Hi Takashi, Than you for your help. > > Switching to polling mode is OK and mostly harmless. But single_cmd > is not. There is a VERY big difference between them. Ok. > > Probably related is the > > fact that I have never seen an IRQ 22. > > > > from proc/interrupts : > > > > 22: 0 0 IO-APIC-fasteoi uhci_hcd:usb6, HDA Intel > > Hum, then it must be an interrupt thing. > Ask rather ACPI guys. > Well, you must be right. Using the irqpoll boot option, the sound is correct, and I see four IRQ 20 per second (and none when there is no sound). 1) Can you confirm an expected IRQ every 250ms ? The APIC routes PCI INT B to IRQ 22, and alsa is expecting IRQ 22. Now I have to get alsa to expect IRQ 20 or get APIC to route an appropriate PCI INT to IRQ 22.... 2) Now I get a warning "hda-intel: IRQ timing workaround is activated for card #0. Suggest a bigger bdl_pos_adj." What is the range of values I should try ? Regards Jean-Pierre _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
