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Bug 663772 - >=sys-kernel/gentoo-sources-4.14 break BCM2046B1 mini-card
Summary: >=sys-kernel/gentoo-sources-4.14 break BCM2046B1 mini-card
Status: UNCONFIRMED
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Current packages (show other bugs)
Hardware: AMD64 Linux
: Normal normal (vote)
Assignee: Gentoo Kernel Bug Wranglers and Kernel Maintainers
URL: https://bugzilla.kernel.org/show_bug....
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2018-08-16 11:13 UTC by MickKi
Modified: 2020-02-01 09:36 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---


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Description MickKi 2018-08-16 11:13:26 UTC
>=gentoo-sources-4.14.x cause bind/unbind uevents on hardware with BCM2046B1 mini-card.

Reproducible: Always

Actual Results:  
CPU is pegged at 100% with the kernel looping bind and unbind of the USB mini-card.


Would it be possible to back port the patch provided in the above referenced URL, to revert the bind/unbind kernel commit entries?  On the 4.14.x releases the lines requiring removal are different to what is shown in the URL.
Comment 1 Mike Pagano gentoo-dev 2020-01-31 23:26:57 UTC
Is this still an issue?  Some workarounds are documented here:

https://askubuntu.com/questions/1028883/ubuntu-18-04-systemd-udevd-uses-high-cpu-conflict-with-wifi
Comment 2 MickKi 2020-02-01 09:36:10 UTC
(In reply to Mike Pagano from comment #1)
> Is this still an issue?  Some workarounds are documented here:
> 
> https://askubuntu.com/questions/1028883/ubuntu-18-04-systemd-udevd-uses-high-
> cpu-conflict-with-wifi

Yes, still an issue on gentoo-sources-4.19.x.  I will try these workarounds/fixes at the next kernel release and see if they work - thanks for sharing.  TBH this is now quite an old system and with Intel throwing it to the kerb with no further microcode updates, I don't know if there is enough of a user base (in any distro) to merit fixing it.