diff options
| author | Takashi Iwai <tiwai@suse.de> | 2007-09-17 19:08:32 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2007-10-16 16:50:52 +0200 |
| commit | 3723e2d25151f919e55da98f89a2787802ad5494 (patch) | |
| tree | dbec4e33ebef38af1e94930d8490fb8ffd9b1e17 /Documentation/sound/alsa/ALSA-Configuration.txt | |
| parent | 7a5a27cfaedf8589600b7ae585f3ca42b2d3c78a (diff) | |
[ALSA] Add description about power-saving mode
Added the description about power-saving mode on AC97 and HD-audio drivers.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Diffstat (limited to 'Documentation/sound/alsa/ALSA-Configuration.txt')
| -rw-r--r-- | Documentation/sound/alsa/ALSA-Configuration.txt | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt index ef330715c6d..9268925f8e4 100644 --- a/Documentation/sound/alsa/ALSA-Configuration.txt +++ b/Documentation/sound/alsa/ALSA-Configuration.txt @@ -770,7 +770,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. codecs (for debugging only) enable_msi - Enable Message Signaled Interrupt (MSI) (default = off) power_save - Automatic power-saving timtout (in second, 0 = - disable, default = 10) + disable) power_save_controller - Reset HD-audio controller in power-saving mode (default = on) @@ -1024,11 +1024,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel ML (see the section "Links and Addresses"). - When CONFIG_SND_HDA_POWER_SAVE is set, two options, power_save and - power_save_controller become available. power_save specifies the - time to turn off the power automatically at idle status. When - power_save_controller is true, the controller is also turned off. - This might result in more obvious click noise at turning on/off. + power_save and power_save_controller options are for power-saving + mode. See powersave.txt for details. Note 2: If you get click noises on output, try the module option position_fix=1 or 2. position_fix=1 will use the SD_LPIB |