@vanvugt Thank you for your answer. I tried the kernel versions 5.0.0-13 and 4.3.0-04 as well. For the first one, the same problem occured (sound only after a fresh boot) and the second one couldn't be installed correctly because of missing libraries (a boot was possible, but e.g. the mouse pointer was not moving). I have already tried to reconfigure pulseaudio, to force alsa-audio to reload (it does reload but doesn't change anything). Here is my output of aplay: $ aplay -L default Playback/recording through the PulseAudio sound server null Discard all samples (playback) or generate zero samples (capture) jack JACK Audio Connection Kit pulse PulseAudio Sound Server sysdefault:CARD=PCH HDA Intel PCH, ALC236 Analog Default Audio Device front:CARD=PCH,DEV=0 HDA Intel PCH, ALC236 Analog Front speakers surround21:CARD=PCH,DEV=0 HDA Intel PCH, ALC236 Analog 2.1 Surround output to Front and Subwoofer speakers surround40:CARD=PCH,DEV=0 HDA Intel PCH, ALC236 Analog 4.0 Surround output to Front and Rear speakers surround41:CARD=PCH,DEV=0 HDA Intel PCH, ALC236 Analog 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=PCH,DEV=0 HDA Intel PCH, ALC236 Analog 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=PCH,DEV=0 HDA Intel PCH, ALC236 Analog 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=PCH,DEV=0 HDA Intel PCH, ALC236 Analog 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers hdmi:CARD=PCH,DEV=0 HDA Intel PCH, HDMI 0 HDMI Audio Output hdmi:CARD=PCH,DEV=1 HDA Intel PCH, HDMI 1 HDMI Audio Output hdmi:CARD=PCH,DEV=2 HDA Intel PCH, HDMI 2 HDMI Audio Output hdmi:CARD=PCH,DEV=3 HDA Intel PCH, HDMI 3 HDMI Audio Output hdmi:CARD=PCH,DEV=4 HDA Intel PCH, HDMI 4 HDMI Audio Output dmix:CARD=PCH,DEV=0 HDA Intel PCH, ALC236 Analog Direct sample mixing device dmix:CARD=PCH,DEV=3 HDA Intel PCH, HDMI 0 Direct sample mixing device dmix:CARD=PCH,DEV=7 HDA Intel PCH, HDMI 1 Direct sample mixing device dmix:CARD=PCH,DEV=8 HDA Intel PCH, HDMI 2 Direct sample mixing device dmix:CARD=PCH,DEV=9 HDA Intel PCH, HDMI 3 Direct sample mixing device dmix:CARD=PCH,DEV=10 HDA Intel PCH, HDMI 4 Direct sample mixing device dsnoop:CARD=PCH,DEV=0 HDA Intel PCH, ALC236 Analog Direct sample snooping device dsnoop:CARD=PCH,DEV=3 HDA Intel PCH, HDMI 0 Direct sample snooping device dsnoop:CARD=PCH,DEV=7 HDA Intel PCH, HDMI 1 Direct sample snooping device dsnoop:CARD=PCH,DEV=8 HDA Intel PCH, HDMI 2 Direct sample snooping device dsnoop:CARD=PCH,DEV=9 HDA Intel PCH, HDMI 3 Direct sample snooping device dsnoop:CARD=PCH,DEV=10 HDA Intel PCH, HDMI 4 Direct sample snooping device hw:CARD=PCH,DEV=0 HDA Intel PCH, ALC236 Analog Direct hardware device without any conversions hw:CARD=PCH,DEV=3 HDA Intel PCH, HDMI 0 Direct hardware device without any conversions hw:CARD=PCH,DEV=7 HDA Intel PCH, HDMI 1 Direct hardware device without any conversions hw:CARD=PCH,DEV=8 HDA Intel PCH, HDMI 2 Direct hardware device without any conversions hw:CARD=PCH,DEV=9 HDA Intel PCH, HDMI 3 Direct hardware device without any conversions hw:CARD=PCH,DEV=10 HDA Intel PCH, HDMI 4 Direct hardware device without any conversions plughw:CARD=PCH,DEV=0 HDA Intel PCH, ALC236 Analog Hardware device with all software conversions plughw:CARD=PCH,DEV=3 HDA Intel PCH, HDMI 0 Hardware device with all software conversions plughw:CARD=PCH,DEV=7 HDA Intel PCH, HDMI 1 Hardware device with all software conversions plughw:CARD=PCH,DEV=8 HDA Intel PCH, HDMI 2 Hardware device with all software conversions plughw:CARD=PCH,DEV=9 HDA Intel PCH, HDMI 3 Hardware device with all software conversions plughw:CARD=PCH,DEV=10 HDA Intel PCH, HDMI 4 Hardware device with all software conversions usbstream:CARD=PCH HDA Intel PCH USB Stream Output