Fwd: Monitor mode (w. TP-Link WN722N & Fedora)
by Fulko Hew
F.Y.I. I also sent this to the Wireshark user's list to see if someone
there can help me.
------
I'm trying to sniff my Wifi for a project, so I purchased a TP-Link WN722N
USB adapter
and followed the various instructions I've found on the Web.
(I don't know if it's a Wireshark issue, a driver issue, or a Fedora issue.)
ip link set wlan0 down
iw wlan0 set monitor none
ip link set wlan0 up
When I plugged the adapter in I saw a new device 'wlp0s20f0u3' in addition
to my internal adapter 'wlps20'.
Using the instructions, it failed:
# iw set wlp0s20f0u3 down
# iw wlp0s20f0u3 set monitor none
command failed: No such device (-19)
--> I don't know why?
So now that I have 2 adapters, I enabled the TPLink as my network
connection (successfully) and tried to put my on-board adapter
into monitor mode, instead:
# iw wlp2s0 set monitor none
# iwconfig
wlp2s0 IEEE 802.11 Mode:Monitor Tx-Power=22 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:on
# iplink set wlp2s0 up
#
It looks good, so I start Wireshark (v 2.28) (Fedora 26),
and look at Wireshark's 'capture options' table, it shows the interface,
but under the heading 'Mon Mode', it shows disabled.
(I also have 'Use promiscuous mode on all interfaces' enabled.)
--> Why does it show disabled?
--> Is it really disabled ?
--> How do I know which frequencies (or bands) it might be listening on?
I started sniffing, but it doesn't capture anything.
... And after about 2 minutes, I get a pop-up error message from Wireshark
saying:
"The network adapter on which the capture was being
done is no longer running; the capture has stopped."
Where to start ?
Thanks
Fulko
3 years, 6 months
Reload kernel?
by ToddAndMargo
Hi All,
Is there a way to reload or restart the kernel without
having to reboot?
Many thanks,
-T
--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
When we ask for advice, we are usually looking for an accomplice.
-- Charles Varlet de La Grange
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3 years, 6 months
Paste into GnuCash problem
by ToddAndMargo
Hi All,
Fedora 32, x64
Xfce 4.14
gnucash-4.1-1.fc32.x86_64
I have a situation where I have the Date, Number, Description, Transfer,
Payment, Charge loaded into the secondary clipboard (<ctrl><C>). (Linux
has four clipboards.)
When I paste (ctrl<V>) into GnuCash, I can't get it to paste
across boundaries. In other words everything goes into "date".
I have tried tabs and returns as delimiters. (I can insert
anything I want if it is on the ascii table.)
When typing directly into GnuCash, a tabs moves you to the
next category.
Anyone know a workaround? Any way to make GnuCash think I
am typing and not pasting?
Many thanks,
-T
3 years, 6 months
Same issue...
by Robert
Hi
I have been experiencing issues with Firefox 80.0.1 on a Lenovo Laptop, which also has a Ryzen processor in it. I have had to resort to using Chrome Browser as it is to unreliable.
Not sure this is the appropriate method to respond to the Email I received below but I thought I would give it a try.
Robert
"
I started to get frequent tabs crashes from the moment I
recently moved to new laptop.
Lenovo E14 Gen 2 with Ryzen 4500U has Firefox tab crash
often with the same 16GB which had no problems on oldish
Dell Latitude with Intel Gen 6th.
cheers, L.
On 18/05/2020 20:00, Max Pyziur wrote:
> Greetings,
>
> Lately, I've noticed that different tabs that I have open
> in Firefox are crashing. This seems to have started
> recently. They can be restored easily, but there's a
> nuisance factor here.
>
> Anyone else?
>
> Hardware/Software basic deets:
> Dell XPS 13 L322X laptop, vintage circa 2013.
> 1TB Samsung Solid state drive
> 8GB RAM
> F32 - everything has been updated
>
> Max Pyziur
> pyz(a)brama.com
"
3 years, 6 months
Re: Reload kernel?
by J.Witvliet＠mindef.nl
Funny.
This is exactly a selling item for SLES.
Reloading the kernel without rebooting.
From: "Patrick O'Callaghan" <pocallaghan(a)gmail.com<mailto:pocallaghan@gmail.com>>
Date: Saturday, 26 September 2020 at 10:42:34
To: "users(a)lists.fedoraproject.org" <users(a)lists.fedoraproject.org<mailto:users@lists.fedoraproject.org>>
Subject: Re: Reload kernel?
On Sat, 2020-09-26 at 00:38 -0700, ToddAndMargo via users wrote:
> Hi All,
>
> Is there a way to reload or restart the kernel without
> having to reboot?
No.
poc
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This message may contain information that is not intended for you. If you are not the addressee or if this message was sent to you by mistake, you are requested to inform the sender and delete the message. The State accepts no liability for damage of any kind resulting from the risks inherent in the electronic transmission of messages.
3 years, 6 months
Flatpak - Part 2
by David
Thank you all, but again, I had to just resolve the issue with my own
noggin.
[me@localhost ~]$ sudo flatpak update
[sudo] password:
Looking for updates…
Info: org.fedoraproject.Platform is end-of-life, with reason: Fedora
31 runtime is no longer supported.
Nothing to do.
[me@localhost ~]$ flatpak remove org.fedoraproject.Platform
Similar installed refs found for ‘org.fedoraproject.Platform’:
1) runtime/org.fedoraproject.Platform/x86_64/f31 (system)
2) runtime/org.fedoraproject.Platform/x86_64/f32 (system)
3) All of the above
Which do you want to use (0 to abort)? [0-3]: 1
ID Branch Op
1. [-] org.fedoraproject.Platform f31 r
Uninstall complete.
[me@localhost ~]$
Again, the point was, that new users to Linux are not going to ph*ck with
all that flatpak nonsense.
But I will keep using flatpaks and appimages in Rawhide, because I
am a glutton for punishment, and want lots of attention. LOL !
My plan as stated before, is simply to show people who have never used
Fedora or Rawhide, how to get started, the pro & cons, the pitfalls, and
most
of all that you will be almost entirely on your own, and explain all that
using
newbie-language, street-talk, slang, vulgarities, comedy, metaphors, puns,
etc.
But I do love you all. Don't get me wrong.
David Locklear
3 years, 6 months
flatpak question
by David
I get a message when trying to update flatpak
$ flatpak update
Looking for updates…
Info: org.fedoraproject.Platform is end-of-life, with reason:
Fedora 31 runtime is no longer supported.
Nothing to do.
$
I do not think a novice user of Linux is going to find it simple to use
flatpaks. The runtime thing is still
way over my head, and all the different hubs ( two ? ), and how to know
which hub is better, flathub or
Fedorahub. ( I hear somebody out there joking..... P***hub, silly )
While I have your attention,
I spent about 5 hours playing with appimages, and posted something
about that here a few days ago. I have not yet dived deep into the
topic, but my initial experience is that
appimages are not for newbies, in their present form. It was suggested
to me to discuss such things
elsewhere on the community blog. I attempted that, but it has been 3
days now, and my post there
is still pending. Another similar post I made in the other suggested
Fedora forum, did not reach
my intended audience. So I will have to think of some other way to
express my ideas or rants. Once I feel
confident, in the topic I want to discuss, maybe I will make a YouTube
video. I am not there yet.
Today's update of Rawhide, went smoothly. A tiny change to the
kernel. It is worth noting, that since
the kernel is allegedly hovering around 27.8 million lines of code, that if
one line gets changed, the user
is probably not going to notice much difference, unless that particular
thing was something they were
hoping would improve. Much of the changes appear geared toward future
hardware that has not
even hit the market yet. Meaning, one of many reasons a novice Linux
user should not use Rawhide, is
that the changes that might break their system are unlikely to give them
any kind of noticeable improvement
in their own user experience. Some other updates today were that
packages like dracut and criu were rebuilt
from fc33 to fc34. Many packages at this early stage in fc34 development,
are going to be identical
to what is in the upcoming beta release of Fedora 33, for example, the
package or client "gnumeric," is still fc33.
I do not know yet what those package differences are or what all that
entails, but it is on my list of things to learn.
My current vague grasp of the topic is that the package is compiled ( or
recompiled ? ), with a newer version of the newer
version of the tools that are used to build the packages for fc34. One
important characteric of Rawhide is
that many of the most important system components are git-versions of that
package,
and the git-version was only updated from one that might have been a few
days stale. A novice would never have
any idea what any of that means, but I am trying to self-teach myself.
And on a similar note, many important
system files are "rc candidates" such as mesa and the kernel. I assume
many other packages are identical
to what is going to be in Fedora 33 Beta. For example, x.org files and
at least half the dependencies or
files that other packages require to run, are still fc33, at this early
stage in fc34 history. All that is just my
own observation, and irrelevant. I am just trying to learn the correct
way to express things about
Fedora and Rawhide. Another reason to discourage a novice from using
Rawhide, is that much of the files
that are often updated are files related to writing software or programming
such as python, perl, rust, etc. Most
people do not need the newer versions of those packages. I do plan to
do an install of Fedora 33 on hardware in
December, and live in that for a while. But I have not yet had a reason
for myself to stop using Rawhide.
One of the reasons that I stopped distro-hopping a year ago, is that the
only thing I would gain from using some
other distro like SparkyLinux, LInux Mint, Netrunner, or PopOS!, is just to
see how those other distros modify or customize
the theming of their packages, some of which seem to only just get renamed
( or rebadged ?? ) in those other lesser distros.
And I always use my own wallpapers, so the tiny one-man distros that mainly
just have fancy wallpapers, probably
are not my cup of tea. On a related note, I will probably never try
Cucumber Linux: https://cucumberlinux.com/about.php
Good Day from Arcola, Texas USA.
David Locklear
novice user of Rawhide
3 years, 6 months
Re: Reload kernel?
by J.Witvliet＠mindef.nl
Just another thought:
I observed (totally different conditions), that the system became sluggish beyond usable.
In most of those cases it was a lame dns-server that was to blame: active, but not resolving.
From: "Roger Heflin" <rogerheflin(a)gmail.com<mailto:rogerheflin@gmail.com>>
Date: Sunday, 27 September 2020 at 13:41:32
To: "Community support for Fedora users" <users(a)lists.fedoraproject.org<mailto:users@lists.fedoraproject.org>>
Cc: "ToddAndMargo" <ToddAndMargo(a)zoho.com<mailto:ToddAndMargo@zoho.com>>
Subject: Re: Reload kernel?
From the vmstat, all of the time is idle, you do not have any wait,
generally if you have a disk having issues the iowait will go up, but
you have zero.
Also from vmstat, the system time is low.
So the gui gets slow, a reboot clears it, does it clear up?
You might want to include a messages file from +=5 minutes of the the
issue happening.
Weird kernel bugs causing kernel lock issues would produce this
behavior, and would don't usually show on vmstat, but they can be seen
in the messages file.
On Sat, Sep 26, 2020 at 7:51 PM ToddAndMargo via users
<users(a)lists.fedoraproject.org> wrote:
>
> >> On 2020-09-26 03:20, Patrick O'Callaghan wrote:
> >>> On Sat, 2020-09-26 at 01:45 -0700, ToddAndMargo via users wrote:
> >>>> On 2020-09-26 01:41, Patrick O'Callaghan wrote:
> >>>>> On Sat, 2020-09-26 at 00:38 -0700, ToddAndMargo via users wrote:
> >>>>>> Hi All,
> >>>>>>
> >>>>>> Is there a way to reload or restart the kernel without
> >>>>>> having to reboot?
> >>>>>
> >>>>> No.
> >>>>>
> >>>>> poc
>
>
> >>>> Poop!
> >>>>
> >>>> Thank you for the confirmation.
> >>>>
> >>>> Is the file system part of the kernel? If not, is there
> >>>> a way to restart it without rebooting?
>
>
> >>> Depends what you mean by "the file system". Some filesystems are
> >>> reloadable (either as a module or as FUSE), but others aren't. The
> >>> underlying filesystem layer is a fixed part of the kernel.
> >>>
> >>> Maybe if you explained what you're trying to do, someone might be able
> >>> to help.
> >>>
> >>> poc
>
> >>
> >> FC 32, x64
> >> Ext4
> >> Xfce 4.14
> >>
> >> Occasionally, my computers slows down. I have not been
> >> able to pin down why. Top shows very little memory usage.
> >>
> >> A 1 hour, 12 minute dump (dump/restore) takes 15 hours
> >> when this happens. Pop up menus start to lag behind
> >> the mouse
> >>
> >> I am trying to get around the reboot thing.
> >>
> >> -T
> >>
> >> A reboot ALWAYS fixes the issue.
>
> On 2020-09-26 16:22, Roger Heflin wrote:
> > Usually that slow down is swapping. Have you checked to see how much
> > swap is in use?
>
> top - 17:39:41 up 1:55, 1 user, load average: 0.26, 0.37, 0.37
>
> Tasks: 245 total, 2 running, 243 sleeping, 0 stopped, 0 zombie
>
> %Cpu(s): 3.6 us, 0.8 sy, 0.0 ni, 95.2 id, 0.2 wa, 0.2 hi, 0.1 si,
> 0.0 st
>
> MiB Mem : 15896.7 total, 11478.9 free, 1867.8 used, 2550.0 buff/cache
>
> MiB Swap: 8031.0 total, 8031.0 free, 0.0 used. 13333.0 avail Mem
>
>
> >
> > I have machines with 10gb of ram and that is not enough and used to
> > get slowdowns prior to me setting up earlyoom. With earlyoom it
> > generally kills sets of firefox tabs and generally works ok, but I
> > have had things get bad enough that it keeps killing the tab I want to
> > view and then I have to find someone else to kill so I have enough
> > ram.
>
> When it happens, it is instant
>
> > if you have sysstat / sar installed it would have data you could view
> > with sar -S that would tell you if it is swapping/paging.
> >
> > vmstat 1
> > swpd column, that is the numberof kb swapped, the higher it gets the
> > uglier it gets.
>
> $ vmstat 1
> procs -----------memory---------- ---swap-- -----io---- -system--
> ------cpu-----
> r b swpd free buff cache si so bi bo in cs us sy
> id wa st
> 1 0 0 11738732 150112 2474552 0 0 70 21 289 516 3
> 2 95 0 0
> 0 0 0 11749568 150112 2462464 0 0 0 0 615 1458 1
> 1 97 0 0
> 0 0 0 11749708 150112 2462464 0 0 0 0 488 1016 1
> 1 98 0 0
> 1 0 0 11749820 150128 2462464 0 0 0 296 478 1185 1
> 1 98 0 0
> 0 0 0 11749820 150128 2462480 0 0 0 0 477 1068 2
> 1 98 0 0
> 0 0 0 11749568 150128 2462464 0 0 0 8 480 1043 1
> 1 99 0 0
> 0 0 0 11749048 150144 2462464 0 0 0 244 693 1425 2
> 1 97 0 0
>
>
> >
> > And if it is the most likely memory usage, rebooting the kernel would
> > not fix anything as memory consumption is mostly a userspace problem.
>
> Also, the mouse chasing the pop up menues has nothing
> to do with the file system.
>
>
> I am at a loss. If it was a hardware issue, a reboot would not fix it.
>
> And my almost identical shop computer does not do this.
>
>
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3 years, 6 months
