Hi there, my soundcard works only in 50% of the boots. ❯ hwinfo --sound 19: PCI a00.0: 0401 Multimedia audio controller [Created at pci.386] Unique ID: cuhJ.Rgto84+swI4 Parent ID: x1VA.RTygCxq_rO0 SysFS ID: /devices/pci0000:00/0000:00:1c.6/0000:09:00.0/0000:0a:00.0 SysFS BusID: 0000:0a:00.0 Hardware Class: sound Model: "Creative SB1550 Audigy 5/Rx" Vendor: pci 0x1102 "Creative Labs" Device: pci 0x0008 "CA0108/CA10300 [Sound Blaster Audigy Series]" SubVendor: pci 0x1102 "Creative Labs" SubDevice: pci 0x1024 "SB1550 Audigy 5/Rx" I/O Ports: 0xd000-0xd03f (rw) IRQ: 18 (no events) Module Alias: "pci:v00001102d00000008sv00001102sd00001024bc04sc01i00" Driver Info #0: Driver Status: snd_emu10k1 is active Driver Activation Cmd: "modprobe snd_emu10k1" Config Status: cfg=new, avail=yes, need=no, active=unknown Attached to: #10 (PCI bridge) If the card is recognised well the card works out of the box, but in half of all boots the card is not recognised. For some reasons the card didn't get an interrupt and then the card is not available in /proc/asound/cards working state: File: /proc/interrupts ───────┼─────────────────────────────────────────────────────────────── ─────────────────────────────────────────────────────────────────────── ──────────────────────────── 1 │ CPU0 CPU1 CPU2 CPU3 2 │ 0: 8 0 0 0 IO-APIC 2-edge timer 3 │ 8: 0 0 0 1 IO-APIC 8-edge rtc0 4 │ 9: 0 0 0 0 IO-APIC 9-fasteoi acpi 5 │ 16: 0 0 4 0 IO-APIC 16-fasteoi i801_smbus 6 │ 18: 0 21 0 0 IO-APIC 18-fasteoi snd_emu10k1 In the not working state the cards get no interrupt, but the interrupt above ( 18) in not given to another card or something 442368-edge aerdrv journald meldet dann: ✦ ❯ journalctl -b -g snd_emu10k1 -- Logs begin at Mon 2020-06-29 17:38:04 CEST, end at Mon 2020-11-02 20:30:00 CET. -- Nov 02 18:03:14 sysiphus kernel: snd_emu10k1 0000:0a:00.0: enabling device (0000 -> 0001) Nov 02 18:03:14 sysiphus kernel: snd_emu10k1 0000:0a:00.0: Audigy2 value: Special config. Nov 02 18:03:15 sysiphus kernel: snd_emu10k1 0000:0a:00.0: AC'97 0 does not respond - RESET Nov 02 18:03:15 sysiphus kernel: snd_emu10k1 0000:0a:00.0: AC'97 0 access is not valid [0x0], removing mixer. Nov 02 18:03:15 sysiphus kernel: snd_emu10k1: probe of 0000:0a:00.0 failed with error -5 Debian Sid ✦ ❯ uname -a Linux sysiphus 5.9.0-2-amd64 #1 SMP Debian 5.9.6-1 (2020-11-08) x86_64 GNU/Linux Board is an Asus PRIME Z270-K with bios 1207. I have tested the card in another pci port and also have changed the card to a new one, both without success. Can you please help me to debug this further? When you need additional information, please ask and I will provide it. Grüße/ regards Micha _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user