I can confirm the but in the ubuntu 11.04 package build. Everything seems to be fine, modules loaded and stuff. But I can't find the hdspmixer. Normally it's included in the alsa-tools and alsa-tools-gui packages. And actually the mixer GUI does get an entry in the menu. But there is no command for it to execute. It is supposed to run hdspmixer - but it's not there. If I write "hdsp" and try to autocomplete with tab in the terminal, I can now only se hdsploader and hdspconf (both seem to run just fine btw.). From lspci 02:09.0 Multimedia audio controller: Xilinx Corporation RME Hammerfall DSP (rev 9a) From lshw: description: Multimedia audio controller product: RME Hammerfall DSP vendor: Xilinx Corporation physical id: 9 bus info: pci@0000:02:09.0 version: 9a width: 32 bits clock: 33MHz capabilities: bus_master configuration: driver=RME Hammerfall DSP latency=255 resources: irq:19 memory:fdff0000-fdffffff uname -a: Linux lars-desktop 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:50 UTC 2011 i686 athlon i386 GNU/Linux Version of alsa-tools: *** 1.0.24.1-0ubuntu1 0 Version of alsa-firmware-loaders: *** 1.0.24.1-0ubuntu1 0 cat /proc/asound/version Advanced Linux Sound Architecture Driver Version 1.0.23. cat /proc/asound/cards 0 [DSP ]: H-DSP - Hammerfall DSP RME Hammerfall HDSP 9632 at 0xfdff0000, irq 19 cat /proc/asound/modules 0 snd_hdsp cat /proc/asound/DSP/hdsp RME Hammerfall HDSP 9632 (Card #1) Buffers: capture f2400000 playback f2600000 IRQ: 19 Registers bus: 0xfdff0000 VM: 0xf819c000 Control register: 0x300409a Control2 register: 0x0 Status register: 0x32000000 Status2 register: 0xffff8701 FIFO status: 0 MIDI1 Output status: 0xffffff00 MIDI1 Input status: 0xffffff00 MIDI2 Output status: 0xffffff00 MIDI2 Input status: 0xffffff00 Use Midi Tasklet: on Buffer Size (Latency): 2048 samples (2 periods of 8192 bytes) Hardware pointer (frames): 0 Precise pointer: off Line out: on Firmware version: 1 Sample Clock Source: Internal 44.1 kHz Preferred Sync Reference: ADAT1 AutoSync Reference: None AutoSync Frequency: 0 System Clock Mode: Master System Clock Frequency: 44100 System Clock Locked: No IEC958 input: Coaxial IEC958 output: Coaxial only IEC958 quality: Consumer IEC958 emphasis: off IEC958 NonAudio: off IEC958 sample rate: Error flag set ADAT1: No Lock SPDIF: No Lock Word Clock: No Lock ADAT Sync: No Lock AD Gain : +4 dBu DA Gain : -10 dBV Phones Gain : -12 dB XLR Breakout Cable : no AEB : off (ADAT1 external) modinfo soundcore filename: /lib/modules/2.6.38-8-generic/kernel/sound/soundcore.ko license: GPL author: Alan Cox description: Core sound module srcversion: 982D4ED4F640D0B9C43B130 depends: vermagic: 2.6.38-8-generic SMP mod_unload modversions 686 lsmod | grep snd snd_hdsp 53247 0 snd_pcm 80244 1 snd_hdsp snd_page_alloc 14073 2 snd_hdsp,snd_pcm snd_hwdep 13274 1 snd_hdsp snd_seq_midi 13132 0 snd_rawmidi 25269 2 snd_hdsp,snd_seq_midi snd_seq_midi_event 14475 1 snd_seq_midi snd_seq 51291 2 snd_seq_midi,snd_seq_midi_event snd_timer 28659 2 snd_pcm,snd_seq snd_seq_device 14110 3 snd_seq_midi,snd_rawmidi,snd_seq snd 55295 7 snd_hdsp,snd_pcm,snd_hwdep,snd_rawmidi,snd_seq,snd_timer,snd_seq_device soundcore 12600 1 snd