Groups > linux.debian.bugs.dist > #1053424

Bug#985632: firmware-brcm80211: [REGRESSION] RPi4B 5GHz WiFi stopped working with 20210208-4, 20201218-3 was fine

From	Ryutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#985632: firmware-brcm80211: [REGRESSION] RPi4B 5GHz WiFi stopped working with 20210208-4, 20201218-3 was fine
Date	2021-03-23 01:40 +0100
Message-ID	<BVDfr-1nN-3@gated-at.bofh.it> (permalink)
References	<BUULn-7gH-3@gated-at.bofh.it> <BVikF-5qh-1@gated-at.bofh.it> <BVySu-77d-15@gated-at.bofh.it> <BUULn-7gH-3@gated-at.bofh.it> <BVySu-77d-15@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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Hi Maximilian, thank you again for your response.

> but are you sure that these
> bootflags are still adequate for the latest cypress firmware?

What did you mean by "bootflags"??
Did you mean /proc/cmdline (i.e. cmdline.txt in Raspberry Pi)?

> concerning bluetooth unfortunately this seems missing firmware
> in latest upstream firmware git (see #962038 ) or possible wget info
> https://wiki.debian.org/RaspberryPi4#Bluetooth

I know that bluetooth interferes with 2.4GHz WiFi with pure Debian
packages as reported in
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=984844

I do not see any intererence between bluetooth and 5GHz WiFi.
I doubt the intererence as bluetooth frequency does not overlap with 5GHz WiFi at all.
With the firmware 20210208-4, 2.4GHz WiFi works fine provided that
bluetooth is turned off by rfkill etc.

I am running a combination of pure Debian packages and
encountered the reported symptom. What is a Debian way to
use 5GHz WiFi? Do you need additional information?

> this should not be reproducible as 20210315-1 and 20210315-1~exp1 are
> unchanged (just uploaded into experimental before unstable).

I will re-check 20210315-1.

Best regards, Ryutaroh

Thread

Bug#985632: firmware-brcm80211: [REGRESSION] RPi4B 5GHz WiFi stopped working with 20210208-4, 20201218-3 was fine Ryutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp> - 2021-03-21 02:10 +0100
  Bug#985632: firmware-brcm80211: [REGRESSION] RPi4B 5GHz WiFi stopped working with 20210208-4, 20201218-3 was fine Ryutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp> - 2021-03-21 02:20 +0100
  Bug#985632: firmware-brcm80211: [REGRESSION] RPi4B 5GHz WiFi stopped working with 20210208-4, 20201218-3 was fine maximilian attems <maks@stro.at> - 2021-03-21 20:10 +0100
    Bug#985632: firmware-brcm80211: [REGRESSION] RPi4B 5GHz WiFi stopped working with 20210208-4, 20201218-3 was fine Ryutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp> - 2021-03-22 03:20 +0100
      Bug#985632: firmware-brcm80211: [REGRESSION] RPi4B 5GHz WiFi stopped working with 20210208-4, 20201218-3 was fine maximilian attems <maks@stro.at> - 2021-03-22 21:00 +0100
        Bug#985632: firmware-brcm80211: [REGRESSION] RPi4B 5GHz WiFi stopped working with 20210208-4, 20201218-3 was fine Ryutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp> - 2021-03-23 01:40 +0100
          Bug#985632: firmware-brcm80211: [REGRESSION] RPi4B 5GHz WiFi stopped working with 20210208-4, 20201218-3 was fine Ryutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp> - 2021-03-23 02:20 +0100

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