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No sound on Lenovo Flex 5 13IML05 Chromebook w/ Ubuntu 21.04

cn flag

After a fair bit of hassle getting ChromeOS off my new Chromebook, and replacing it with Ubuntu, most everything works great but I don't have any sound. It seems my sound card (or the integrated sound chip) is being detected, but drivers must not be working properly. At first all I saw as output options in the sound settings was "Dummy Output" but after trying a bunch of fixes (none of which work), it now reads "HDMI/Display Port - Bult-in Audio". It still does not play any sound at all.

    $ lspci -v | grep -A7 -i "audio"
00:1f.3 Multimedia audio controller: Intel Corporation Comet Lake PCH-LP cAVS
    DeviceName: Multimedia audio controller
    Subsystem: Intel Corporation Comet Lake PCH-LP cAVS
    Flags: bus master, fast devsel, latency 64, IRQ 16
    Memory at 9f914000 (64-bit, non-prefetchable) [size=16K]
    Memory at 9f800000 (64-bit, non-prefetchable) [size=1M]
    Capabilities: <access denied>
    Kernel driver in use: snd_hda_intel
    Kernel modules: snd_hda_intel, snd_sof_pci

Let me know if there's anything I can do to give more info. I'm a relative newbie at Ubuntu and Linux in general.

Olivier Audet avatar
cn flag
Actually, it seems like logging with Xorg gives me full functionality... except my laptop touchpad isn't detected for some reason, and with my Bluetooth mouse not automatically connecting, I didn't have any kind of pointing device. After pairing my Bluetooth mouse through the terminal, I don't have any issues aside from the touchpad. But I still don't get it and would like to log in normally through Wayland.
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