vim-latex suit forward search

Question

First, sorry for the cross-posting. I have posted it in https://tex.stackexchange.com/q/345060 as well.

I am trying to enable forward search in vim-latex. Since it is not working, I tried a vanilla .vimrc:

"Vundle Plugins" {{{
filetype off
set rtp+=~/.vim/bundle/Vundle.vim/
call vundle#begin()
Plugin 'gmarik/Vundle.vim'
Plugin 'vim-latex/vim-latex'          "  Latex IDE
call vundle#end()
filetype plugin indent on
" Vundle done
" "}}}

"language specific staffs:

"LaTeX: {{{
let g:tex_flavor = 'latex'
let g:Tex_DefaultTargetFormat = 'pdf'
let g:Tex_ViewRule_pdf = 'evince'
let g:syntastic_tex_checkers = ['lacheck']
"}}}

and a few line of latex:

\documentclass[a4paper]{article}
\synctex=1
\begin{document}
Lorem ipsum dolor sit amet, consetetur sadipscing elitr,  sed diam nonumy eirmod tempor invidunt ut 
labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores 
et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem 
ipsum dolor sit amet, consetetur sadipscing elitr,  sed diam nonumy eirmod tempor invidunt ut labore et 
dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. 
Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit 
amet, consetetur sadipscing elitr,  sed diam nonumy eirmod tempor invidunt ut labore et dolore magna 
aliquyam erat, sed diam voluptua. 

At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus
est Lorem ipsum dolor sit amet.
Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, 
vel illum dolore eu feugiat nulla facilisis at vero eros et accumsan et iusto odio dignissim qui blandit praesent 
luptatum zzril delenit augue duis dolore te feugait nulla facilisi. Lorem ipsum dolor sit amet, 
consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat.

Ut wisi enim ad minim veniam, quis nostrud exerci tation ullamcorper suscipit lobortis 
nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure dolor in hendrerit in 
vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulla facilisis at 
vero eros et accumsan et iusto odio dignissim qui blandit praesent luptatum zzril delenit
augue duis dolore te feugait nulla facilisi.
Nam liber tempor cum soluta nobis eleifend option congue nihil imperdiet doming id quod mazim 
placerat facer possim assum. Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam 
nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat. 
Ut wisi enim ad minim veniam, quis nostrud exerci tation ullamcorper suscipit lobortis nisl 
ut aliquip ex ea commodo consequat.
Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, 
vel illum dolore eu feugiat nulla facilisis.
hell
\end{document}

Obviously, it compiles fine, but, when I put cursor on a line, and do \ls, it prompts an evince window with error:

This file does not exists: /tmp/<line number where my cursor is>

I have also tried: https://tex.stackexchange.com/questions/2941/how-to-setup-synctex-with-vim-pdflatex-and-an-open-source-pdf-viewer-under-linu

but with now change.