平时蜂鸣器报警时声音很响亮啊?
采取的蜂鸣器听歌方式:
代码： 全选
rmmod pcspkr
modprobe snd-pcsp
mplayer -ao alsa:device=hw=pcsp ./XX.mp3代码： 全选
# dmidecode 2.12
SMBIOS 2.6 present.
41 structures occupying 1914 bytes.
Table at 0x000FCF50.
Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
Vendor: LENOVO
Version: 90KT20CUS
Release Date: 09/14/2010
Address: 0xF0000
Runtime Size: 64 kB
ROM Size: 1024 kB
Characteristics:
ISA is supported
PCI is supported
PNP is supported
APM is supported
BIOS is upgradeable
BIOS shadowing is allowed
ESCD support is available
Boot from CD is supported
Selectable boot is supported
BIOS ROM is socketed
EDD is supported
5.25"/1.2 MB floppy services are supported (int 13h)
3.5"/720 kB floppy services are supported (int 13h)
3.5"/2.88 MB floppy services are supported (int 13h)
Print screen service is supported (int 5h)
8042 keyboard services are supported (int 9h)
Serial services are supported (int 14h)
Printer services are supported (int 17h)
CGA/mono video services are supported (int 10h)
ACPI is supported
USB legacy is supported
LS-120 boot is supported
ATAPI Zip drive boot is supported
BIOS boot specification is supported
Targeted content distribution is supported
BIOS Revision: 1.20
