 www.centos.org Forum Index CentOS 6 - Software Support  Xnest on Centos 6
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Re: Xnest on Centos 6 | #14 |
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Regular Board Member
 
Joined: 2008/4/18
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I did a fresh install of CentOS 6.3 on ottar and renamed it to dell490. Xnest now works but it crashed so I use Xephyr instead. Xephyr hasn't crashed in the last 30 minutes.
One thing, with the old CentOS 5.8 software, the screens would flash NVIDIA everytime I logged in. With the new CentOS 6.3 software that doesn't happen. Oh and another thing, I have two screens and used the NVIDIA X Server Settings gui to configure them. The displays worked fine but I couldn't move the mouse from the right screen to the left but then I moved the cursor out past the edge of the right screen and it appeared on the left screen! In /etc/X11/org.conf I changed Screen 1 "Screen1" RighttOf "Screen0" to Screen 1 "Screen1" LeftOf "Screen0" |
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Posted on: 2012/7/28 17:56
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PBrimacombe
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Re: Xnest on Centos 6 | #13 |
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Joined: 2008/4/18
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I decided to use Xephyr instead of Xnest.
when I start it on onottar it blew up the same way as Xnest but I tried it in the reverse sense on onottar ssh genie -X and then from a terminal on genie Xephyr :1 -ac -once -query localhost -fullscreen this works, its slow and shaky when I move windows around, but it works |
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Posted on: 2012/3/30 18:02
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Re: Xnest on Centos 6 | #12 |
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Moderator
Joined: 2006/12/13
From Tidewater, Virginia, North America
Posts: 18773
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I don't have a CentOS-5 system with Nvidia to look at, nor one with dual cards. On CentOS-6 there's even less:
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_________________
Phil Recommended reading: FAQ & Readme first ; Search hint: google "your topic site:centos.org"; Smart Questions |
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Posted on: 2012/3/28 20:39
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Re: Xnest on Centos 6 | #11 |
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Regular Board Member
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I was looking around and maybe /etc/X11/xorg.conf doesn't have enough info?
Videocard1 is the same [Moderator edited to insert code tags, so preserving the format.] |
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Posted on: 2012/3/28 20:24
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Re: Xnest on Centos 6 | #10 |
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Moderator
Joined: 2006/12/13
From Tidewater, Virginia, North America
Posts: 18773
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That's much clearer. You may well be correct that the hardware on onottar as I can't reproduce your problem, and don't know what else to suggest. Perhaps with the clear problem statement someone else can offer something constructive.
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_________________
Phil Recommended reading: FAQ & Readme first ; Search hint: google "your topic site:centos.org"; Smart Questions |
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Posted on: 2012/3/28 20:20
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Re: Xnest on Centos 6 | #9 |
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thanks again Phil
Please describe concisely what functionality you need, what OS and hardware are on the system on which the display is to be shown, and what is and is not working. the machine on my desk is onottar, I just updated it to Centos 5.8, it has dual monitors, in xorg.conf they are configured as separate screens, the setup is working fine ftp.agr.gc.ca:/pub/outgoing/brimacp/xnest/basedata.na4949 describes onottar it has an nvidia graphics card and I have just updated the nvidia driver the other machine is genie, I installed Centos 6.2 on it ftp.agr.gc.ca:/pub/outgoing/brimacp/xnest/*.log are the log files from genie the functionality I need is to run the command Xnest -query genie from onottar sitting on my desk, I login to onottar, gnome comes up, everything's working fine I open a terminal window on onottar and enter Xnest -ac :1 & and I get an Xnest screen! it doesn't do anything but it is reliable then I enter Xnest -query genie.gis.agr.gc.ca -ac :1 & Xnest window briefly appears and then goes poof with a lot of scary messages the odd thing is that twice the command has worked and has allowed me to login to genie I suspect that the problem is related to the dual screens because from a third machine with only one screen I can start Xnest to genie |
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Posted on: 2012/3/28 19:39
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Re: Xnest on Centos 6 | #8 |
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Moderator
Joined: 2006/12/13
From Tidewater, Virginia, North America
Posts: 18773
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Sorry but I'm a bit lost here. You have mentioned a number of different systems, presumably with different capabilities and hardware. We are in the CentOS-6 forum area, but at least one system is CentOS-5. You posted a link to the shell script output from one system, and 20 log files, but it is not obvious to me under what circumstances the logs were created, or what they mean.
Please describe concisely what functionality you need, what OS and hardware are on the system on which the display is to be shown, and what is and is not working. |
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_________________
Phil Recommended reading: FAQ & Readme first ; Search hint: google "your topic site:centos.org"; Smart Questions |
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Posted on: 2012/3/28 18:57
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Re: Xnest on Centos 6 | #7 |
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Regular Board Member
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well I did install the next version of nvidia:
yum list installed "nvidia*" Installed Packages nvidia-x11-drv.x86_64 295.33-1.el5.elrepo installed didn't make any difference |
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Posted on: 2012/3/28 18:42
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Re: Xnest on Centos 6 | #6 |
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Regular Board Member
Joined: 2008/4/18
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thanks again for your time Phil
update to the current/supported release 5.8 with "yum update" done. I first disabled ElRepo, epel and rpmforge, yum update went smoothly what driver you are using for the Nvidia card yum list installed "nvidia*" nvidia-x11-drv.x86_64 195.36.31-1.el5.elrepo installed I then enable ElRepo yum list available "nvidia*" nvidia-x11-drv.x86_64 295.33-1.el5.elrepo elrepo so an obvious thing would be to install the latest nvidia driver genie is complaining that "XInputExtension not found" I copied genie:/log/var/gdm/10.117.202.63* to ftp.agr.gc.ca:/pub/outgoing/brimacp/xnest /getinfo.sh driver 07:00.0 VGA compatible controller [0300]: NVIDIA Corporation G71GL [Quadro FX 3500] [10de:029d] (rev a1) basedata.na4949 is in ftp.agr.gc.ca/pub/outgoing/brimacp/xnest basedata.na4649 is from the original box onottar |
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Posted on: 2012/3/28 14:32
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Re: Xnest on Centos 6 | #5 |
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Moderator
Joined: 2006/12/13
From Tidewater, Virginia, North America
Posts: 18773
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First thing is to update to the current/supported release 5.8 with "yum update". If still having problems, then we need to know what driver you are using for the Nvidia card, and if the dual monitors are otherwise working properly. It would also help for you to provide more information about your system by running "./getinfo.sh driver" and showing us the output file.
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_________________
Phil Recommended reading: FAQ & Readme first ; Search hint: google "your topic site:centos.org"; Smart Questions |
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Posted on: 2012/3/26 21:19
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Re: Xnest on Centos 6 | #4 |
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Regular Board Member
Joined: 2008/4/18
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well from a box called jeewani it worked!
Xnest -query genie :1 worked jeewani has only one monitor to a large extent the problem is solved but I still want to run Xnest from my original box called onottar for short onottar is running Centos 5.5, it also has two monitors (dual head) with an nvidia quatro graphics card on onottar I can run Xnest back to itself Xnest -query onottar :1 works in genie:/var/log/gdm there are two files that correspond to onottar 10.117.202.63:1-greeter.log 10.117.202.63:1-slave.log greeter.log has a message Xlib: extension "RANDR" missing on display "10.117.202.63:1.0". ** (gnome-settings-daemon:19737): WARNING **: Unable to start xrandr manager: RANDR extension is not present which I believe is simply designed to confuse people and also this: ** (gnome-power-manager:19750): WARNING **: No idle counter. Xlib: extension "DPMS" missing on display "10.117.202.63:1.0". <unknown>: Fatal IO error 11 (Resource temporarily unavailable) on X server 10.117.202.63:1.0. can anybody help me? |
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Posted on: 2012/3/26 19:41
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Re: Xnest on Centos 6 | #3 |
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Regular Board Member
Joined: 2008/4/18
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thanks Phil for your reply
I just went in to work and tried a few things, your command Xnest :1 -ac worked, I was able to start xclock so I went back and did Xnest -query genie :1 and it worked too! it had worked once before and now this is the second time I was able to login to genie, start eclipse, run five-in-a-row, everything worked except that sometimes in a terminal window I got capital letters even though cap locks was off capitals/no capitals was erratic, everything else worked curiouser and curiouser, if it worked twice then all the software had to be there? tomorrow I'll look through /var/log/gdm to see if I can see anything |
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Posted on: 2012/3/25 23:18
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Re: Xnest on Centos 6 | #2 |
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Moderator
Joined: 2006/12/13
From Tidewater, Virginia, North America
Posts: 18773
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I don't know what's with "-query" but logging in to genie vis ssh with X forwarding and running
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_________________
Phil Recommended reading: FAQ & Readme first ; Search hint: google "your topic site:centos.org"; Smart Questions |
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Posted on: 2012/3/24 0:01
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Xnest on Centos 6 | #1 |
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Regular Board Member
Joined: 2008/4/18
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Posts: 53
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I installed Centos 6 on a box called genie. From another box I want to connect to genie using Xnest. On genie I have edited /etc/gdm/custom.conf, I have also edited gdm.schemas so that DisallowTCP is false. I have rebooted genie many times.
From the other box I first say xhost +genie , I login to genie, set DISPLAY and run xclock and it works! what gets exciting is when on the other box I run Xnest :1 -query genie momentarily a window opens and then goes poof with a message *** glibc detected *** Xnest: free(): corrupted unsorted chunks: same thing happens when I bring the other box down to run level 3 and then do X -query genie same thing poof with a message from the other box, Xnest :1 -query hpux works! where hpux is the name of an hpux server any help would be appreciated. |
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Posted on: 2012/3/23 15:55
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