I have a Focusrite Scarlett 2i2 second generation USB card. The manufacturer doesn't supply a Linux driver. It works well right out of the box with Ubuntu Gnome 17.04, but stops after few minutes of playing sound. The card is ok, works well under Windows.
I checked out this article: Focusrite Scarlett 2i2 Flawlessly Working on Ubuntu with Jack
But I don't hear any difference after using Jack. Sound comes back in two cases, when I reboot the OS or when I unplug and plug the card again. It seems to me like the OS is disabling this device after a while convinced that it's not in use or was unplugged.
It's not power related. USB is still working. I see glowing diode on card's front pannel.
Can anyone help me with this issue?
Edit:
:~$ lspci -nnk | grep -A2 Audio
00:1b.0 Audio device [0403]: Intel Corporation 5 Series/3400 Series
Chipset High Definition Audio [8086:3b56] (rev 06)
DeviceName: Onboard Audio
Subsystem: Samsung Electronics Co Ltd R730 Laptop [144d:c06a]
Kernel driver in use: snd_hda_intel --
01:00.1 Audio device [0403]: NVIDIA Corporation GT216 HDMI Audio Controller [10de:0be2] (rev a1)
Subsystem: Samsung Electronics Co Ltd GT216 HDMI Audio Controller [144d:c06a]
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
$ aplay -l
**** Lista PLAYBACK urządzeń ****
karta 0: MID [HDA Intel MID], urządzenie 0: ALC269 Analog [ALC269 Analog]
Urządzenia podrzędne: 1/1
Urządzenie podrzędne #0: subdevice #0
karta 1: NVidia [HDA NVidia], urządzenie 3: HDMI 0 [HDMI 0]
Urządzenia podrzędne: 1/1
Urządzenie podrzędne #0: subdevice #0
karta 1: NVidia [HDA NVidia], urządzenie 7: HDMI 0 [HDMI 0]
Urządzenia podrzędne: 1/1
Urządzenie podrzędne #0: subdevice #0
karta 1: NVidia [HDA NVidia], urządzenie 8: HDMI 0 [HDMI 0]
Urządzenia podrzędne: 1/1
Urządzenie podrzędne #0: subdevice #0
karta 1: NVidia [HDA NVidia], urządzenie 9: HDMI 0 [HDMI 0]
Urządzenia podrzędne: 1/1
Urządzenie podrzędne #0: subdevice #0
karta 2: USB [Scarlett 2i2 USB], urządzenie 0: USB Audio [USB Audio]
Urządzenia podrzędne: 1/1
Urządzenie podrzędne #0: subdevice #0
$ pactl list short sinks
0 alsa_output.pci-0000_00_1b.0.analog-stereo module-alsa-card.c s16le 2 k 44100 Hz SUSPENDED
1 alsa_output.usb-Focusrite_Scarlett_2i2_USB-00.analog-stereo module-alsa-card.c s32le 2 k 48000 Hz SUSPENDED
And yes, card is selected, is not muted, sound is being produced for a minute or so while playing from youtube or spotify. Then stops.
