On Thu, 11 Jan 2018 10:06:12 +0100, Mirza Krak wrote: > > Hi. > > I have a quite simple problem really (simple test-case at least). > > Following describes the test case: > > $ aplay test.wav > > # While the .wav is playing suspend the system > $ systemctl suspend > > # When system is resumed I get the following error on my aplay command > aplay: pcm_write:2030: write error: File descriptor in bad state > > I was expecting for the playback to resume. > > I did some debugging using "aplay" and what I can see that happens > before the EBADFD error is that the "writei_func()" returns a positive > value once which results in a call to "snd_pcm_wait()" and on the next > "writei_func()" call -EBADFD is returned. > > I would expect a -ESTRPIPE error which should then result in that the > PCM stream to be "resumed" (according to documentation at least). I > have tried "forcing" a call to "suspend()" on the first write error in > aplay after system is resumed and it actually works, kinda. The > playback is resumed even-though the "snd_pcm_resume()" call returns an > error. > > I have not worked much with the sound subsystem before and I am having > a hard time following all the call paths to see who/what is to blame > for this behavior. Maybe it expected to work like this? And I do not > know if this is only on my SoC or if this is a generic sound problem. It's no generic issue but specific to platform / SoC driver implementation. Takashi > Information about my system: > > Using a RK3288 SoC (RK3288-FireFly board) with 4.14.13 Linux kernel > (latest stable). > > alsa-lib version 1.1.4.1 > > Playback using I2S > > $ cat /proc/asound/cards > 0 [I2S ]: I2S - I2S > I2S > $ cat /proc/asound/card0/pcm0p/info > card: 0 > device: 0 > subdevice: 0 > stream: PLAYBACK > id: Audio es8328-hifi-analog-0 > name: > subname: subdevice #0 > class: 0 > subclass: 0 > subdevices_count: 1 > subdevices_avail: 1 > > Let me know if there is additional information that I need to provide. > > -- > Med Vänliga Hälsningar / Best Regards > > Mirza Krak > _______________________________________________ > Alsa-devel mailing list > Alsa-devel@xxxxxxxxxxxxxxxx > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
