Hi, I have never seen this. It's probably a hardware level bug in the AD1988B codec.
Best regards, Hannu ---- 29.11.2010 6.54, o...@lilltiger.se wrote: > > When calling: > > ioctl(device_, SNDCTL_MIX_WRITE, &vr); > > to fast the device will act up but not reporting any errors, atleast > when changing the volume. > The result is that the values written becomes random (often 0, but seen > other values as well). > > This is realy bad for GUI apps using slider to change the values as > they will spam writes extreamly fast and this will mess upp the values. > > > ossinfo: > > Version info: OSS 4.2 (b 2002/200911201634) (0x00040100) OSS_HG > Hg revision: changeset: 874:3c6677155802, tag: tip, date: Sat Nov 07 > 10:17:46 2009 +0200, summary: Changed build ID to v4.2-build2002 > Platform: Linux/x86_64 2.6.35-gentoo-r1 #1 SMP Thu Aug 26 04:04:44 CEST > 2010 (orion) > > Number of audio devices: 12 > Number of audio engines: 17 > Number of MIDI devices: 0 > Number of mixer devices: 2 > > > Device objects > 0: osscore0 OSS core services > 1: oss_hdaudio0 Intel HD Audio interrupts=1132412466 (1132412466) > HD Audio controller Intel HD Audio > Vendor ID 0x8086293e > Subvendor ID 0x10438277 > Codec 0: AD1988B (0x11d4198b/0x1043829c) > 2: oss_usb0 USB audio core services > 3: usb046d08ad-0 USB sound device > 4: usb046d08ad-1 USB sound device > > MIDI devices (/dev/midi*) > > Mixer devices > 0: High Definition Audio AD1988B (Mixer 0 of device object 1) > 1: USB sound device (Mixer 0 of device object 3) > > Audio devices > HD Audio play front /dev/oss/oss_hdaudio0/pcm0 (device > index 0) > HD Audio play center/LFE /dev/oss/oss_hdaudio0/pcm1 (device > index 1) > HD Audio play rear /dev/oss/oss_hdaudio0/pcm2 (device > index 2) > HD Audio play side /dev/oss/oss_hdaudio0/pcm3 (device > index 3) > HD Audio play headphone /dev/oss/oss_hdaudio0/pcm4 (device > index 4) > HD Audio play spdifout-mix /dev/oss/oss_hdaudio0/spdout0 > (device index 5) > HD Audio rec rec1-src /dev/oss/oss_hdaudio0/pcmin0 (device > index 6) > HD Audio rec rec2-src /dev/oss/oss_hdaudio0/pcmin1 (device > index 7) > HD Audio rec rec3-src /dev/oss/oss_hdaudio0/pcmin2 (device > index 8) > HD Audio rec spdif-in /dev/oss/oss_hdaudio0/spdin0 (device > index 9) > HD Audio play front (vmix) loopback record /dev/oss/oss_hdaudio0/loop0 > (device index 10) > USB sound device rec /dev/oss/usb046d08ad-1/pcmin0 > (device index 11) > > Nodes > /dev/dsp -> /dev/oss/oss_hdaudio0/pcm0 > /dev/dsp_in -> /dev/oss/oss_hdaudio0/pcm0 > /dev/dsp_out -> /dev/oss/oss_hdaudio0/pcm0 > /dev/dsp_ac3 -> /dev/oss/oss_hdaudio0/spdout0 > /dev/dsp_mmap -> /dev/oss/oss_hdaudio0/pcm0 > /dev/dsp_multich -> /dev/oss/oss_hdaudio0/pcm0 > > _______________________________________________ > oss-devel mailing list > oss-devel@mailman.opensound.com > http://mailman.opensound.com/mailman/listinfo/oss-devel _______________________________________________ oss-devel mailing list oss-devel@mailman.opensound.com http://mailman.opensound.com/mailman/listinfo/oss-devel
