First I must say you, my English is not very good. I'm from Germany and I learned English in school, but this was in 1986. * My notebook: Product Name: SCHENKER_DOCK_15_SDO15L18_SDO15E19; Board Name: Clevo N350TW; Dual-boot: "Linux Mint 20 Ulyana (based on Ubuntu 20.04)" and "Windows 10 1909"; Architecture: x86_64; Kernel release: 5.4.0-40; Audio device: Intel Corporation Cannon Lake PCH cAVS [8086:a348] (rev 10); Subsystem: CLEVO/KAPOK Computer Cannon Lake PCH cAVS [1558:0351]; * Here is the problem: When I boot Linux, the notebook have no sound from speakers and headphones. When I click the speaker-icon in tray, I can only see "Dummy-Output". Sometimes I hear a crack from the speakers. Only when I connect the notebook and the TV with a HDMI-cable, I have sound on TV. When I now click the speaker-icon, I see "HDMI-3". This problem was also with the Live-CD and also with "Linux Mint 19.3 Tricia (based on Ubuntu 18.04)". If I boot "Windows", there are no problems with sound. * Here the ALSA-info file: http://alsa-project.org/db/?f=47ee648ea6d6f98dcd1284b5d9800aa6b7240e33 * Can someone please help me to solve this problem? My Linux skills are average (learning by doing). Thanks in advance for your assistance!
Having the exact same issue. Notebook is also a Clevo N350TW with an Intel i9-9900T. Running Arch Linux on Kernel 5.7.12 HDMI outputs are detected and working, analog parts like speaker and audio jacks are not. aplay -l lists the following: **** List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 8: HDMI 2 [HDMI 2] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 9: HDMI 3 [HDMI 3] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 10: HDMI 4 [HDMI 4] Subdevices: 1/1 Subdevice #0: subdevice #0 Onboard audio jacks are not detected (Mic-In, Onboard Speaker, SPDIF, Stereo out). Here is the alsa-info file: http://alsa-project.org/db/?f=e242868271a02d3a5d9a1a322ca56d3b09043b24 I also booted with probe_only=1 and ran alsa-info: http://alsa-project.org/db/?f=8fb255c91ff25019ee7b5134e77e0a4a0e28d410 I tried playing around with the module options for snd_hda_intel like "model=clevo-p950" which did not help. snd_hda_intel.dmic_detect=0 did not work. Output of sudo dmesg | egrep -i 'audio|snd|sound' [ 0.000000] Command line: initrd=\initramfs-linux.img cryptdevice=UUID=b38685cc-6e56-4f15-9e17-33b866a5badb:r00t root=/dev/mapper/r00t rw snd-intel-dspcfg.dsp_driver=1 [ 0.190266] Kernel command line: initrd=\initramfs-linux.img cryptdevice=UUID=b38685cc-6e56-4f15-9e17-33b866a5badb:r00t root=/dev/mapper/r00t rw snd-intel-dspcfg.dsp_driver=1 [ 0.956971] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio) [ 12.352587] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915]) [ 12.600802] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input14 [ 12.600833] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input15 [ 12.600859] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input16 [ 12.600889] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input17 [ 12.600932] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input18 I'm fine with testing whatever needs to be tested.
Hi Nico and everybody else, I have a new little information about the issue. * If I boot "Windows 10", the sound-chip is identified as "ALC892". I hope "Windows" get it right. * I can't find "ALC892" in "/usr/share/doc/alsa-base/driver/HD-Audio-Models.txt". * Can someone help us please.
Now I wrote a script like this (short form): echo auto > /sys/devices/pci0000\:00/0000\:00\:1f.3/power/control echo 1 > /sys/devices/pci0000\:00/0000\:00\:1f.3/remove echo 1 > /sys/bus/pci/rescan When I boot LINUX the script runs as root in a loop until the ALC892 is recognized. But the ALC892 is only recognized after I hear a crack from the speakers. Sometimes after 5 loops, sometimes after very many loops, sometimes never. Always after a crack. It doesn't matter whether the laptop runs on a battery or a charger. Meanwhile, I believe that the problem has nothing to do with ALSA or PULSEAUDIO. I think there is a problem with the pci scanning in conjunction with ACPI or PCI-Power-Management. Maybe PM-UTILS too. But that's for experts. I am not familiar with kernel drivers.
If you still see this problem, can you please boot with the "efi=debug" kernel parameter and attach the complete dmesg log here?