Hey, I'm trying to resolve teething issues on a new motherboard, Sound plays but I can't configure it with alsamixer, I need to boost the gain before I have to solder together a +6db line amp... Alsamixer dies with following when I try to configure "card 2" tg@tortoise ~ $ alsamixer cannot load mixer controls: Broken pipe atg@tortoise ~ $ [ 6.147319] usb 7-5: New USB device found, idVendor=0db0, idProduct=0d64, bcdDevice= 0.05 [ 6.147321] usb 7-5: New USB device strings: Mfr=3, Product=1, SerialNumber=0 [ 6.147322] usb 7-5: Product: USB Audio [ 6.147323] usb 7-5: Manufacturer: Generic [ 6.238941] input: Generic USB Audio Consumer Control as /devices/pci0000:40/0000:40:01.1/0000:41:00.0/0000:42:08.0/0000:47:00.1/usb7/7-5/7-5:1.7/0003:0DB0:0D64.0004/input/input14 [ 6.290514] input: Generic USB Audio as /devices/pci0000:40/0000:40:01.1/0000:41:00.0/0000:42:08.0/0000:47:00.1/usb7/7-5/7-5:1.7/0003:0DB0:0D64.0004/input/input15 [ 6.290572] hid-generic 0003:0DB0:0D64.0004: input,hiddev97,hidraw3: USB HID v1.11 Device [Generic USB Audio] on usb-0000:47:00.1-5/input7 [ 6.404050] usb 7-6: new full-speed USB device number 5 using xhci_hcd [ 6.551654] usb 7-6: New USB device found, idVendor=1462, idProduct=7c59, bcdDevice= 0.01 [ 6.551655] usb 7-6: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 6.551656] usb 7-6: Product: MYSTIC LIGHT [ 6.551657] usb 7-6: Manufacturer: MSI [ 6.551657] usb 7-6: SerialNumber: A02019092607 [ 3.599965] snd_hda_intel 0000:21:00.1: enabling device (0000 -> 0002) [ 3.600029] snd_hda_intel 0000:21:00.1: Disabling MSI [ 3.600049] snd_hda_intel 0000:23:00.4: enabling device (0000 -> 0002) [ 3.603250] snd_hda_intel 0000:23:00.4: no codecs found! ############## atg@tortoise /proc/asound $ cat cards 0 [NVidia ]: HDA-Intel - HDA NVidia HDA NVidia at 0xe1080000 irq 109 2 [Audio ]: USB-Audio - USB Audio Generic USB Audio at usb-0000:47:00.1-5, high speed atg@tortoise /proc/asound $ ############# this might be related: [315902.131161] ------------[ cut here ]------------ [315902.131167] WARNING: CPU: 22 PID: 5361 at kernel/sched/cputime.c:1075 kcpustat_cpu_fetch+0x1b5/0x1d0 [315902.131167] Modules linked in: nvidia_modeset(PO) snd_usb_audio snd_usbmidi_lib snd_rawmidi snd_seq_device snd_hda_codec_hdmi nvidia(PO) lm78 snd_hda_intel hwmon_vid snd_intel_dspcfg snd_hda_codec snd_hwdep snd_hda_core snd_pcm snd_timer snd nvidia_drm(PO) [315902.131175] CPU: 22 PID: 5361 Comm: xosview Tainted: P O 5.5.8 #6 [315902.131176] Hardware name: Micro-Star International Co., Ltd. MS-7C59/Creator TRX40 (MS-7C59), BIOS 1.40 03/20/2020 [315902.131178] RIP: 0010:kcpustat_cpu_fetch+0x1b5/0x1d0 [315902.131179] Code: 01 47 08 eb 93 49 01 07 eb 8e f3 90 e9 d0 fe ff ff 49 01 4f 40 48 8b 8b f0 04 00 00 49 03 0f 48 01 c8 49 89 07 e9 6e ff ff ff <0f> 0b e9 3f ff ff ff b8 f5 ff ff ff e9 6c ff ff ff 66 2e 0f 1f 84 [315902.131179] RSP: 0018:ffffc90000edbcf0 EFLAGS: 00010297 [315902.131180] RAX: 0000000000000000 RBX: ffff888a73e64c80 RCX: 0000000000000000 [315902.131181] RDX: 0000000000000078 RSI: 0000000000000000 RDI: fffffff86dc0735f [315902.131181] RBP: ffff8897deb58120 R08: 0000000000000002 R09: 000000f6329535da [315902.131182] R10: 0000003fe88e565a R11: 00000000000003ad R12: ffff8897deb69880 [315902.131182] R13: 000000000000002d R14: 0000000000369620 R15: ffffc90000edbdc8 [315902.131183] FS: 00007f3912827740(0000) GS:ffff8897de580000(0000) knlGS:0000000000000000 [315902.131184] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [315902.131184] CR2: 00007f66c888f000 CR3: 00000017c3c80000 CR4: 0000000000340ee0 [315902.131185] Call Trace: [315902.131189] show_stat+0x36a/0x6e0 [315902.131191] seq_read+0xc7/0x400 [315902.131193] proc_reg_read+0x37/0x60 [315902.131194] vfs_read+0xc6/0x150 [315902.131195] ksys_read+0x6b/0x100 [315902.131196] do_syscall_64+0x50/0x1a0 [315902.131199] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [315902.131201] RIP: 0033:0x7f391299ad8e [315902.131201] Code: c0 e9 c6 fe ff ff 48 8d 3d df 6c 0a 00 50 e8 09 19 02 00 66 0f 1f 84 00 00 00 00 00 64 8b 04 25 18 00 00 00 85 c0 75 14 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 66 0f 1f 84 00 00 00 00 00 48 83 ec 28 [315902.131202] RSP: 002b:00007ffec588f908 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [315902.131203] RAX: ffffffffffffffda RBX: 0000000000001fff RCX: 00007f391299ad8e [315902.131203] RDX: 0000000000001fff RSI: 000055e681f603f0 RDI: 0000000000000004 [315902.131204] RBP: 000055e681f603f0 R08: 0000000000000000 R09: 000055e681f603f0 [315902.131204] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffec588fa60 [315902.131205] R13: 00007ffec588fb18 R14: 0000000000002000 R15: 00007ffec588faa0 [315902.131206] ---[ end trace a021214fabf4c563 ]--- [347550.233647] usb 7-5: cannot get ctl value: req = 0x83, wValue = 0xc00, wIndex = 0x1300, type = 4 [347550.233649] usb 7-5: 19:0: cannot get min/max values for control 12 (id 19) [347550.234138] usb 7-5: cannot get ctl value: req = 0x81, wValue = 0xc00, wIndex = 0x1300, type = 4 -- The vaccine is a LIE. 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