[Paraview-developers] Remote rendering requirement of account privilege?

[Utkarsh Ayachit]

Great! Thanks for reporting back.

Utkarsh

On Fri, May 22, 2015 at 11:09 PM Di Cheng <chengdi at imech.ac.cn> wrote:

> Utkarsh
>
> I think I just figured out what is the problem. According to the "ps
> aux|grep X" command, the Xserver is started. But the Ubuntu OS is a desktop
> OS. There is a bug/feature that the ~/.Xauthority  file does not contain
> necessary magic cookie to connect the xserver. So here is a solution:
> $ sudo xauth -i list #check if there is xserver :0 authentication
> information
> $ sudo xauth merge <path to the xauth file>
>
> And the location of authority file can be found using "ps aux|grep X"
> A little problem is the ~/.Xauthority becomes owned by "root". So chown
> and chgrp should be called to change the owner and group
>
> Then "xhost +local:" can be called
> $
> -----Original Message-----
> From: Utkarsh Ayachit [mailto:utkarsh.ayachit at kitware.com]
> Sent: Thursday, May 21, 2015 11:37 PM
> To: Di Cheng
> Cc: ParaView Developers
> Subject: Re: [Paraview-developers] Remote rendering requirement of account
> privilege?
>
> Di,
>
> Try running "xhost +" with sudo.
>
>
>
> Utkarsh
>
> On Wed, May 20, 2015 at 9:42 PM, Di Cheng <chengdi at imech.ac.cn> wrote:
> > Utkarsh
> >
> > Thanks for your reply.
> > I tried to use "xhost +", but did not succeed. I also tried to " export
> XAUTHORITY=~/.Xauthority ", it did not work either.
> >
> > here is some detail of my system.
> > ----------------------------------------------------------------------
> > ---------------------------------------------
> > catdog at wei-H8QG6:~$ export DISPLAY=:0.0 catdog at wei-H8QG6:~$ xhost + No
> > protocol specified No protocol specified
> > xhost:  unable to open display ":0.0"
> > catdog at wei-H8QG6:~$ ps aux|grep X
> > catdog   15983  0.0  0.0  13588   920 pts/12   S+   23:34   0:00 grep
> --color=auto X
> > root     31779  0.3  0.0 156600 48244 tty7     Ss+  May13  36:32
> /usr/bin/X :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
> > catdog at wei-H8QG6:~$ uname -a
> > Linux wei-H8QG6 3.13.0-46-generic #79~precise1-Ubuntu SMP Tue Mar 10
> > 20:25:33 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux catdog at wei-H8QG6:~$
> > xeyes -display :0.0 No protocol specified No protocol specified
> > Error: Can't open display: :0.0
> > catdog at wei-H8QG6:~$ xauth list
> > wei-H8QG6/unix:15  MIT-MAGIC-COOKIE-1
> > 936664cd6304286ff79270c271ed3189
> > wei-H8QG6/unix:13  MIT-MAGIC-COOKIE-1
> > b11a44d6fb0786b816c73adf6bb0d361
> > wei-H8QG6/unix:14  MIT-MAGIC-COOKIE-1
> > b11a44d6fb0786b816c73adf6bb0d361
> > wei-H8QG6/unix:11  MIT-MAGIC-COOKIE-1
> > b77e756d05b97bdbade08e384c144a73
> > ----------------------------------------------------------------------
> > ---------------------------------------------
> >
> > -----Original Message-----
> > From: Utkarsh Ayachit [mailto:utkarsh.ayachit at kitware.com]
> > Sent: Wednesday, May 20, 2015 11:16 PM
> > To: Di Cheng
> > Cc: ParaView Developers
> > Subject: Re: [Paraview-developers] Remote rendering requirement of
> account privilege?
> >
> > You may want to check this (and related documentation) out:
> > http://www.x.org/archive/X11R6.8.0/doc/xhost.1.html
> >
> > Utkarsh
> >
> > On Mon, May 4, 2015 at 2:07 PM, Di Cheng <chengdi at imech.ac.cn> wrote:
> >> Hi, All
> >>
> >> I am running a remote pvserver on the Ubuntu server 12.04, when I was
> using old account, it can be run in remote rendering mode with option:
> "-display localhost:0". When I login as another user, I cannot. And when I
> connect it from windows, it pops up a window with some information to tell
> me I cannot do remote rendering.
> >>
> >> I do not know how remote rendering works, but it seems it requires some
> account privileges. How can I solve this problem? I have compared those two
> account, new account belongs to more groups. What can I do to deal with
> this problem? Using sudo?
> >>
> >> Di CHENG (Ph.D. candidate)
> >> Supersonic Combustion Group
> >> State Key Laboratory of High Temperature Gas Dynamics Institute of
> >> Mechanics, Chinese Academy of Sciences
> >> ADDRESS: No.15 Beisihuanxi Road, Beijing (100190) P. R. China
> >> E-mail: chengdi at imech.ac.cn
> >> Phone: +86-10-82544053
> >> Fax: +86-10-82544034
> >>
> >> 程迪 博士生
> >> 超声速燃烧课题组
> >> 高温气体动力学国家重点实验室
> >> 中国科学院力学研究所
> >> 地址：北京市海淀区北四环西路15号
> >> 邮编：100190
> >> 电子邮件：chengdi at imech.ac.cn
> >> 电话：+86-10-82544053
> >> 传真：+86-10-82544034
> >>
> >>
> >>
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