今天早上发现我的系统(debian lenny)突然无法加载数码相机了,插上usb系统立即弹出下面的错误窗。立即换上u盘再试,还是一样,看来和相机没关系。看了提示说,
A security policy in place prevents this sender from sending this message to this recipient, see message bus configuration file (rejected message had interface “org.freedesktop.Hal.Device.Volume” member “Mount” error name “(unset)” destination “org.freedesktop.Hal”)
是让我看message bus configuration 文件来解决。好,那就看一下。这个文件在哪? 噢,是啊,find一下,结果里面的 /etc/dbus-1/system.d/hal.conf 文件看起来很像。more 一下,发现里面定义了一些用户组相关的权限,其中的plugdev组的权限符合我们的要求,于是使用gpasswd -a xx plugdev 。将需要使用usb存储的xx用户加入到plugdev组里面,然后注销试一下,一些恢复正常。
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