几天前我安装了一些 Ubuntu 12.04 更新。更新后，我没有任何声音。当我使用旧内核 3.2.0-23 时一切正常，我使用的是 i386 版本的 Ubuntu。
petat@mujlin:~$ aplay -l
aplay: device_list:252: žádné zvukové karty nenalezeny...(any sound card found...)
但
petat@mujlin:~$ lspci -v
[...]
00:14.2 Audio device: Advanced Micro Devices [AMD] nee ATI SBx00 Azalia (Intel HDA)
Subsystem: Giga-byte Technology GA-MA770-DS3rev2.0 Motherboard
Flags: bus master, slow devsel, latency 32, IRQ 7
Memory at fe024000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel modules: snd-hda-intel
[...]
01:05.1 Audio device: Advanced Micro Devices [AMD] nee ATI RS780 HDMI Audio [Radeon HD 3000-3300 Series]
Subsystem: Advanced Micro Devices [AMD] nee ATI RS780 HDMI Audio [Radeon HD 3000-3300 Series]
Flags: bus master, fast devsel, latency 0, IRQ 3
Memory at fdffc000 (32-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel modules: snd-hda-intel
和
petat@mujlin:~$ bash alsa-info.sh --stdout
/sbin/alsactl: save_state:1580: No soundcards found...
cat: /tmp/alsa-info.VCc4whbRLa/alsactl.tmp: No such file or directory upload=true&script=true&cardinfo=
!!################################
!!ALSA Information Script v 0.4.60
!!################################
!!Script ran on: Tue May 29 16:45:06 UTC 2012
!!Linux Distribution
!!------------------
Ubuntu 12.04 LTS \n \l DISTRIB_ID=Ubuntu DISTRIB_DESCRIPTION="Ubuntu 12.04 LTS"
!!DMI Information
!!---------------
Manufacturer: Gigabyte Technology Co., Ltd.
Product Name: GA-MA78GM-S2H
Product Version:
!!Kernel Information
!!------------------
Kernel release: 3.2.0-24-generic-pae
Operating System: GNU/Linux
Architecture: i686
Processor: athlon
SMP Enabled: Yes
!!ALSA Version
!!------------
Driver version: 1.0.24
Library version: 1.0.25
Utilities version: 1.0.25
!!Loaded ALSA modules
!!-------------------
!!Sound Servers on this system
!!----------------------------
Pulseaudio:
Installed - Yes (/usr/bin/pulseaudio)
Running - Yes
!!Soundcards recognised by ALSA
!!-----------------------------
--- no soundcards ---
!!PCI Soundcards installed in the system
!!--------------------------------------
00:14.2 Audio device: Advanced Micro Devices [AMD] nee ATI SBx00 Azalia (Intel HDA)
01:05.1 Audio device: Advanced Micro Devices [AMD] nee ATI RS780 HDMI Audio [Radeon HD 3000-3300 Series]
!!Advanced information - PCI Vendor/Device/Subsystem ID's
!!--------------------------------------------------------
00:14.2 0403: 1002:4383
Subsystem: 1458:a022
--
01:05.1 0403: 1002:960f
Subsystem: 1002:960f
!!Modprobe options (Sound related)
!!--------------------------------
snd-atiixp-modem: index=-2
snd-intel8x0m: index=-2
snd-via82xx-modem: index=-2
snd-usb-audio: index=-2
snd-usb-caiaq: index=-2
snd-usb-ua101: index=-2
snd-usb-us122l: index=-2
snd-usb-usx2y: index=-2
snd-cmipci: mpu_port=0x330 fm_port=0x388
snd-pcsp: index=-2
snd-usb-audio: index=-2
snd_hda_intel: model=hp-dv6
snd_hda_intel: model=hp-dv6
snd_hda_intel: model=hp-dv6
snd-hda-intel: model=eapd probe_mask=1 position_fix=1
snd_hda_intel: model=hp-dv6
!!Loaded sound module options
!!--------------------------
!!ALSA Device nodes
!!-----------------
crw-rw---T+ 1 root audio 116, 1 May 29 18:13 /dev/snd/seq
crw-rw---T+ 1 root audio 116, 33 May 29 18:13 /dev/snd/timer
!!Aplay/Arecord output
!!------------
APLAY
aplay: device_list:252: no soundcards found...
ARECORD
arecord: device_list:252: no soundcards found...
!!Amixer output
!!-------------
!!Alsactl output
!!-------------
--startcollapse--
--endcollapse--
!!All Loaded Modules
!!------------------
Module
snd_seq_dummy
snd_hrtimer
nls_iso8859_1
nls_cp437
vfat
fat
pci_stub
vboxpci
vboxnetadp
vboxnetflt
vboxdrv
bnep
rfcomm
bluetooth
parport_pc
ppdev
binfmt_misc
vesafb
snd_hda_codec
snd_hwdep
snd_pcm
snd_seq_midi
snd_rawmidi
usblp
snd_seq_midi_event
fglrx
snd_seq
snd_timer
joydev
snd_seq_device
snd
soundcore
sp5100_tco
snd_page_alloc
shpchp
wmi
i2c_piix4
mac_hid
psmouse
k8temp
serio_raw
lp
parport
usbhid
hid
firewire_ohci
8139too
firewire_core
crc_itu_t
8139cp
pata_atiixp
r8169
usb_storage
!!ALSA/HDA dmesg
!!------------------
[ 13.048454] usbcore: registered new interface driver usblp
[ 14.617938] snd_hda_intel: Unknown symbol vga_default_device (err 0)
[ 14.618006] snd_hda_intel: Unknown symbol vga_default_device (err 0)
[ 14.618900] snd_hda_intel: Unknown symbol vga_default_device (err 0)
[ 14.619085] snd_hda_intel: Unknown symbol vga_default_device (err 0)
[ 14.996659] type=1400 audit(1338308035.953:2): apparmor="STATUS" operation="profile_load" name="/sbin/dhclient" pid=677 comm="apparmor_parser"