Discuss May 2016

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155 participants
149 discussions

ipmitool and CentOS 7
by m.roth＠5-cent.us 17 May '16

17 May '16

On Dells running CentOS 6, we could use this command ipmitool delloem lcd set mode userdefined "$(uname -n | sed -e 's/\..*//' )" to set the little LCD screen to display the system name, In the latest sevens, it fails, and gives me usage for the command... which displays exactly that syntax. Anyone have a clue? mark

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devtoolset-4
by Jarosław Bober 17 May '16

17 May '16

Hello, my name is Jarek I am new here. I need some clarifications on how to distribute an app developed with devtoolset-4 enabled. I am developing a distributed app in c++ I wanted to upgrade toolchain to use new standard. Is it true that when I compile on centos 6.x with devtoolset enabled then I will be able to run this app on centos 7.x as well? Do I have to install devtoolset on all my machines that I want to run this app? Or would it use built-in libstdc++ library, linking statically only the missing parts? This confuses me a bit. Regards, -Jarek

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C7 Desktop background
by Rob Kampen 17 May '16

17 May '16

Hi Just stumbled into a problem with my recent new build C7 work station. Fully updated, gnome desktop, all was working well until I had a play with Tweak Tool, I wanted to try some other themes for window layouts as the default seems to not show check boxes correctly in all situations. I haven't yet determined what is causing this but suspected another theme may work better, as not being able to see the correct status of a check box is somewhat frustrating. So I made and tried numerous changes with this Tweak Tool, but only used the items that were installed as default installed select options, no special import of any other themes or extensions. At one point I lost the Desktop background - cannot recall which change triggered this, however as I have tried all the other options on just about every tab, I still have a gray desktop. If I move the cursor to the top left corner and it shows all the open windows, the desktop wallpaper / background shows just fine, but when I select any window/app, my desktop reverts to gray. I have tried resetting the desktop background but it does not remove this aberration. Any gnome gurus out there that can point me to the gnome foo required to get my desktop looking 21st century and not like my old monochrome Windows386 circa late 1980's. Thanks Rob

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Black screen after install / Centos 7.2
by Oliver Zemann 16 May '16

16 May '16

Hi, i just installed CentOS 7.2 on my little "server" but i get a black screen during boot. It is a Asrock Am1h-itx mainboard with an AMD 5350 CPU (onboard graphic). I created a raid 6 but i dont think thats the problem, as the boot process goes pretty far. I would even say its going until X should start, but it is a server install, so i guess there is no X. Can someone tell me what could i do to get more information? Is there some kind of nomodeset param available for the grub cmd line param which i could try? Thanks

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CentOS-announce Digest, Vol 135, Issue 8
by centos-announce-request＠centos.org 16 May '16

16 May '16

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit https://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CESA-2016:1041 Important CentOS 5 thunderbird Security Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Sun, 15 May 2016 15:53:30 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2016:1041 Important CentOS 5 thunderbird Security Update Message-ID: <20160515155330.GA9279(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2016:1041 Important Upstream details at : https://rhn.redhat.com/errata/RHSA-2016-1041.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 13025140c4dd7909081f051c3acb3ac182ab7581a127dbad91195e4d39d200b2 thunderbird-38.8.0-1.el5.centos.i386.rpm x86_64: c45cdb331104bcd47f8aa26169585e8df65845ea3885aa86200ee94c12de5552 thunderbird-38.8.0-1.el5.centos.x86_64.rpm Source: 5c0f7e72c279d00bf8d7de78ebec7d8b9ee704c87dbad8885d78efdff8e550cf thunderbird-38.8.0-1.el5.centos.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: JohnnyCentOS ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org https://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 135, Issue 8 ***********************************************

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Black screen after boot on CentOS 7.2
by Oliver Zemann 16 May '16

16 May '16

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16 May '16

Kernel parameters aside (console=ttyUSB0 console=tty0), I am trying to get a login console working on a USB-to-serial adapter. systemctl enable serial-getty(a)ttyUSB0.service systemctl start serial-getty(a)ttyUSB0.service This works without issue on Debian 8. However when running the same on CentOS 7, my logs are filled with: May 16 12:44:58 localhost.localdomain systemd[1]: Starting Serial Getty on ttyUSB0... May 16 12:44:58 localhost.localdomain agetty[1842]: /dev/ttyUSB0: cannot open as standard input: Permission denied May 16 12:45:08 localhost.localdomain systemd[1]: serial-getty(a)ttyUSB0.service holdoff time over, scheduling restart. May 16 12:45:08 localhost.localdomain systemd[1]: Started Serial Getty on ttyUSB0. May 16 12:45:08 localhost.localdomain systemd[1]: Starting Serial Getty on ttyUSB0... May 16 12:45:08 localhost.localdomain agetty[1845]: /dev/ttyUSB0: cannot open as standard input: Permission denied May 16 12:45:18 localhost.localdomain systemd[1]: serial-getty(a)ttyUSB0.service holdoff time over, scheduling restart. May 16 12:45:18 localhost.localdomain systemd[1]: Started Serial Getty on ttyUSB0. May 16 12:45:18 localhost.localdomain systemd[1]: Starting Serial Getty on ttyUSB0... May 16 12:45:18 localhost.localdomain agetty[1850]: /dev/ttyUSB0: cannot open as standard input: Permission denied May 16 12:45:29 localhost.localdomain systemd[1]: serial-getty(a)ttyUSB0.service holdoff time over, scheduling restart. May 16 12:45:29 localhost.localdomain systemd[1]: Started Serial Getty on ttyUSB0. May 16 12:45:29 localhost.localdomain systemd[1]: Starting Serial Getty on ttyUSB0... May 16 12:45:29 localhost.localdomain agetty[1853]: /dev/ttyUSB0: cannot open as standard input: Permission denied May 16 12:45:39 localhost.localdomain systemd[1]: serial-getty(a)ttyUSB0.service holdoff time over, scheduling restart. May 16 12:45:39 localhost.localdomain systemd[1]: Started Serial Getty on ttyUSB0. I thought this might be a permissions issue. But comparing the permission on the debian box to the centos box yeilds the same results. When no one is logged in on the serial line on both machines, the permissions on the device node are as follows: crw--w----. 1 root tty 188, 0 May 16 13:49 /dev/ttyUSB0 (root:tty 0640) Any ideas as to what is blocking the serial login on the CentOS 7 box?

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How to disable audio in CentOS7?
by Steve Snyder 15 May '16

15 May '16

How can I completely disable audio drivers and services in my CentOS7 system? This system is a server that will never run any audio applications. The problem is, I can't disable the audio device in my BIOS, so the system finds it in the PCI device list and configures it on each boot. Yes, I know I can blacklist specific device driver modules, but I've got a minimum of 11 audio-related kernel modules loaded on a default C7 configuration, and untold dbus baggage to go with them So.. what can I do to have CentOS7 completely ignore the audio hardware it finds? Thanks.

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C6: Gparted "the kernel failed to re-read partition table"
by Always Learning 14 May '16

14 May '16

On C6 (latest) I wanted to add an extra partition, number 14, to a 1TB GPT disk. It failed repeatedly. The error message is:- ~~~~~~~ GParted 0.19.1 Libparted 2.1 Create Primary Partition #1 (ext4, 33.00 MiB) on /dev/sda 00:00:01 ( ERROR ) calibrate New Partition #1 00:00:00 ( SUCCESS ) path: /dev/sda-1 start: 613591359 end: 1953525134 size: 1339933776 (638.93 GiB) create empty partition 00:00:01 ( ERROR ) libparted messages ( INFO ) WARNING: the kernel failed to re-read the partition table on /dev/sda (Device or resource busy). As a result, it may not reflect all of your changes until after reboot. WARNING: the kernel failed to re-read the partition table on /dev/sda (Device or resource busy). As a result, it may not reflect all of your changes until after reboot. ~~~~~~~ Does C6's version of Gparted work with GPT disks ? Thanks. -- Regards, Paul. England, EU. England's place is in the European Union.

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Sound input on C7
by Fred Smith 14 May '16

14 May '16

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 on the player the input level meter shows stuff happening. for output I've also chosen "Built-in Audio Analog Stereo), and Connector offers only two choices: Headphones and Line Out, neither of which causes audio to go to the speakers. when I plug in my USB headphones and configure them for output (I use them quite a bit, so I know how to set it up) I still don't get the audio from my player. Clues/Advice appreciated. thanks! Fred -- ---- Fred Smith -- fredex(a)fcshome.stoneham.ma.us ----------------------------- "Not everyone who says to me, 'Lord, Lord,' will enter the kingdom of heaven, but only he who does the will of my Father who is in heaven." ------------------------------ Matthew 7:21 (niv) -----------------------------

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Discuss May 2016