我正在尝试启动并运行vpn，并通过shrew软客户端执行此操作。当我去运行命令时：
sudo apt-get install libqt4-core libqt4-dev libqt4-gui qt4-dev-tools
我得到以下输出流：
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:
libqt4-core : Depends: libqt4-dbus (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
Depends: libqt4-network (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
Depends: libqt4-script (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
Depends: libqt4-test (= 4:4.8.1-0ubuntu4.9) but it is not going to be installed
Depends: libqt4-xml (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
Depends: libqtcore4 (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
libqt4-dev : Depends: libqt4-dbus (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
Depends: libqt4-declarative (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
Depends: libqt4-designer (= 4:4.8.1-0ubuntu4.9) but it is not going to be installed
Depends: libqt4-help (= 4:4.8.1-0ubuntu4.9) but it is not going to be installed
Depends: libqt4-network (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
Depends: libqt4-qt3support (= 4:4.8.1-0ubuntu4.9) but it is not going to be installed
Depends: libqt4-script (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
Depends: libqt4-scripttools (= 4:4.8.1-0ubuntu4.9) but it is not going to be installed
Depends: libqt4-sql (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
Depends: libqt4-svg (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
Depends: libqt4-test (= 4:4.8.1-0ubuntu4.9) but it is not going to be installed
Depends: libqt4-xml (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
Depends: libqt4-xmlpatterns (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
Depends: libqtcore4 (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
Depends: libqtgui4 (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
Depends: qt4-linguist-tools (= 4:4.8.1-0ubuntu4.9) but it is not going to be installed
Recommends: libqt4-opengl-dev (= 4:4.8.1-0ubuntu4.9) but it is not going to be installed
Recommends: libqtwebkit-dev (>= 2.0~) but it is not going to be installed
libqt4-gui : Depends: libqt4-designer (= 4:4.8.1-0ubuntu4.9) but it is not going to be installed
Depends: libqt4-opengl (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
Depends: libqt4-svg (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
Depends: libqtgui4 (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
qt4-dev-tools : Depends: libqt4-dbus (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
Depends: libqt4-declarative (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
Depends: libqt4-help (= 4:4.8.1-0ubuntu4.9) but it is not going to be installed
Depends: libqt4-xml (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
Depends: libqt4-xmlpatterns (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
Depends: libqtcore4 (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
Depends: libqtgui4 (= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu5~precise1~test1 is to be installed
Recommends: qt4-designer but it is not going to be installed
Recommends: qt4-doc but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
我在网上搜索无济于事。我已经运行了apt-get -f install和dpkg --configure -a但仍然无法安装。我甚至greped持有包但没有输出。关于为什么或指向正确方向的任何想法？如果重要的话，我会在Chromebook上以12.04的精确度进行chroot。 干杯