<div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial"> Hi, I want to install xCAT on my server which can not access the internet. This software need may dependecy packages, so I download all of them one by one with <a href="http://us.archive.ubuntu.com/ubuntu/dists/precise/main/binary-amd64/" target="_blank">http://us.archive.ubuntu.com/ubuntu/dists/precise/main/binary-amd64/</a> and <a href="http://us.archive.ubuntu.com/ubuntu/dists/precise/universe/binary-amd64/." target="_blank">http://us.archive.ubuntu.com/ubuntu/dists/precise/universe/binary-amd64/.</a> And run dpkg-scanpackages . > Packages to create the local repository. But I met the error show on the title. Thanks. root@hs23n01kvm15:/data/ubunturepo# apt-get install libxml-sax-perl Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: libc6 : Depends: tzdata but it is not going to be installed libxml-sax-perl : Depends: perl but it is not going to be installed Depends: libxml-namespacesupport-perl but it is not going to be installed Depends: libxml-sax-base-perl but it is not going to be installed Depends: ucf (>= 0.28) but it is not going to be installed Recommends: libxml-sax-expat-perl but it is not installable E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages. In fact these 4 packages are all can installed by apt-get, why the libxml-sax-perl can not be installed? some information about my server root@hs23n01kvm15:/data/ubunturepo# lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 12.04.1 LTS Release: 12.04 Codename: precise root@hs23n01kvm15:/data/ubunturepo# apt-cache search libxml-namespacesupport-perl libxml-namespacesupport-perl - Perl module for supporting simple generic namespaces root@hs23n01kvm15:/data/ubunturepo# apt-cache search libxml-sax-base-perl libxml-sax-base-perl - base class for SAX drivers and filters root@hs23n01kvm15:/data/ubunturepo# dpkg -l |grep perl ii libalgorithm-diff-perl 1.19.02-2 module to find differences between files ii libalgorithm-diff-xs-perl 0.04-2build2 module to find differences between files (XS accelerated) ii libalgorithm-merge-perl 0.08-2 Perl module for three-way merge of textual data ii libclass-isa-perl 0.36-3 report the search path for a class's ISA tree ii libdpkg-perl 1.16.1.2ubuntu7 Dpkg perl modules ii liblocale-gettext-perl 1.05-7build1 module using libc functions for internationalization in Perl ii libperl5.14 5.14.2-6ubuntu2.1 shared Perl library ii libswitch-perl 2.16-2 switch statement for Perl ii libtext-charwidth-perl 0.04-7build1 get display widths of characters on the terminal ii libtext-iconv-perl 1.7-5 converts between character sets in Perl ii libtext-wrapi18n-perl 0.06-7 internationalized substitute of Text::Wrap ii libtimedate-perl 1.2000-1 collection of modules to manipulate date/time information ri perl 5.14.2-6ubuntu2.1 Larry Wall's Practical Extraction and Report Language ii perl-base 5.14.2-6ubuntu2.1 minimal Perl system ii perl-modules 5.14.2-6ubuntu2.1 Core Perl modules root@hs23n01kvm15:/data/ubunturepo# dpkg -l |grep ucf ii ucf 3.0025+nmu2ubuntu1 Update Configuration File: preserve user changes to config files. root@hs23n01kvm15:/data/ubunturepo# ls -l total 21064 -rw-r--r-- 1 root root 163130 Sep 24 09:13 expect_5.45-2_amd64.deb -rw-r--r-- 1 root root 80004 Sep 24 09:13 expect-dev_5.45-2_amd64.deb -rw-r--r-- 1 root root 109706 Sep 24 09:13 expect-lite_4.2.0-0ubuntu1_all.deb -rw-r--r-- 1 root root 36958 Sep 24 09:25 fping_2.4b2-to-ipv6-16.1_amd64.deb -rw-r--r-- 1 root root 94018 Sep 24 09:28 libdbd-sqlite3-perl_1.35-1_amd64.deb -rw-r--r-- 1 root root 863838 Sep 24 09:35 libssl0.9.8_0.9.8o-7ubuntu2_amd64.deb -rw-r--r-- 1 root root 1647550 Sep 24 09:35 libssl0.9.8-dbg_0.9.8o-7ubuntu2_amd64.deb -rw-r--r-- 1 root root 206954 Sep 24 09:26 libsys-virt-perl_0.9.7-2_amd64.deb -rw-r--r-- 1 root root 15300 Sep 24 08:26 libxml-namespacesupport-perl_1.09-3_all.deb -rw-r--r-- 1 root root 265316 Sep 24 09:26 libxml-parser-perl_2.41-1build1_amd64.deb -rw-r--r-- 1 root root 21514 Sep 24 09:42 libxml-sax-base-perl_1.07-1_all.deb -rw-r--r-- 1 root root 64452 Sep 24 08:26 libxml-sax-perl_0.99+dfsg-1_all.deb -rw-r--r-- 1 root root 73418 Sep 24 08:26 libxml-simple-perl_2.18-3_all.deb -rw-r--r-- 1 root root 55230 Sep 24 09:54 Packages -rw-r--r-- 1 root root 870028 Sep 24 09:25 tcl8.4_8.4.19-4ubuntu3_amd64.deb -rw-r--r-- 1 root root 700914 Sep 24 09:25 tcl8.4-dev_8.4.19-4ubuntu3_amd64.deb -rw-r--r-- 1 root root 851944 Sep 24 09:25 tcl8.4-doc_8.4.19-4ubuntu3_all.deb -rw-r--r-- 1 root root 4690 Sep 24 09:25 tcl_8.5.0-2_all.deb -rw-r--r-- 1 root root 1097730 Sep 24 09:25 tcl8.5_8.5.11-1ubuntu1_amd64.deb -rw-r--r-- 1 root root 971758 Sep 24 09:25 tcl8.5-dev_8.5.11-1ubuntu1_amd64.deb -rw-r--r-- 1 root root 1018392 Sep 24 09:25 tcl8.5-doc_8.5.11-1ubuntu1_all.deb -rw-r--r-- 1 root root 6706 Sep 24 09:25 tcl8.5-kwwidgets_1.0.0~cvs20100930-6_amd64.deb -rw-r--r-- 1 root root 17654 Sep 24 09:25 tclcl_1.20-6_amd64.deb -rw-r--r-- 1 root root 59698 Sep 24 09:25 tclcl-dbg_1.20-6_amd64.deb -rw-r--r-- 1 root root 4238 Sep 24 09:25 tclcl-dev_1.20-6_all.deb -rw-r--r-- 1 root root 270702 Sep 24 09:25 tcl-combat_0.8.1-1_all.deb -rw-r--r-- 1 root root 39960 Sep 24 09:25 tclcsound_5.17.6~dfsg-1_amd64.deb -rw-r--r-- 1 root root 74408 Sep 24 09:25 tclcurl_7.19.6-3_amd64.deb -rw-r--r-- 1 root root 7002 Sep 24 09:25 tcl-dev_8.5.0-2_all.deb -rw-r--r-- 1 root root 116724 Sep 24 09:25 tcl-doc_8.5.0-2_all.deb -rw-r--r-- 1 root root 48452 Sep 24 09:25 tclex_1.2a1-15_amd64.deb -rw-r--r-- 1 root root 9798 Sep 24 09:25 tclgeoip_0.2-1_amd64.deb -rw-r--r-- 1 root root 4714192 Sep 24 09:25 tcllib_1.14-dfsg-1_all.deb -rw-r--r-- 1 root root 59050 Sep 24 09:25 tclodbc_2.5.1-1.1build1_amd64.deb -rw-r--r-- 1 root root 65442 Sep 24 09:25 tclreadline_2.1.0-10_amd64.deb -rw-r--r-- 1 root root 116750 Sep 24 09:25 tclthread_2.6.6-1_amd64.deb -rw-r--r-- 1 root root 66334 Sep 24 09:25 tcl-tls_1.5.0.dfsg-10build1_amd64.deb -rw-r--r-- 1 root root 81372 Sep 24 09:25 tcl-trf_2.1.4-dfsg-2build2_amd64.deb -rw-r--r-- 1 root root 14742 Sep 24 09:25 tcl-trf-dev_2.1.4-dfsg-2build2_amd64.deb -rw-r--r-- 1 root root 122928 Sep 24 09:25 tcl-trf-doc_2.1.4-dfsg-2build2_all.deb -rw-r--r-- 1 root root 105122 Sep 24 09:25 tclvfs_1.3-20080503-1_amd64.deb -rw-r--r-- 1 root root 5260006 Sep 24 09:25 tcl-vtk_5.8.0-5_amd64.deb -rw-r--r-- 1 root root 101542 Sep 24 09:25 tclx8.4_8.4.0-3_amd64.deb -rw-r--r-- 1 root root 96404 Sep 24 09:25 tclx8.4-dev_8.4.0-3_amd64.deb -rw-r--r-- 1 root root 74352 Sep 24 09:25 tclx8.4-doc_8.4.0-3_all.deb -rw-r--r-- 1 root root 172624 Sep 24 09:25 tclxapian_1.2.8-1_amd64.deb -rw-r--r-- 1 root root 397054 Sep 24 09:25 tclxml_3.2-1_amd64.deb </div>