Postings by fred smith

Using GIMP on Centos-7, problem

Wondering if anyone here has ever tried installing this

<a href="" title=""></a>

as a gimp plugin in Centos-7, with gimp 2.8.16??

I find the installation instructions (for the binary tarball) are
minimal and whatever I do, it doesn't seem to appear in the gimp
menus, as it should.

I've used an older version (0.14) from years ago in older versions
of gimp, but how does one make this newer one work on C7?

I also tried building the source, but even "autoconfig" spewed some
errors that are greek to me, so I, for the moment, gave up on that.

Advice will be appreciated, thanks

I found this interesting: amount of evil traffic on the internet

I've just done a little "study" (well, nothing quite that pretentious)
of the traffic hitting my router, that gets DROPped the router's
firewall. there is a surprisingly (to me, at least) enormous amount of
it. over about the last 3 weeks, it has dropped over 65,000 connection

I finally got around to figuring out how to have the router's logging
mechanism connect to the rsyslog on my Centos workstation, so I can
collect a large body of log entries to review.

looking for graphing tools


I have bazillions of incoming (rejected) attempts to connect to my
SMTP server, and I'm interested in separating out those that seem
to come in huge bunches (e.g., the one from yesterday that ran for
about 10 hours and sent over 4100 attempts), and graphing them so
I can see the spacing and/or distribution in time.

I can figure out some simple scripting to turn the maillog entries
into times since the epoch, or other formats, if needed, but I have
no experience with the various graphing tools availabe, or even
what (or where) they are.

I'd appreciate pointers-and-or-advice, should any o

using autofs on C-7

Hi all!

I'm trying to set up autofs on my C7 netbook so I can automount a cifs
share (actually two) from my NAS box, and because when I'm not at home
I don't want it attempting to mount it.

so I've read several howtos on it, including the one on the CentOS Wiki.
but what I've got isn't working right, and I don't know why.

I'm trying to follow the "even-better method", but am finding I don't
understand the syntax of entries, so I'm flailing around trying different

so, here's what I have now:

in /etc/auto.master:

/mnt/syno-fredex /etc/auto.syno-fredex

I added /etc/auto.syno-fredex

plymouth themes problem

Hi all!

I was playing with plymouth themes on a c7 box. I found a page on
redhat, in their rhel7 documentation that describes how to change to
a different plymouth screen:

plymouth-set-default-theme --list
to find out what themes are installed.

then I installed the remaining bunch the yum had available.

so then installing one by doing

plymouth-set-default-theme <theme name>
dracut -f

as documented on the aforementioned page, followed by a reboot
produces NO plymouth splash screen.

nameserver issue

Hi all!

This question is, at best, somewhat peripheral to Centos, but I'm
hoping to be forgiven, and that someone here can give me a clue.

I've just brought up a nameserver on my household LAN, bind9 on a
Raspberry Pi.

The connection with Centos is this: my main desktop is C7, and its
hardwired network is also manual, not dhcp. I've edited the ipv4 config
(in NM) and changed the DNS settings from (the router) to (the RPi). I've also manually tweaked /etc/resolv.conf
to contain instead of

works fine. until I fire up a vpn.

SYSCALL problem in C7

Hi all!

I know this isn't a devel list, but thought someone here may have a clue
I could use...

I have a fairly big application that runs on Centos 7 (and 6 and 5).

Sometimes (not often, but too often) when running under the ddd debugger,
while sitting stopped at a breakpoint, it will suddenly spew an apparent
segfault in, as it says at the top of the source file, "Assembly code
template for system call stubs".

The specific place always looks like this:


the red error marker points to S

frozen bubble for C7

Hi all!

I'm looking for a frozen-bubble that works on C7.

I've tried installing the one in the Nux C7 archive, and the
installation dies with:

Error: Package: frozen-bubble-2.2.1-0.10.beta1.el7.nux.x86_64 (nux-dextop)
Requires: perl(Compress::Bzip2)

Can't find perl(compress::bzip2) anywhere.

thansk in advance!


another SMTP auth question

My ISP has just informed me that we will soon be required to authenticate
when connecting to their smtp server, so I've been looking around on the
web for how to do that with sendmail (just using auth when connecting
outward-bound, nothing else).

I've found a page here: <a href="" title=""></a>
that explains it simply (for simple minds, like mine) but it appears
to be old-ish.

So, I'm wondering if the recommendation of using:


is still appropriate, since MD5 is known to be breakable.

mdadm vs raidcheck

Hi all!

I don't religiously follow everything that pops up in the selinux
alerts, but now and then I go back and look at some of them.
(I'm on an up to date Centos-7).

Today I noted an error that seems to occur during a weekly raid check,
from /etc/cron.d.

the selinux alert is:

SELinux is preventing /usr/sbin/mdadm from write access on the file /var/log/rear/rear-fcshome.log.lockless.

so I go look at that file and find that it contains, down in the middle
of commands run, a series of errors:

2017-02-19 01:30:03 Relax-and-Recover 1.17.2 / Git
2017-02-19 01:30:03 Command line options: /u

firefox/flash/CNN issue in Centos-7

Hi all!

I have 3 up to date C7 systems.

One of them has flash installed, the other two do not.

One of the two without flash displays CNN videos fine. I'm not sure
whether it is using html5/canvas, or some other mechanism.

the other system without flash fails to display them because flash
is missing.

So far I have not been able to figure out what is different in the
two systems' firefox configuration.

networkmanager VS OpenConnect VPN

I have a VPN connection using the openconnect vpn, and it is managed by network manager. Works fine.

It has been on my system since the original Centos 7.x release.

Now that I have Centos 7.3, while it still works fine, I find that
I can no longer add a new connection using openconnect.

7.3 and USB headphones

Hi all!

I wish to give huge thankyous to KB and all the others who worked
to get 7.3 out the door. Many thanks!

I have some good things and some bad. A good thing is that unlike
previous versions, when I plug in my USB headphones they are automatically
recognized and I get sound without having to change anything! (which is
a huge win from before when I had to mess with settings, sometimes for
a few minutes, to get headphone sound and microphone audio.)

The not so good thing is that I don't have any working volume
control for that sound.

odd sendmail question

I've looked thru all the stuff at (or whatever its name
is now, they seem to have gone corporate...) and don't see anything
relating to this:

I get a series of log entries in /var/log/maillog, once or twice a day
at various times--not 12 or 24 hours apart. not always the identical
series either.

Sound problem, possibly Mate Volume Control

Hi all!

In the last day or two (on Centos 7)the speaker icon in the Mate top
panel, which normally drops down to a volume control, has stopped working.

what does "stopped working" mean?

It means when I drop down the volume slider and slide it, it makes no
difference at all in the output volume.

if I right-click that icon, it'll open up "Sound Preferences", which
appears to be the same as "Mate Volume Control".

hacking grub to control number of retained kernels.

I've recently had this problem on two C7 systems, wherein when doing "yum
update", I get a warning about /boot being low on space.

both systems were installed using the partition size recommended by
Anaconda, right now "df -h" shows /boot as 494M, with 79M free.

I don't store unrelated crap on /boot, I assume that yum and/or grub
will manage it for me.

netbook screen suddenly goes black

Hi all!

I'm running an up to date Centos-7 on my Acer Aspire One netbook. have
been for, well, ever since C7 was released.

Just had an event today that also happened 2 or 3 times with earlier
systems installed, but I never pursued it.

What happens is that suddenly while working away on the desktop the
display suddenly goes black... not black as in turned off, I can see
that the backlight is still on, but no image is displayed.

Nothing I can do fixes it except a reboot. I've tried CTRL-ALT-BKSP,
CTRL-ALT-DEL, alt+printscreen+r+e+i+s+u+b.

enlarging partition and its filesystem

Hi all!

I've got a VM at work running C6 on HyperV (no, its not my fault,
that's what the company uses. I'd rather gag myself than own one
of th ose things.)

I ran out of disk space in the VM, so the admin enlarged the virtual disk.
but now I realize I don't know how to enlarge the partition and its

I'll be googling, but in case I miss it, it'd be great if someone could
point me in the right direction.



Sound input on C7

Hi all!

I've just spent a frustrating hour trying to get audio to come out
of the speakers, where the input is via a cable from the headphone
jack of my Sansa Sandisk player.

I'm usin the Mate desktop (yes, I know, centos doesn't support it, so
this may more properly be a question for EPEL...) and the Mate Volume
control Applet.

I've got it configured to use the front panel mic input (perhaps I
need the line input on the back panel??) but I can't find any combination
of settings that sends the audio out my speakers.

for input I've chosen "Built-in Audio Analog Stereo), and as music plays

firewalld question

Hi all!

I'n wondering if it is possible to have Centos-7 automatically change
firewall zones, depending on the network we conect to.

my default zone is "home" and it has some ports open that probably
shouldn't be open when I'm on someone elose's network.

so I'm thinking that if there's a way to have it always use home when
I'm at home, and external when I'm not, it would be great.

I see that firewall-cmd has a ton of options, but not sure which one(s)
I'd need for switching.

Openshot 2.x (beta) on C7??

I'm interested in trying out the new OpenShot beta (2.06) on CentOS 7.
Openshot requires Python3.

so I look at available packages where I find a bunchof python3 packages
as well as python34 packages.

I'm assuming that python34 is version 3.4 of python, while python3 is some
other 3.x version.

Can anyone here explain to me what are the differences, any compatibility
across these versions, and how to tell which I need for OpenShot?

Thanks in adva ce!


Balsa problem

Wondering if anyone here has built Balsa for Centos-7.

I've used it on Centos 5 and 6 for years, though I had to compile
it myself.

It compiles cleanly on c7, but when run I keep getting error messages
that say "Failure to sync mailbox xxxx" that seem to happen when I try
to view a mailbox that has new/unread mail, or perhaps it happens when
a mailbox receives new mail whilei Balsa is open, not certain which.

I can't find anything in the Balsa mailing list(s) that helps, and
Google isn't my friend in searching for any help on this.

Anybody got any thoughts?

MATE question

I know I should go to EPEL with this, but thought to ask here in case
anyone else uses Mate and may know more about it than I do.

I had installed the MATE 1.12 packages from epel testing a few days ago,
but since that did not include some of the devel packages, I just removed
it and reinstalled all the MATE 1.10 packages from epel-7.

they all installed fine, but now my desktop has a background, and top
and bottom panels and nothing else. right-click on the desktop produces
no context menu.

Anyone know what I've missed (or messed) ?


what browser plugin provides Quicktime on 7.2?

Several of the plugins I used on C6 no longer seem to be available,
so I can't figure out what to use for Quicktime (

Advice appreciated!


weird usb/sound problem on C7

I'm running C7, fully up to date. I'm also running the MATE desktop (from
epel) though the original installation was Gnome.

a couple weeks ago my USB headset worked as both earphones and mic.

today when I plug it in I get nothing. right-clicking on the speaker
icon in the upper panel I can choose "sound preferences" (as an aside,
how can I figure out what program that actually is? it has no help or
about option) and in the "Hardware" tab it shows several devices.

Calibre installation fails on C7

Attempting to install latest Calibre on Centos-7, getting:

2015-12-22 21:32:38 URL: [25887/25887] -> "-" [1]
Installing to /home/fredex/calibre-bin/calibre
Downloading tarball signature securely...
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "<string>", line 670, in main
File "<string>", line 655, in run_installer
File "<string>", line 627, in download_and_extract
File "<string>", line 619, in get_tarball_info
File "<string>", line 578, in get_https_resource_securel

playing DVDs on C7

Hi all!

I'm trying to finish setting up my newly upgraded C7 system.

It's on the same hardware I ran C6 on for several years. on C6 I had no
trouble playing DVDs (after installing tons of packages and libdvdcss).

Well, on C7, I've got totem (videos) and all its plugins I can find
via yum, VLC (from nux) all the gstreamer and gstreamer1 packages I
can find, everything with "dvd" in its name, including libdvdcss from

vlc will kinda play movies, i.e., moving garbage appears on the screen,
sometimes it'll resemble something from the movie, but most of the time
not so much.

getting Google Earth to work.

is a continual pain.

I'm attempting to follow the instructions here:
<a href=";postcount=27" title=";postcount=27">;postcount=27</a>

(yes, I know it's a fedora forum (but the same stupid mistake persists
in the GE packages) but apparently the rpmrebuild binary is nolonger
available, at least not in Centos (specifically, CentOS-7.2.1511).
As I know little about all the various rpm tools, I don't know how to
do what is described there without rpmrebuild.

rpmbuild --rebuild seems to ONLY build from a source archive, so it
doesn't seem to do what I need.

Advice appreciated!

thanks in advanc

no longer goes to standby when lid is closed

since I got the big bolus of updates from the CR repo a few days ago my
netbook (AcerAspire One D255E) will no longer go to standby when the
lid is closed.

This was a Gnome desktopp installation with theh MATE desktop fromm

I've verified that the correct setting still exists in power manager
but it persists in continuing to run when the lid closes.

it WILL go to standby if explicitly told to do so from the shutdown

Has anyone else seen anything like this?



Centos-7: odd yum output

Hi all!

On 7.1 + CR updates, running "yum list installed | grep -y totem" gives this:

yum list installed | grep -y totem
totem.x86_64 1:3.14.3-5.el7 @cr
totem-nautilus.x86_64 1:3.14.3-5.el7 @cr
totem-pl-parser.x86_64 3.10.5-1.el7 @cr

and "yum list installed | grep -y totem" gives this:

yum list available | grep -y totem
gnome-python2-totem.x86_64 2.32.0-20.el7.nux nux-dextop
totem-devel.x86_64 1:3.14.3-5.el7