--- Begin Message ---
- To: Debian Bug Tracking System <submit@bugs.debian.org>
- Subject: linux-image-5.10.0-9-amd64: Permanent blinking of wireless led
- From: "Hans-J. Ullrich" <hans.ullrich@loop.de>
- Date: Thu, 16 Dec 2021 17:06:21 +0100
- Message-id: <163967078129.26223.3669447665659454252.reportbug@localhost>
Package: linux-image-5.10.0-9-amd64
Version: 5.10.70-1
Severity: normal
Dear Maintainer,
with the latest kernel version (change from *-8-amd64 to *-9-amd64 and higher), I discovered an annoying issue.
This issue shows, that the wireless led is permanently blinking, but it should only blink, when real traffic is
received.
Examination showed, that the permanent blinking is caused by the router (it is a Fritz!Box), which is permanently
sending brodcast traffic. However, the indication of broadcast traffic with the led was suppressed in kernels with version -8-amd64 and lower, and only "real" traffic was indicated by the led.
Behaving this way, the led indication is very useful, as normal traffic will let the led blink during traffic I know I had initiated (like calling a website). Permanently blinking showed, something fishy is going on and I should examine it: Is a download/update running? Is there a large mail coming? Does someone have access to my system? Is there a bruteforce attack ongoing?
So, this function is really important for me, and I would like to have it back. At the moment I am staying with kernel *-8-amd64. Please note, I saw this on kali linux, too.
I believe, this issue is in the atheros module (I am using an AR542x Wireless card), and the module is ath5.ko.
If this is really an issue in this module, please take a look at the ath9.ko module, maybe the same issue appears there, too.
It would be very nice, if you could take a look at this. Please feel free, to ask for more information.
Network dumps or whatever can be delivered, if needed.
Thank you very much for reading this and any help.
Best regards
Hans
-- System Information:
Debian Release: 11.1
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 5.10.0-8-amd64 (SMP w/2 CPU threads)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_CRAP, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE=de
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages linux-image-5.10.0-9-amd64 depends on:
ii initramfs-tools [linux-initramfs-tool] 0.140
ii kmod 28-1
ii linux-base 4.6
Versions of packages linux-image-5.10.0-9-amd64 recommends:
ii apparmor 2.13.6-10
ii firmware-linux-free 20200122-1
Versions of packages linux-image-5.10.0-9-amd64 suggests:
pn debian-kernel-handbook <none>
ii extlinux 3:6.04~git20190206.bf6db5b4+dfsg1-3+b1
ii grub-pc 2.04-20
pn linux-doc-5.10 <none>
--- End Message ---