[ubuntu] Wifi speed slow downs when i connect my bluetooth earbuds on ubuntu 22.04 (2024)

1. March 28th, 2023 #1

   thehalfburned

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   Wifi speed slow downs when i connect my bluetooth earbuds on ubuntu 22.04

   

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2. March 28th, 2023 #2

   kingpenguin

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   Re: Wifi speed slow downs when i connect my bluetooth earbuds on ubuntu 22.04

   Is it possible to give a little more information on the wifi card and the bluetooth card that you are using? If they are PCIE (in your computer) you should be able to run "lspci" or if it is usb connected you can run "lsusb -vv". Also if the devices are usb make sure to plug them into your motherboard usb connections now the ones on the computer case. The reason I say this is sometimes the usb ports are all connected to the same usb interface on the motherboard and can cause a bottle neck. If you have any other questions please let me know.

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3. March 29th, 2023 #3

   

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   MAFoElffen

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   Re: Wifi speed slow downs when i connect my bluetooth earbuds on ubuntu 22.04

   Most "Laptop" wifi cards (that are also blutooth) are on the USB Bus:
   

   Code:

   mafoelffen@Mikes-ThinkPad-T520:~$ sudo lsusb -v -s 001:003 2>/dev/nullBus 001 Device 003: ID 0a5c:217f Broadcom Corp. BCM2045B (BDC-2.1)Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 224 Wireless bDeviceSubClass 1 Radio Frequency bDeviceProtocol 1 Bluetooth bMaxPacketSize0 64 idVendor 0x0a5c Broadcom Corp. idProduct 0x217f BCM2045B (BDC-2.1) bcdDevice 7.48 iManufacturer 1 Broadcom Corp iProduct 2 Broadcom Bluetooth Device iSerial 3 7CE9D3DD99CF bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 0x00d8 bNumInterfaces 4 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 0mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 3 bInterfaceClass 224 Wireless bInterfaceSubClass 1 Radio Frequency bInterfaceProtocol 1 Bluetooth iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0010 1x 16 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 224 Wireless bInterfaceSubClass 1 Radio Frequency bInterfaceProtocol 1 Bluetooth iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0000 1x 0 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0000 1x 0 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 1 bNumEndpoints 2 bInterfaceClass 224 Wireless bInterfaceSubClass 1 Radio Frequency bInterfaceProtocol 1 Bluetooth iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0009 1x 9 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0009 1x 9 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 2 bNumEndpoints 2 bInterfaceClass 224 Wireless bInterfaceSubClass 1 Radio Frequency bInterfaceProtocol 1 Bluetooth iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0011 1x 17 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0011 1x 17 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 3 bNumEndpoints 2 bInterfaceClass 224 Wireless bInterfaceSubClass 1 Radio Frequency bInterfaceProtocol 1 Bluetooth iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0020 1x 32 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0020 1x 32 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 4 bNumEndpoints 2 bInterfaceClass 224 Wireless bInterfaceSubClass 1 Radio Frequency bInterfaceProtocol 1 Bluetooth iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 5 bNumEndpoints 2 bInterfaceClass 224 Wireless bInterfaceSubClass 1 Radio Frequency bInterfaceProtocol 1 Bluetooth iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 255 Vendor Specific Subclass bInterfaceProtocol 255 Vendor Specific Protocol iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x84 EP 4 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0020 1x 32 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x04 EP 4 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0020 1x 32 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 3 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 254 Application Specific Interface bInterfaceSubClass 1 Device Firmware Update bInterfaceProtocol 1 iInterface 0 Device Firmware Upgrade Interface Descriptor: bLength 7 bDescriptorType 33 bmAttributes 7 Will Not Detach Manifestation Tolerant Upload Supported Download Supported wDetachTimeout 5000 milliseconds wTransferSize 64 bytesDevice Status: 0x0001 Self Powered

   Last edited by MAFoElffen; March 29th, 2023 at 10:42 PM.

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4. March 29th, 2023 #4

   Holger_Gehrke

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   Re: Wifi speed slow downs when i connect my bluetooth earbuds on ubuntu 22.04

   If your WLAN operates in the 2.4 GHz frequency range (802.11b/g/n/ax) then some interference with Bluetooth is to be expected. Newer / better Bluetooth devices do some frequency hopping to minimize interference, but in an environment with lots of sources of electromagnetic radiation this can fail. If you can set your WLAN to operate in the 5 GHz range, problems with interference from Bluetooth should vanish. Also badly shielded USB 3 cables have on occasion produced interference in the 2.4 GHz range.

   Holger

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5. March 30th, 2023 #5

   

   MAFoElffen

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   Re: Wifi speed slow downs when i connect my bluetooth earbuds on ubuntu 22.04

   +1 with Holger --

   This happens on Windows also. It is not an OS issue. It is a hardware issue. This an answer from Microsoft:

   WiFi signals and Bluetooth signals both use the 2.4 Ghz frequency band, and this can cause them to interfere with each other.

   There are two ways you can avoid this interference:
   1- Switch to a different WiFi channel. Try one of the three non-overlapping channels: 1, 6 and 11.
   2- Switch your WiFi to the 5 Ghz frequency band.

   Then it went on to suggested to just turn off the Bluetooth altogether. (LOL) On Laptops, it isn't just the same card doing both, it also uses just one antenna for both.

   Originally Posted by Holger_Gehrke

   Also badly shielded USB 3 cables have on occasion produced interference in the 2.4 GHz range.

   Thank you Holger. I learned something new today.

   Last edited by MAFoElffen; March 30th, 2023 at 07:12 AM.

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6. March 30th, 2023 #6

   thehalfburned

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   Re: Wifi speed slow downs when i connect my bluetooth earbuds on ubuntu 22.04

   can you guide me on how can i switch my wifi channels?

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7. March 30th, 2023 #7

   thehalfburned

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   Re: Wifi speed slow downs when i connect my bluetooth earbuds on ubuntu 22.04

   so my wifi was on channel 1 and i changed it to both 6 and 11 and the results were the same

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8. March 30th, 2023 #8

   Holger_Gehrke

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   Re: Wifi speed slow downs when i connect my bluetooth earbuds on ubuntu 22.04

   That's difficult to do since at least half the work is setting your WLAN Access Point to use a channel in the right band. Actually that might on occasion be all you have to do, if the options "Band: Automatic" and "Channel: Default" in the Ubuntu WLAN settings work the way they should (if they work right, it will get the values for these settings from the AP).

   Channels 1,6, and 11 are all in the 2.4 GHz Band. You first have to select the 5 GHz band. The 5 GHz Channels mostly have higher channel numbers, on my system they go up in several irregular jumps (there are a lot of channels in that band that are reserved for some other uses ...) all the way to 196.

   Holger

   Last edited by Holger_Gehrke; March 30th, 2023 at 05:17 PM.Reason: added information on 5 GHz channels

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