed......................................................................................................
Upload: 3.12 Mbit/s

The same issue exists with Iwd or Debian. In Windows, however, I get consistently 20 Mb/s download speed, so this is not a hardware issue. Also to work around that I tether my mobile phone to the computer via USB, which also works well.

03:00.0 Network controller: Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter (rev 31)
        Subsystem: Lite-On Communications Inc Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter
        Flags: bus master, fast devsel, latency 0, IRQ 132
        Memory at a4000000 (64-bit, non-prefetchable) [size=2M]
        Capabilities: <access denied>
        Kernel driver in use: ath10k_pci
        Kernel modules: ath10k_pci

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.6.0-14-generic 6.6.0-14.14
ProcVersionSignature: Ubuntu 6.6.0-14.14-generic 6.6.3
Uname: Linux 6.6.0-14-generic x86_64
ApportVersion: 2.27.0-0ubuntu6
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/seq: nteodosio 2424 F.... pipewire
 /dev/snd/controlC0: nteodosio 2428 F.... wireplumber
CRDA: N/A
Date: Mon Feb 12 12:04:44 2024
InstallationDate: Installed on 2022-05-16 (637 days ago)
InstallationMedia: Xubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419)
Lsusb:
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 001 Device 002: ID 046d:c534 Logitech, Inc. Unifying Receiver
 Bus 001 Device 003: ID 0408:a061 Quanta Computer, Inc. HD User Facing
 Bus 001 Device 004: ID 04ca:3015 Lite-On Technology Corp. Qualcomm Atheros QCA9377 Bluetooth
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
MachineType: Acer Aspire A515-52G
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.6.0-14-generic root=/dev/mapper/vgxubuntu-root ro
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-6.6.0-14-generic N/A
 linux-backports-modules-6.6.0-14-generic N/A
 linux-firmware 20240202.git36777504-0ubuntu1
SourcePackage: linux
UpgradeStatus: Upgraded to noble on 2023-01-17 (391 days ago)
dmi.bios.date: 01/07/2019
dmi.bios.release: 1.9
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: V1.09
dmi.board.asset.tag: Type2 - Board Serial Number
dmi.board.name: Raticate_WL
dmi.board.vendor: WL
dmi.board.version: V1.09
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.09
dmi.ec.firmware.release: 1.7
dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.09:bd01/07/2019:br1.9:efr1.7:svnAcer:pnAspireA515-52G:pvrV1.09:rvnWL:rnRaticate_WL:rvrV1.09:cvnAcer:ct10:cvrV1.09:sku0000000000000000:
dmi.product.family: Aspire 5
dmi.product.name: Aspire A515-52G
dmi.product.sku: 0000000000000000
dmi.product.version: V1.09
dmi.sys.vendor: Acer