linux-firmware 20210208.b79d239-1 breaks WiFi

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linux-firmware 20210208.b79d239-1 breaks WiFi

Postby graysky » Wed Feb 17, 2021 10:53 am

It is known that the currently shipped upstream release can break WiFi on RPi-0, RPi-3B, and RPi-4B. If you use WiFi on these, it is a good idea to avoid this new package until upstream fixes the problem. Add the package to IgnorePkg in
/etc/pacman.conf.

Please do not open new threads. If you feel like discussing, use this one.

Upstream bug reports:
https://bugzilla.kernel.org/show_bug.cgi?id=211731
https://github.com/raspberrypi/linux/issues/4145

Recovery procedure:
For RPi4B make sure your system is up-to-date/raspberrypi-firmware-20210217 should fix things.

For other models a temp fix is to downgrade and wait for upstream to fix:
1. Downgrade
1a. From your cache if you have it:
Code: Select all
# pacman -U /var/cache/pacman/pkg/linux-firmware-20201218.646f159-1-any.pkg.tar.xz

1b. Or from here if you do not have it cached:
Code: Select all
# pacman -U http://tardis.tiny-vps.com/aarm/packages/l/linux-firmware/linux-firmware-20201218.646f159-1-any.pkg.tar.xz

2. Reboot

I know the Pi0 is WiFi only and the upstream release breaks your network. If headless, you need another armv6h box and a call to pacman to install to the physically removed the uSD card to recover.
Code: Select all
# mount /dev/sdXY /mnt
# pacman -U /path/to/linux-firmware-20201218.646f159-1-any.pkg.tar.xz --sysroot /mnt
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Re: linux-firmware 20210208.b79d239-1 breaks WiFi

Postby mdevaev » Wed Feb 17, 2021 10:11 pm

Why don't you want to make a package with downgrade? Because of this breakdown, hosts become unattended if Wi-Fi was the only way to connect to the network. This is particularly painful for Zero. Users may not be aware of this, update Zero, and lose access to them. I have a thousand Zero and Arch users for my software who can mess up their devices. The broken package continues to do this, because not everyone is constantly following the news.
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Re: linux-firmware 20210208.b79d239-1 breaks WiFi

Postby graysky » Thu Feb 18, 2021 11:31 am

Kevin pushed an update to firmware-raspberrypi that should cover at least the RPi4B use case.
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Re: linux-firmware 20210208.b79d239-1 breaks WiFi

Postby graysky » Sat Feb 20, 2021 10:45 pm

This should be under control with packages in all mirrors now. Please use the discussion thread linked above if there are issues on your systems. Closing now.
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