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Dual NVidia cards, dual monitors
by Steven Chall 04 Jun '12

04 Jun '12

I've just installed CentOS 6.2 on an HP xw8600 with two NVidia GeForce 8800 GT video cards in it. I have two Dell monitors than ran configured as a single contiguous desktop when this was a Windows 7 machine. I've only been able to access one of the two monitors under CentOS, although the system demonstrates some awareness of the second GPU/monitor, because the second monitor shows the standard CentOS 6 image while the machine is running. In addition, when it's starting up or shutting down a large wait cursor is displayed in that second monitor, and also shows the message "shutting down..." when that's going on. However, the Display applet in the System | Preferences panel menu shows only the one monitor, and hitting the Detect Monitors button doesn't help. Just to test the obvious, I switched the DVI cables coming out of the two video cards and as you'd expect what shows in the two monitors is also switched. When I do an lspci at the command line I see at the bottom of the listing: 60:00.0 VGA compatible controller: nVidia Corporation G92 [GeForce 8800 GT] (rev a2) 80:00.0 VGA compatible controller: nVidia Corporation G92 [GeForce 8800 GT] (rev a2) And the output from xrandr is: Screen 0: minimum 320 x 200, current 2560 x 1600, maximum 8192 x 8192 DVI-I-3 connected 2560x1600+0+0 (normal left inverted right x axis y axis) 646mm x 406mm 2560x1600 59.9* 1280x800 59.9 DVI-I-4 disconnected (normal left inverted right x axis y axis) I've done some considerable googling, and haven't found any discussions that offer a solution for my situation (dual video cards). I did see the following from almost two years ago saying X Windows just doesn't support it: >From http://permalink.gmane.org/gmane.comp.freedesktop.libdlo/448, Bernie Thompson says (on October 13, 2010): <begin quote> On Wed, Oct 13, 2010 at 1:44 AM, Christoph Rissner <c.r@...<http://gmane.org/get-address.php?address=c.r%2dxV8MHogwf5Dk7%2b2FdBfRIA%40p…>> wrote: > I think I've read somewhere that even XRandR 1.3 isn't up to multi GPU > environments, so I guess Xinerama is the only option here. Yes, unfortunately that's the fundamental problem. http://superuser.com/questions/139818/ubuntu-10-04-not-detecting-multiple-m… I really only understand the low-level stuff (framebuffer driver), but here's my understanding ... The plumbing isn't there in X to support multiple graphics cards the way Windows has since Win 98. The main low-level features xorg needs are in the area of things like "GPU object" and "shatter" support to allow screens to be split across GPUs/framebuffers. Right now, with RandR hand-config, you can get multiple X screens [can't drag windows between them], one per-GPU, each of which can have multiple monitors connected if that particular GPU reports multiple outputs. With GPU object support, rendering could span GPUs and several GPUs could be merged into one X screen similar to the classical Xinerama setup. <end quote> So is this [still] the case? Is Xinerama a viable alternative? I'd also appreciate some help with the "RandR hand-config" that Bernie mentions. Thanks for any info you may be able to provide. -Steve Chall Senior Research Software Developer Renaissance Computing Institute (RENCI) Phone: 919-681-9639 Email: stevec(a)renci.org<mailto:stevec@renci.org>

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CentOS-announce Digest, Vol 88, Issue 1
by centos-announce-request＠centos.org 04 Jun '12

04 Jun '12

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit http://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. CEBA-2012:0704 CentOS 5 logrotate FASTTRACK Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Mon, 4 Jun 2012 10:57:01 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2012:0704 CentOS 5 logrotate FASTTRACK Update To: centos-announce(a)centos.org Message-ID: <20120604105701.GA6612(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2012:0704 Upstream details at : http://rhn.redhat.com/errata/RHBA-2012-0704.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 3636dffbf668ab9f4df199dbd39f7b9ea9afaab4181f0c1091c4e53a6cd65b91 logrotate-3.7.4-14.i386.rpm x86_64: 449b4d4a770318930cadf9c383bc7cde666956b992d022d77422b414fc89ea25 logrotate-3.7.4-14.x86_64.rpm Source: 886726b62013bf714e4f699c2bd74358001663a365e54e51084ecc4979a16668 logrotate-3.7.4-14.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org http://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 88, Issue 1 **********************************************

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Using UTF8 under mysql in Centos6
by C. L. Martinez 04 Jun '12

04 Jun '12

Hi all, I am trying to configure utf8 in mysql under centos6 to display special characters, like accents. I use this mysql instance to store plain syslog logs. I have configured this under my.cnf: [mysqld] init_connect = 'SET collation_connection = utf8_general_ci' init_connect = 'SET NAMES utf8' character-set-server = utf8 collation-server = utf8_general_ci [client] default-character-set = utf8 but it doesn't seems to work ... Any idea?? Thanks.

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nodejs based website
by Tim Dunphy 04 Jun '12

04 Jun '12

Hello, I am trying to setup a node.js based website called 'hummingbird'. It's a monitoring package that you can read about here: http://projects.nuttnet.net/hummingbird/ My question is when I hit the site all I see is a directory listing http://107.21.183.42/hummingbird/ Similar to what would happen if you went to a php site without php being configured in apache with the lines LoadModule php5_module modules/libphp5.so AddHandler php5-script .php I've never actually setup a node.js based site before and I was wondering if there might be something I was missing. I'd appreciate any advice you might have. Thanks Tim -- GPG me!! gpg --keyserver pool.sks-keyservers.net --recv-keys F186197B

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wins option in nsswitch.conf not working
by Peter Peltonen 03 Jun '12

03 Jun '12

I am trying to get BackupPC working with automount as documented in this CentOS HowTo: http://wiki.centos.org/HowTos/BackupPC I think my CentOS6 box's NetBIOS name resolving is not working correctly as when I try to access the mount for Win7 machine called Parallels I get this: [root@au ~]# ls /windows ls: cannot access /windows/parallels: No such file or directory parallels [root@au ~]# cd /windows/parallels -bash: cd: /windows/parallels: No such file or directory and I cannot ping the Win7 machine with its NetBIOS name: [root@au ~]# ping parallels ping: unknown host parallels If I add "wins" at the end of the hosts section in /etc/nsswitch.conf the resolver seems to get "stuck" as after ping it just hangs (there is no output, I have to quit it with CTRL+C) smbclient seems to work though: [root@au ~]# smbclient -L parallels -U Administrator Enter Administrator's password: Domain=[PARALLELS] OS=[Windows 7 Professional 7601 Service Pack 1] Server=[Windows 7 Professional 6.1] Sharename Type Comment --------- ---- ------- ADMIN$ Disk Remote Admin C$ Disk Default share IPC$ IPC Remote IPC test Disk Domain=[PARALLELS] OS=[Windows 7 Professional 7601 Service Pack 1] Server=[Windows 7 Professional 6.1] Server Comment --------- ------- Workgroup Master --------- ------- Why does the "wins" option not work in nsswitch.conf? What should I do to get automount working with CentOS + Win7 shares? Regards, Peter

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Upgrading FC2 to CentOS 5.* - anyone second this?
by Max Pyziur 03 Jun '12

03 Jun '12

Greetings, I *do* still have an FC2 box. Would anyone second this procedure: http://www.centos.org/modules/newbb/viewtopic.php?topic_id=14052&forum=37&p… Thanks. Max Pyziur pyz(a)brama.com

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xeyes kills freenx session
by Les Mikesell 02 Jun '12

02 Jun '12

I was trying an assortment of things to get a remote X session working (where I had forgotten to install the xauth package...) and noticed that running xeyes kills my freenx session. This happened whether in the NX/freenx session itself or when run on a remote machine via 'ssh -Y', started from a window in a freenx session. Is that a known problem or do I have something set up wrong? Other GUI programs that open their own windows seem to work, including jconsole which is what I really wanted to run in the first place. -- Les Mikesell lesmikesell(a)gmail.com

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Install 6.2 via wireless
by david 02 Jun '12

02 Jun '12

Folks I have a HP 8540w workstation, and just for kicks, I wanted to see if I could install Centos 6.2 using only the wireless connection, and the cd/dvd reader. I tried the "net-install" CD image, but it never found the wireless adaptor. How for up the chain must I go to succeed? Net-install (doesn-work) CD containing minimal DVD containing the full image? This effort was more than academic; one of my clients has a box that is connected only through wireless, and we need to do the install. Any advice you may have would be appreciated. David

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KVM with 6.2 i686 guest
by Jerry Geis 02 Jun '12

02 Jun '12

I just installed a KVM guest, centos 6.2 i686 (6.2 x86_64 host) and the network module is loaded . The modules is/are 8139too,8139cp is what lsmod shows. Dmesg shows link up but ifconfig does not give me an address? service network restart shows OK no errors but again no address. I set the ifcfg-eth0 file to not be NM controlled, onboot yes and rebooted. Same no address. I run 5.8 images all the time and they get the address? Did I forget something? Jerry

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problems installing parted tool
by Jane Wayne 01 Jun '12

01 Jun '12

i have downloaded the CentOS distribution that comes with Xen Cloud Platform (XCP) at http://www.xen.org/download/xcp/index.html. i am trying to install the parted utility. yum install parted however, i get the following message. Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile Setting up Install Process No package parted available. Nothing to do any ideas on what's going on? i have the following files: /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Media.repo /etc/yum.repos.d/Citrix.repo the CentOS-Base.repo has the following. [base] name=CentOS-$releasever - Base mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch… #baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5 exclude=kernel-xen*, *xen* enabled=0 #released updates [updates] name=CentOS-$releasever - Updates mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch… #baseurl=http://mirror.centos.org/centos/$releasever/updates/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5 exclude=kernel-xen*, *xen* enabled=0 #packages used/produced in the build but not released [addons] name=CentOS-$releasever - Addons mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch… #baseurl=http://mirror.centos.org/centos/$releasever/addons/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5 enabled=0 #additional packages that may be useful [extras] name=CentOS-$releasever - Extras mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch… #baseurl=http://mirror.centos.org/centos/$releasever/extras/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5 enabled=0 #additional packages that extend functionality of existing packages [centosplus] name=CentOS-$releasever - Plus mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch… #baseurl=http://mirror.centos.org/centos/$releasever/centosplus/$basearch/ gpgcheck=1 enabled=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5 #contrib - packages by Centos Users [contrib] name=CentOS-$releasever - Contrib mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch… #baseurl=http://mirror.centos.org/centos/$releasever/contrib/$basearch/ gpgcheck=1 enabled=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5 the CentOS-Media.repo has the following. [c5-media] name=CentOS-$releasever - Media baseurl=file:///media/CentOS/ file:///media/cdrom/ file:///media/cdrecorder/ gpgcheck=1 enabled=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5 the Citrix.repo has the following. [citrix] name=XCP 1.4.90 updates mirrorlist=http://updates.vmd.citrix.com/XCP/1.4.90/domain0/mirrorlist #baseurl=http://updates.vmd.citrix.com/XCP/1.4.90/domain0/ gpgcheck=1 gpgkey=http://updates.vmd.citrix.com/XCP/RPM-GPG-KEY-1.4.90 enabled=0

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