Hi,
Takashi Iwai wrote:
Finally there is some misconception in the aureon & prodigy drivers: the codec chip does not have a Master control as it appears at the mixer. Instead the master control just updates the 8 volume controls of the individual DAC at the same time. Probably the best way is to add a virtual master control (ie that we update the volumes of the dac with <master attenuation> + <specific channel attenuation> ).
well, such a thing should be done on user-space rather than on
kernel. let's postpone this until the new highlevel mixer functions
become available.
That's fine if it can be done in user space but this creates a problem with the mixer right now. Changing the master volume does not update all the DAC volumes as it should and you can be in the situation where Master is100% and all other volumes are 0, yet the playback is done in maximum volume at all channels. Maybe the driver should update all channel volumes on a master update.
As I wrote some days ago, the default buffer/period rates that alsarecord uses at 44.1KHz and lower sampling , locks hard the kernel. Have no idea what is it/how to fix it whatsoever.
hmm, could be the mismatch of cristal rate?
i don't find out the critical path in the driver yet.
No idea about that and how to debug it.. The driver still locks the kernel using arecord and default parameters at 44.1Khz but not at higher sample rates. I attached the PCM setup that locks the machine hard. It seems that the driver manages to record a few periods and then locks. Maybe the reason is the funny period buffer sizes (5513??) that appear at the pcm setup. As I understand the situation it is a (minor) problem with the ice1724 driver.
Apostolis
Recording WAVE '/dev/null' : Signed 32 bit Little Endian, Rate 44000 Hz, Stereo Hardware PCM card 0 'Audiotrak Prodigy 7.1' device 0 subdevice 0
Its setup is: stream : CAPTURE access : RW_INTERLEAVED format : S32_LE subformat : STD channels : 2 rate : 44100 exact rate : 44100 (44100/1) msbits : 24 buffer_size : 22050 period_size : 5513 period_time : 125011 tick_time : 10000 tstamp_mode : NONE period_step : 1 sleep_min : 0 avail_min : 5513 xfer_align : 5513 start_threshold : 1 stop_threshold : 22050 silence_threshold: 0 silence_size : 0 boundary : 1445068800 Aborted by signal Interrupt...
