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我正在ROS靛蓝时无法抓取包。安装ROS后，我想安装uvc相机，但遇到错误。中的NVIDIA Tegra K1安装ROS的靛蓝UVC摄像头
ERR http://ports.ubuntu.com/ubuntu-ports/可信任/主libv4l2rds0 armhf 1.0.1-1连接失败[IP：91.189.88.150 80] ERR http://packages.ros.org/ros/ubuntu/可信任/主 ROS的靛蓝照相机校准的解析器armhf 1.11.10 -0trusty-20160629-210550-0700连接失败[IP：64.50.233.100 80] E：无法抓取http://ports.ubuntu.com/ubuntu-ports/pool/main/v/v4l-utils/libv4l2rds0_1.0.1-1_armhf.deb 连接失败[IP：91.189.88.150 80]
E：无法抓取 http://packages.ros.org/ros/ubuntu/pool/main/r/ros-indigo-camera-calibration-parsers/ros-indigo-camera-calibration-parsers_1.11.10-0trusty-20160629-210550-0700_armhf.deb 连接失败[ IP：64.50.233.100 80]
E：无法提取一些档案，也许运行apt-get update或与 --fix缺失试试？
我怀疑这是由于源列表，这里是我的源列表。
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://ports.ubuntu.com/ubuntu-ports/ trusty main restricted universe multiverse
deb-src http://ports.ubuntu.com/ubuntu-ports/ trusty main restricted universe multiverse
## Major bug fix updates produced after the final release of the
## distribution.
deb http://ports.ubuntu.com/ubuntu-ports/ trusty-updates main restricted universe multiverse
deb-src http://ports.ubuntu.com/ubuntu-ports/ trusty-updates main restricted universe multiverse
## Uncomment the following two lines to add software from the 'universe'
## repository.
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
# deb http://ports.ubuntu.com/ubuntu-ports/ trusty universe
# deb-src http://ports.ubuntu.com/ubuntu-ports/ trusty universe
# deb http://ports.ubuntu.com/ubuntu-ports/ trusty-updates universe
# deb-src http://ports.ubuntu.com/ubuntu-ports/ trusty-updates universe
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
# deb http://ports.ubuntu.com/ubuntu-ports/ trusty-backports main restricted
# deb-src http://ports.ubuntu.com/ubuntu-ports/ trusty-backports main restricted
deb http://ports.ubuntu.com/ubuntu-ports/ trusty-security main restricted universe multiverse
deb-src http://ports.ubuntu.com/ubuntu-ports/ trusty-security main restricted universe multiverse
# deb http://ports.ubuntu.com/ubuntu-ports/ trusty-security universe
# deb-src http://ports.ubuntu.com/ubuntu-ports/ trusty-security universe
# deb http://ports.ubuntu.com/ubuntu-ports/ trusty-security multiverse
# deb-src http://ports.ubuntu.com/ubuntu-ports/ trusty-security multiverse