Bug 2222034

Summary:	wifi very slow when bluetooth is enabled
Product:	[Fedora] Fedora	Reporter:	geoffrey.bonneville
Component:	linux-firmware	Assignee:	David Woodhouse <dwmw2>
Status:	CLOSED NOTABUG	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	38	CC:	dwmw2, jforbes, jwboyer, kernel-maint, laura, pbrobinson
Target Milestone:	---	Keywords:	Desktop, Regression
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-08-06 15:04:44 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description geoffrey.bonneville 2023-07-11 15:51:59 UTC

My wifi card is an Intel Killer AX1650s.

Since a few weeks or months, I can't tell for sure, if I enable bluetooth and connect a bluetooth headphone, my wifi speed is very low, to the point I can't work at all.

I tried to debug the issue by trying to set bt_coex_active=0, but it did not make any improvements.

Reproducible: Always

Steps to Reproduce:
1.Connect to a wifi access point
2 Do a speed test and note the results
3.Enable wifi & generate any bluetooth traffic.
4.Do a speed test and compare with previous results
Actual Results:  
I get > 100mbps when bluetooth is disabled compared to < 100kbps when bluetooth is enabled.

Expected Results:  
Speed test should be the same when bluetooth is enabled.

My wifi card is an Intel Killer AX1650s.

Comment 1 Peter Robinson 2023-07-12 10:26:33 UTC

> Since a few weeks or months, I can't tell for sure, if I enable bluetooth
> and connect a bluetooth headphone, my wifi speed is very low, to the point I
> can't work at all.

Unfortunately you're going to need to do some bisect between kernel/firmware versions to work out when it regressed. This bug report is way too vague to actually be able to action anything here.

Comment 2 geoffrey.bonneville 2023-08-07 21:13:21 UTC

It turns out one of the two antennas were disconnected inside my laptop.