DevHeads.net

Postings by Mark LaPierre

OT Hardware Forum

Hey Y'all,

Is there a forum where I can discuss hardware and CentOS 7? I'm
considering building a new desktop system specifically designed for
CentOS 7 and the Folding At Home project.

This mail list seams to be oriented toward CentOS software issues not
hardware discussions.

Thunderbird Regression

Has anyone else noticed a 10X slowing of the time it takes Thunderbird
to load an email that contains graphics on CentOS 6? The last
Thunderbird update moved us from Thunderbird 45 to Thunderbird 52.

While Thunderbird was loading the images the hard drive was busy
cranking out seeks. I have all my local home accounts mounted on a
software raid.

I solved the problem with a downgrade to Thunderbird 45, but that's a
poor solution not keeping Thunderbird up to date with the latest
security patches.

Missing Dependency python-yubico

Hey all, I'm trying to install the fedora-packager group so that I can
build Fedora source packages into RPMs that I can install. I'm getting
this error:

Error: Package: fedora-packager-0.6.0.1-1.el6.noarch (epel)
Requires: python-yubico
<SNIP>
[root@peach ~]# yum install python-yubico
<SNIP>
No package python-yubico available.

Do you suppose that maybe this is a typo where python-yubico was typed
instead of python-yubikey? When I google for python-yubico Google
suggests python-yubikey instead. But maybe not!

xdgurl

Has anyone figured out how to make Firefox 45.4.0 on CentOS 6 use xdgurl
to handle xdg:// URLs?

Google is full of suggestions that don't work. When I select a an
xdg:// link I don't get a dialog asking me what to do like Google says I
will. Instead I get a message that says Firefox doesn't have a clue how
to handle this URL. Do you want to try again?

I tried about:config

I added:

network.protocol-handler.external.xdg user set string /usr/bin/zdgurl

Still no joy.

No Sound On Centos 7 VM

Hey All,

I've installed CentOS 7 in a KVM powered VM on my CentOS 6 desktop. I'm
not getting any sound.

Google seams to have no clue what to do. How about you?

Alternative GUI

Hey All,

I'm considering moving from CentOS 6 to CentOS 7. I'm not interested in
dealing with Gnome 3. I've heard good things about Mate, a fork of
Gnome 2. it appears that Mate is available in the EPEL repository
associated with CentOS 7.

Have any of you tried Mate on CentOS 7? In your experienced opinion
what would I be giving up by abandoning Gnome 3 and installing Mate instead?

HP CP2025

[mlapier@peach ~]$ rpm -qa | grep hplip
hplip-common-3.14.6-3.el6.x86_64
hplip-libs-3.14.6-3.el6.x86_64
[mlapier@peach ~]$ rpm -qa | grep cups
cups-1.4.2-74.el6.x86_64
cups-pk-helper-0.0.4-13.el6.x86_64
gutenprint-cups-5.2.5-2.el6.x86_64
cups-libs-1.4.2-74.el6.x86_64
cups-libs-1.4.2-74.el6.i686
[mlapier@peach ~]$

CentOS release 6.8 (Final)

I've been able to print to this printer with no issues, until this
evening. When I tried to send a print job the job just sat in the print
queue.

Use USB2.0 Camera with KVM based VM

Hey All,

I've been googleing this issue for hours but I can't find a workable
solution. I found a reply to a bug posting that said the USB hub on the
VM defaults to USB 1.1. I see this is true when I lsusb on the CentOS 7
guest.

The reply to the bug post went on to say that the problem is that the
USB 2.0 camera will not work with the USB 1.1 default hub and that I
should change the hub from USB 1.1 to USB 2.0.

I see no way to do that.

Can anyone shed some light on this?

Install C7 VM on C6 Host

Hey all,

Before I waste myself a bunch of time trying the impossible I figured I
would ask if I can install an instance of C7 in a KVM based VM on a C6 host.

Folding At Home

Hey Y'all,

I have the Stanford University Folding At Home project running on three
of my machines. I had them all set up so that I could control them all
from my main machine, 192.168.15.101, but some time ago something
changed so that I can no longer connect to the FAH clients on the other
two machines. I figured it wasn't really important so I would look into
it later. Well time has passed and my Christmas break is almost passed
too to I guess this is the time to figure it out.

I can still SSH onto both machines.

Host does not respond to nmap

Hey Y'all,

I just set up a new old machine on my network. I did a net install of
CentOS 6.7 on it replacing an outdated copy of Win XP.

Skype Issue

Hey Y'all,

Seems my Skype installation has stopped working.

I have skype-4.3.0.37-2.el6.i686.rpm from the Nux repo.

[mlapier@peach ~]$ skype %U
(<unknown>:27070): Gtk-WARNING **: Unable to locate theme engine in
module_path: "clearlooks",
Gtk-Message: Failed to load module "canberra-gtk-module"
Gtk-Message: Failed to load module "pk-gtk-module"

I checked the yum log.

KVM Mail List?

Hey All,

Is there a mail list dedicated to KVM questions? If there is I would
like to avoid polluting this mail list with a bunch of KVM performance
questions that should be posted elsewhere.

Resize KVM NTFS file system

Hey all,

I resized a partition inside a KVM RAW file system disk image. When I
start the Win7 virtual machine it does not report the new partition
size. It shows the file system as 15GB instead of the 50GB size of the
partition that it lives on. I gather from hours so reading the manual
that I need to increase the NTFS file system size to fill the new larger
partition where it lives.

The ntfresize command does not seem to be compatible with disk image
files.

google-earth crashes on CentOS 6.6

Hey all,

With google-earth-stable.x86_64 0:7.1.2.2041-0

[mlapier@peach /]$ /usr/bin/google-earth
[0425/000212:ERROR:net_util.cc(2195)] Not implemented reached in bool
net::HaveOnlyLoopbackAddresses()
Failed to load "/opt/google/earth/free/libinput_plugin.so" because
"/usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.14' not found (required
by ./libLeap.so)"
[0425/000213:ERROR:nss_ocsp.cc(581)] No URLRequestContext for OCSP handler.
[0425/000213:ERROR:nss_ocsp.cc(581)] No URLRequestContext for OCSP handler.
<SNIP>
Another crash happened while handling crash!
[mlapier@peach /]$

NOTE: google-ear

Preferred partition type for raid 5

Hey All,

I my research I came across a note that a specific partition type was
preferable when creating a raid 5 array. I installed my HDs and used
mdadm to assemble them into a raid 5 array. I then partitioned the
array using gdisk. The default partition type is "8300 Linux
filesystem" for the two partitions that I created.

The article I read said that a specific partition type was preferred to
avoid issues if the array was to be moved to another machine. Now I
can't find where I read that.

What is the preferred partition type that I should use for my partitions?

Slow Printing HP-2025dn

Hey All,

You know how sometimes you have a problem but you just live with it?
Well I've got one of those problems. I have an HP-2025dn printer
connected to my home network.

Googletalk Plugin on CentOS 6.6 x86-64 help

Hey All,

[root@peach RPM_REPO]# yum install google-talkplugin_current_x86_64.rpm
Loaded plugins: fastestmirror, refresh-packagekit, security
Setting up Install Process
Examining google-talkplugin_current_x86_64.rpm:
google-talkplugin-5.40.2.0-1.x86_64
Marking google-talkplugin_current_x86_64.rpm to be installed
Loading mirror speeds from cached hostfile
* base: centos.mbni.med.umich.edu
* epel: archive.linux.duke.edu
* extras: mirror.trouble-free.net
* updates: mirror.lug.udel.edu
Resolving Dependencies
--> Running transaction check
---> Package google-talkplugin.x86_64 0:5.40.2.0-1 will

7-Zip for CentOS X86-64

Hey Y'all,

I'm looking at ZCad:
<a href="http://sourceforge.net/projects/zcad/?source=directory" title="http://sourceforge.net/projects/zcad/?source=directory">http://sourceforge.net/projects/zcad/?source=directory</a>

It looks like the kind of 3D CAD package that I've been looking for. It
says that it works on Linux but it's zipped with 7-Zip which doesn't
seem to be available for CentOS.

Does anyone know if ZCAD or 7-Zip is packaged for CentOS X86-64
somewhere out there?

scp -rp behavior

Hey all,

I'm trying to copy configuration files from my old CentOS 6.6 32 bit
machine to my new CentOS 6.6 64 bit machine.

On my 32 bit machine:

[mlapier@mushroom ~]$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:19:DB:E5:4E:9F
inet addr:192.168.15.105

When I issue this command on my new 64 bit machine, 192.168.15.101:

scp -pr ... at 192 dot 168.15.105: /home/mlapier/.thunderbird
/home/mlapier/.thunderbird

It copies all directories and files in 192.168.15.105: /home/mlapier/ to
192.168.15.101: /home/mlapier.

How to search the mail archive

Hey All,

I've seen references to searching the mail archive. How exactly does
one perform such a search?

Let's say I want to search the mail archive for references to the scp
command. How do I do that?

scp -rp behavior

Hey all,

I'm trying to copy configuration files from my old CentOS 6.6 32 bit
machine to my new CentOS 6.6 64 bit machine.

On my 32 bit machine:

[mlapier@mushroom ~]$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:19:DB:E5:4E:9F
inet addr:192.168.15.105

When I issue this command on my new 64 bit machine, 192.168.15.101:

scp -pr ... at 192 dot 168.15.105: /home/mlapier/.thunderbird
/home/mlapier/.thunderbird

It copies all directories and files in 192.168.15.105: /home/mlapier/ to
192.168.15.101: /home/mlapier.

Re: [CentOS] Rhythmbox Replacement

Hey Y'all,

I though I would resurrect a long dead mail chain.

I'm looking for a good replacement for Rhythmbox. I need a pod catcher
to catch podcasts and download them to my HD where I can then move them
onto my mp3 player that I take to work every day.

I don't need a new mp3 player so don't suggest VLC. It is not able to
download podcasts.

I'm in the process of provisioning my new CentOS 6.6 x86_64 machine.

Do I need these?

Hey Y'all,

I got a package update notice this evening for package augeas-libs.

Nvidia Mod Update

Hey all,

On my X86-64 CentOS 6.6 machine I just ran yum update. In the update
was an upgrade from the 340.XX Nvidia package to the 346.XX package.
Hrmmm? I'm thinking this is not a good idea but, since this is just a
test system any way, I let it run. Sure enough I was right. Dmesg says
that my video is supported by the 340.XX driver, not the 346.XX driver.
It's not happy cause it can't find a supported GPU.

1. So, having only a command line interface, how do I tell yum to rip
out the 346.XX package and reinstall the 340.XX package?

2.

How To Record Sound Being Played

Hey all,

I've installed MuseScore on my C6.6 machine. MuseScore is able to
generate a midi sounding playback through the speakers of the active
score. I want to capture that sound directly to a file without using a
microphone. I want to send individual sound files to each of the
members of my quartet with their part only.

Does anyone know how I can capture sound directly to a file? Is there
an app for that? ;-)

Documentation link on new Firefox CentOS 7 splash screen

Hey All,

I just installed the newest version of Firefox that was pushed to
production today. When I started Firefox the CentOS 7 Is Here splash
screen was displayed. Out of curiosity I clicked on the [Documentation]
tab at the top of the screen and got this:

<a href="http://www.centos.org/docs/" title="http://www.centos.org/docs/">http://www.centos.org/docs/</a>

Does anyone else see a problem here?

System Hangs At Anaconda Detecting Hardware

Hey All,

I just assembled a new machine.

Mother Board: Gigabyte 78LMT-USB3
Processor: AMD FX8350
Memory: Corsair CMZ16GX3M2A1600C10 2x8 GB
Video: BFG Tech Nvidia GeForce 9600 GT

I tried the 6.6 x86_64 netinstall disk.
I tried the 6.6 x86_64 install DVD

Both fail at the same place:

Anaconda installer init version 13.21.229 starting
mounting /proc filesystem... done
creating /dev filesystem... done
starting udev...udev[175]: error setting /sys/class/firmware/timeout: No
such file or directory
done

mounting /dev/pts (unix98 pty) filesystem... done
mouning /sys filesystem...

What's up with Firefox/Thundrebird

Hey All,

Has anyone had trouble with Firefox/Thunderbird?

When I log on if I start Thunderbird first then I can't start Firefox.
Clicking on a link in an email fails to start Firefox.

If I start Firefox before Thunderbird then hyperlinks in emails open a
page in the existing Firefox instance.

Other users on this same machine are having the same problems.

This has been happening for that last several days.

CentOS release 6.6 (Final)

Linux mushroom.patch 2.6.32-504.1.3.el6.i686 #1 SMP Tue Nov 11 16:30:09
UTC 2014 i686 i686 i386 GNU/Linux

Thunderbird 31.2.0
Firefox 31.2.0

No sound hardware detected for other users

Hey Y'all,

This morning my wife complained that she had no sound when she was
logged on to my machine. I logged on to her account and brought up
System/Preferences/Sound to see if she had inadvertently selected some
other sound output device. Hey, it happens. There was no sound
hardware detected. I have a USB microphone and an integrated on board
sound card.