I'm using Acer Swift SF514-52T (Intel 8th Gen Core i5) on Ubuntu 20.10 - Linux kernel 5.8.
The default configuration has no sound working at all. I believe it uses the SOF driver (I could be wrong) which doesn't support the Kaby Lake platform, as the issues for supporting this platform have been closed ( https://github.com/thesofproject/sof/issues/1899 ). And the proposed workaround to support this platform have been discarded also ( https://github.com/thesofproject/sof/issues/2256 ). Therefore installing the latest version or any version of the SOF driver will not solve the issue. Force enable the HDA driver (snd_hda_intel) in /etc/modprobe.d/alsa- base.conf with options snd-intel-dspcfg dsp_driver=1, the sound output works fine but the internal mic (DMIC) doesn't work. And I believe we're moving to the SOF driver which doesn't support my device. Therefore I don't expect any fix will be done in HDA driver. I tried to use Intel's SST driver as it's the only solution left. I enabled it with options snd-intel-dspcfg dsp_driver=2 but both the sound output and the internal mic (DMIC) don't work. I also report this bug in https://bugzilla.kernel.org/show_bug.cgi?id=201251 Here is my alsa-info (with options snd-intel-dspcfg dsp_driver=2): http ://alsa-project.org/db/?f=db024ae3c924d318bda813f73c73e76df36bbca2 I attached my full dmesg also. ** Bug watch added: github.com/thesofproject/sof/issues #1899 https://github.com/thesofproject/sof/issues/1899 ** Bug watch added: github.com/thesofproject/sof/issues #2256 https://github.com/thesofproject/sof/issues/2256 ** Bug watch added: Linux Kernel Bug Tracker #201251 https://bugzilla.kernel.org/show_bug.cgi?id=201251 ** Attachment added: "dmesg on Acer Swift SF514-52T running Ubuntu 20.10" https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1523100/+attachment/5428164/+files/dmesg_messages -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1523100 Title: Alsa not detecting internal microphone [ALC255] (Realtek) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1523100/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
