Hi My laptop has a Sis Azalia sound chipset. And default the sound volume is pretty low. As a workarround i use pulseaudio on top of alsa with ladspa amp.so plugin to increase volume.
I found out that one can use ladspa plugins directly in alsa and i am trying to do so. But for some reason things are not working when i try to use ladspa in alsa. [parant...@labda: /usr/share/sounds/purple]$ aplay -D azalia_plug login.wav Playing WAVE 'login.wav' : Signed 16 bit Little Endian, Rate 22050 Hz, Stereo ALSA lib pcm_params.c:2135:(snd1_pcm_hw_refine_slave) Slave PCM not usable aplay: set_params:939: Broken configuration for this PCM: no configurations available [parant...@labda: /usr/share/sounds/purple]$ alsaplayer -d azalia_plug login.wav ALSA lib pcm_params.c:2135:(snd1_pcm_hw_refine_slave) Slave PCM not usable error on snd_pcm_hw_par/ams_any Unavailable hw params: ACCESS: ALL FORMAT: ALL SUBFORMAT: ALL SAMPLE_BITS: ALL FRAME_BITS: ALL CHANNELS: [0 10000] RATE: [4000 4294967295] PERIOD_TIME: ALL PERIOD_SIZE: ALL PERIOD_BYTES: ALL PERIODS: ALL BUFFER_TIME: ALL BUFFER_SIZE: ALL BUFFER_BYTES: ALL TICK_TIME: ALL ALSA lib pcm_params.c:2135:(snd1_pcm_hw_refine_slave) Slave PCM not usable error on snd_pcm_hw_par/ams_any Unavailable hw params: ACCESS: ALL FORMAT: ALL SUBFORMAT: ALL SAMPLE_BITS: ALL FRAME_BITS: ALL CHANNELS: [0 10000] RATE: [4000 4294967295] PERIOD_TIME: ALL PERIOD_SIZE: ALL PERIOD_BYTES: ALL PERIODS: ALL BUFFER_TIME: ALL BUFFER_SIZE: ALL BUFFER_BYTES: ALL TICK_TIME: ALL failed to configure output device...trying OSS ALSA lib pcm_params.c:2135:(snd1_pcm_hw_refine_slave) Slave PCM not usable error on snd_pcm_hw_par/ams_any Unavailable hw params: ACCESS: ALL FORMAT: ALL SUBFORMAT: ALL SAMPLE_BITS: ALL FRAME_BITS: ALL CHANNELS: [0 10000] RATE: [4000 4294967295] PERIOD_TIME: ALL PERIOD_SIZE: ALL PERIOD_BYTES: ALL PERIODS: ALL BUFFER_TIME: ALL BUFFER_SIZE: ALL BUFFER_BYTES: ALL TICK_TIME: ALL ALSA lib pcm_params.c:2135:(snd1_pcm_hw_refine_slave) Slave PCM not usable error on snd_pcm_hw_par/ams_any Unavailable hw params: ACCESS: ALL FORMAT: ALL SUBFORMAT: ALL SAMPLE_BITS: ALL FRAME_BITS: ALL CHANNELS: [0 10000] RATE: [4000 4294967295] PERIOD_TIME: ALL PERIOD_SIZE: ALL PERIOD_BYTES: ALL PERIODS: ALL BUFFER_TIME: ALL BUFFER_SIZE: ALL BUFFER_BYTES: ALL TICK_TIME: ALL failed to configure output device...trying OSS However if I use plug:azalia_dmix instead of azalia_plug sound works. So i feel its some problem with using ladspa. I have tried other ladspa plugins too but they also have the same error. Here are my specs: - [parant...@labda: ~]$ cat /etc/debian_version squeeze/sid [parant...@labda: ~]$ uname -r 2.6.26-1-amd64 alsa-base Version: 1.0.19.dfsg-3 alsa-modules-2.6.26-1-amd64 Version: 1.0.17.dfsg-4+2.6.26-12 [parant...@labda: ~]$ lspci 00:00.0 Host bridge: Silicon Integrated Systems [SiS] 671MX 00:01.0 PCI bridge: Silicon Integrated Systems [SiS] SiS AGP Port (virtual PCI-to-PCI bridge) 00:02.0 ISA bridge: Silicon Integrated Systems [SiS] SiS968 [MuTIOL Media IO] (rev 01) 00:02.5 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE] (rev 01) 00:03.0 USB Controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 0f) 00:03.1 USB Controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 0f) 00:03.3 USB Controller: Silicon Integrated Systems [SiS] USB 2.0 Controller 00:04.0 Ethernet controller: Silicon Integrated Systems [SiS] 191 Gigabit Ethernet Adapter (rev 02) 00:05.0 IDE interface: Silicon Integrated Systems [SiS] SATA Controller / IDE mode (rev 03) 00:06.0 PCI bridge: Silicon Integrated Systems [SiS] PCI-to-PCI bridge 00:07.0 PCI bridge: Silicon Integrated Systems [SiS] PCI-to-PCI bridge 00:0d.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev b4) 00:0d.1 FireWire (IEEE 1394): Ricoh Co Ltd R5C552 IEEE 1394 Controller (rev 09) 00:0d.2 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 18) 00:0d.3 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev 09) 00:0d.4 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev ff) 00:0f.0 Audio device: Silicon Integrated Systems [SiS] Azalia Audio Controller 01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS] 771/671 PCIE VGA Display Adapter (rev 10) 02:00.0 Ethernet controller: Atheros Communications Inc. AR242x 802.11abg Wireless PCI Express Adapter (rev 01) [parant...@labda: ~]$ cat ~/.asoundrc pcm.azalia_hw { type hw card 0 device 0 } pcm.azalia_dmix { type dmix ipc_key 1024 slave.pcm azalia_hw } pcm.azalia_amp { type ladspa slave.pcm azalia_dmix path "/usr/lib/ladspa" playback_plugins.0 { id 1049 label amp_stereo filename "/usr/lib/ladspa/amp.so" input.controls [ 1.0 ] } } pcm.azalia_plug { type plug slave.pcm azalia_amp } ctl.azalia_hw { type hw card 0 device 0 } Thanks in advance -- Parantapa Bhattcharya -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org