从 12.04 干净安装了 Ubuntu 12.10，现在声音不起作用。在 12.04 中，它开箱即用。
我跑了 hwinfo --sound
hal.1: read hal dataprocess 4222: arguments to dbus_move_error() were incorrect, assertion "(dest) == NULL || !dbus_error_is_set ((dest))" failed in file ../../dbus/dbus-errors.c line 282.
This is normally a bug in some application using the D-Bus library.
libhal.c 3483 : Error unsubscribing to signals, error=The name org.freedesktop.Hal was not provided by any .service files
10: PCI 1b.0: 0403 Audio device
[Created at pci.318]
Unique ID: u1Nb.ekgK5auW5RA
SysFS ID: /devices/pci0000:00/0000:00:1b.0
SysFS BusID: 0000:00:1b.0 …