笔记本是自带的音响能用，而耳机不能用,9.04

[lichen6928]

我的笔记本的声卡是
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02)
但是笔记本是自带的音响能用，而耳机不能用，这是为什么呢？系统 9.04。

[lichen6928]

*-multimedia
description: Audio device
product: 82801G (ICH7 Family) High Definition Audio Controller
vendor: Intel Corporation
physical id: 1b
bus info: pci@0000:00:1b.0
version: 02
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=HDA Intel latency=0 module=snd_hda_intel

[xwwclqh]

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