这个问题从 12.10 开始出现。之前它运行正常。现在，即使重新启动 alsa 也不起作用，我必须重新启动。
请询问详细信息。我正在运行 Ubuntu 12.10、Unity DE 和 gnome 3.6，没有第三方驱动程序。
谢谢
以下是sudo lshw输出：http://pastebin.com/vh3SGcZa
我尝试删除并重新添加音频内核模块 - 但是
不能sudo modprobe -r snd_hda_intel。它给了FATAL: Module snd_hda_intel is in use
以下是/etc/modprobe.d/alsa-base.conf内容：http://pastebin.com/yvArB2ex
我的笔记本电脑型号是 HP 6730s
我/var/log/syslog发现了以下内容：
kernel: [ 33.847111] pci_pm_runtime_suspend(): azx_runtime_suspend+0x0/0x40 [snd_hda_intel] returns -11
cat /sys/module/snd_hda_intel/parameters/power_save给予0
cat /sys/bus/pci/devices/0000\:00\:1b.0/power/control给予on
pacmd list-sinks：
Welcome to PulseAudio! Use "help" for usage information.
>>> 1 sink(s) available.
* index: 0
name: <alsa_output.pci-0000_00_1b.0.analog-stereo>
driver: <module-alsa-card.c>
flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
state: SUSPENDED
suspend cause: IDLE
priority: 9959
volume: 0: 100% 1: 100%
0: 0,00 dB 1: 0,00 dB
balance 0,00
base volume: 100%
0,00 dB
volume steps: 65537
muted: no
current latency: 0,00 ms
max request: 0 KiB
max rewind: 0 KiB
monitor source: 0
sample spec: s16le ch 2 48000 Hz
channel map: front-left,front-right
Stereo
used by: 0
linked by: 0
configured latency: 0,00 ms; range is 1,00 .. 341,33 ms
card: 0 <alsa_card.pci-0000_00_1b.0>
module: 4
properties:
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "AD198x Analog"
alsa.id = "AD198x Analog"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "0"
alsa.card_name = "HDA Intel"
alsa.long_card_name = "HDA Intel at 0xd8900000 irq 49"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:00:1b.0"
sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card0"
device.bus = "pci"
device.vendor.id = "8086"
device.vendor.name = "Intel Corporation"
device.product.name = "82801I (ICH9 Family) HD Audio Controller"
device.form_factor = "internal"
device.string = "front:0"
device.buffering.buffer_size = "65536"
device.buffering.fragment_size = "32768"
device.access_mode = "mmap+timer"
device.profile.name = "analog-stereo"
device.profile.description = "Stereo analogico"
device.description = "Audio interno Stereo analogico"
alsa.mixer_name = "Analog Devices AD1984A"
alsa.components = "HDA:11d4194a,103c3614,00100400 HDA:11c11040,103c1378,00100200"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
ports:
analog-output: Uscita analogica (priority 9900, available: unknown)
properties:
active port: <analog-output>
答案1
以下操作你尝试过吗？
sudo gedit /etc/pm/sleep.d/50alsa
将以下行添加到文件中。
case "$1" in
hibernate|suspend)
# Stopping is not required
;;
thaw|resume)
/sbin/alsa force-reload
;;
*) exit $NA
;;
esac
按Ctrl+S保存此文件，然后使用以下命令使该文件可执行。
sudo chmod +x /etc/pm/sleep.d/50alsa
答案2
日志中的错误似乎表明在暂停声卡时出现了问题。您是否检查过 Linux 是否设置为暂停声卡，或者是否禁用了省电功能？阅读了有关该主题的几页内容后，我认为以下信息可能会有所帮助。
检查 HDA-Intel 驱动程序中的省电功能：
cat /sys/module/snd_hda_intel/parameters/power_save
https://lesswatts.org/tips/misc.php
使用 PCI 接口检查省电选项：
cat /sys/bus/pci/devices/*/power/control # '*' should match the sound card's PCI Address, as listed in 'lshw'
检查声卡当前状态，根据Pulse Audio：
pacmd list-sinks # Look for 'suspend', 'suspend-cause' and 'alsa.card_name'
http://en.wikibooks.org/wiki/Configuring_Sound_on_Linux/Pulse_Audio/Testing
答案3
错误代码 -11 表示 -EAGAIN。根据目前的源代码
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=sound/pci/hda/hda_intel.c
3.7 和 trunk 之间有几处发生了变化。在 trunk 中，此方法中不存在特定返回值。问题很可能已在上游修复。您可以使用每日（或等待 rc）主线内核进行测试以确认这一点。如果一切正常，您可能只会使用该内核。如果不行，您可以将发现报告给提到的错误条目（https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1066488）以帮助开发人员修复它...