That's a different issue, LP: #2063365, which only started occurring
after the recent wifi firmware bump
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https://bugs.launchpad.net/bugs/1861338
Title:
RPI4 wifi unreliable when usb3
It's still happening, Raspberry Pi 4 ( Raspberry Pi RAS-4-4G - Model B / 4 GB
SDRAM (1822096))
and Ubuntu Core Servier 23.10
When I connect SSD drive to USB3 port (booted from SDCard), internal
WiFi doesn't work, and most of the time I can see error:
brcmfmac: brcmf_set_channel: set chanspec
I've been unable to replicate this so far; tried with four different
USB-SATA cables attaching boot storage to USB3 on a Pi 4B and a Pi 400;
wifi worked happily in each case. Given this was expired for Eoan (a
couple of years ago) I'll close this as invalid for now; please re-open
if this is still
[Expired for linux-raspi2 (Ubuntu Eoan) because there has been no
activity for 60 days.]
** Changed in: linux-raspi2 (Ubuntu Eoan)
Status: Incomplete => Expired
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OK, thx for your investigation.
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https://bugs.launchpad.net/bugs/1861338
Title:
RPI4 wifi unreliable when usb3 storage is attached
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I tried with my external drive, which has a long usb cable, and it
worked well. For the other link you've mentioned, I think you could
suggest him to put it away from raspberry pi.
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I strongly suspect if there's any.As far as I've seen, all suggestions
are physical solutions. I would suggest to put it in the known issue
somewhere so that people may be aware of this fact.
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So sounds this is a hw desgin issue? Or do you know if there is a
software fix for it, then we could integrate this fix to the ubuntu
raspi2.
Thx.
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By the way, when I plugged in the usb, the iwconfig commmand suggests
that the signal quality dropped from -30dBm to -40dBm, before I lost the
connection (my raspberry pi is headless)
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I'm using Ubuntu 18.04.2 LTS and it seems there's no upgrade I can
fetch.
I'm at 1.173.16 for linux-firmware, 1.20190819-0ubuntu0.18.04.1 for
linux-firmware-raspi2, 5.3.0-1018-raspi2 for kernel.
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Could you please upgrade the linux-firmware, then redo the test, I
remember there is a update on the wifi firmware.
thx.
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https://bugs.launchpad.net/bugs/1861338
Title:
RPI4 wifi
I found this on the internet:
https://www.intel.com/content/dam/www/public/us/en/documents/white-
papers/usb3-frequency-interference-paper.pdf
When I pinged my router, I've seen some packets had a greater latency
then others, so that could have been an interference.
I couldn't test 5GHz as I
Sorry to reply to an inactive thread, but I've experienced the same
issue
I really want to solve this issue, so any idea how I can help?
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Title:
Since could not reproduce this bug so far, set it to incomplete.
** Changed in: linux-raspi2 (Ubuntu Eoan)
Status: New => Incomplete
** Changed in: linux-raspi2 (Ubuntu)
Status: Triaged => Incomplete
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** Also affects: linux-raspi2 (Ubuntu Eoan)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1861338
Title:
RPI4 wifi unreliable when usb3 storage is
We had a similar bug before, it said the issue could be reproduced with
specific ssd and usb->ssd case.
https://bugs.launchpad.net/ubuntu/+source/linux-raspi2/+bug/1857760
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I don't have another usb3 one at the moment, I'll see what I can find.
However, I'm also starting to think it may be RF interference from the
usb3 port and or stick. If I grab the rpi4 near the usb/ethernet block
in the right place, the problem seems to go away a bit. possibly
something similar
I just did a test, could not reproduce this issue. Maybe your usb
storage consumes too much power, could you please change other usb
sticks to redo the test?
on the usb-serial console, my Wifi is enabled and ping a website:
ubuntu@ubuntu:~$ uname -a
Linux ubuntu 5.3.0-1017-raspi2 #19+otg SMP Wed
** Description changed:
On RPI4, if you set up netplan to use wifi, and plug in a usb3 storage
device to one of the 2x usb3 ports (the ones closest to the ethernet
port), wifi will sudden stop working. If you unplug the usb stick while
running a ping, it will usually start working again
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