This just happened again, and I believe I was running the latest
(Ubuntu) kernel. No, not the upstream one.. It just seemed too much
work.. and wouldn't prove anything if I can't get Ubuntu to freeze as
that doesn't always happen.. I guess I really should get around to this
as if it would happen again it would at least prove, not fixed upstream.
The cause might however be in bcmwl (or an interaction between it in the
kernel). I think the former here is *it*:
lsmod |grep wl
wl 6369280 0
cfg80211 540672 1 wl
Installed files" of bcmwl has no .ko but have files such as a Makefile:
/usr/src/bcmwl-6.30.223.248+bdcom/patches/0015-add-support-for-
Linux-3.18.patch
[then this is a build a .ko, right? Do I need then linux-sources, I
believe I don't and haven't had it installed in the past but I have it
installed now, may have done that at some point, myself.. It hasn't been
updated in a while, is at 3.19.0.17.16. I'm trying to learn thing so I
could maybe be more helful in the future and/or not send bugus report if
this one is it..]
What I'm running now:
uname -a
Linux Ryksugan 3.19.0-27-generic #29-Ubuntu SMP Fri Aug 14 21:43:37 UTC 2015
x86_64 x86_64 x86_64 GNU/Linux
In case I forgot to restart after last kernel upgrade (I have Ksplice, but ages
ago, it seemed to just stop working), then I would have been running
/boot/initrd.img-3.19.0-26-generic
Might only have worked pre-Nov 2014. It's just not something I had to do
very often (or decided to try, to turn WiFi off, but it should always be
safe). Possibly this might be even older and I just didn't try to
trigger it.
Very probably this might have to do with this, (and could very well has
started around 3.17/3.18 timeframe):
bcmwl (6.30.223.248+bdcom-0ubuntu2) vivid; urgency=medium
* debian/dkms.conf.in,
debian/patches/0014-add-support-for-Linux-3.17.patch,
debian/patches/0015-add-support-for-Linux-3.18.patch:
- Add support for Linux 3.17 (LP: #1358966).
Credit for the patch goes to Brian Norris.
- Add support for Linux 3.18 (LP: #1358966).
Credit for the patch goes to Krzysztof Kolasa.
-- Alberto Milone <[email protected]> Thu, 06 Nov 2014
18:43:27 +0100
bcmwl (6.30.223.248+bdcom-0ubuntu1) utopic; urgency=medium
* New upstream release: (LP: #1342645)
- This is an official public release from Broadcom.
* debian/dkms.conf.in:
- Drop patches for kernels 3.10 (now upstream)
-- Robert Ancell <[email protected]> Fri, 01 Aug 2014
11:09:43 +1200
ls -lrt /boot/initrd.img-3.1*
-rw-r--r-- 1 root root 19976179 apr 10 17:20 /boot/initrd.img-3.13.0-47-generic
*
-rw-r--r-- 1 root root 21782845 apr 19 13:54 /boot/initrd.img-3.19.0-15-generic
*
-rw-r--r-- 1 root root 21737800 jún 3 21:54
/boot/initrd.img-3.19.0-20-lowlatency *
-rw-r--r-- 1 root root 21782780 ágú 10 20:31 /boot/initrd.img-3.19.0-26-generic
-rw-r--r-- 1 root root 21788996 ágú 15 18:24 /boot/initrd.img-3.19.0-27-generic
marked with a star those I've not run in ages, just didn't clean up in
case this doesn't resolve on day. The oldest or next oldest, I think
worked at some point(I had more, but had to free space on /boot and
deleted rarely used ones).
** Summary changed:
- Kernel PANIC often when turning WiFi off
+ Kernel PANIC often when turning WiFi off, on current 3.19.0-27-generic (see
text, my be one older), happened before on previous kernel, and one or two
before that one.
** Summary changed:
- Kernel PANIC often when turning WiFi off, on current 3.19.0-27-generic (see
text, my be one older), happened before on previous kernel, and one or two
before that one.
+ Kernel PANIC often when turning WiFi off, on current 3.19.0-27-generic (see
text, my be one older), happened before on previous kernel, and one or two,
probably more, before that one.
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https://bugs.launchpad.net/bugs/1482892
Title:
Kernel PANIC often when turning WiFi off, on current 3.19.0-27-generic
(see text, my be one older), happened before on previous kernel, and
one or two, probably more, before that one.
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