Dell Latitude C610 Sound Driver

Mine is a Dell Inspiron 1525. I tried all the solutions listed here on askubuntu.com and all over the web but of no use and finally to find that it is a bug in Ubuntu 20.04 LTS/kernel-5.4 (Focal kernel) where the internal sound card is not detected. The driver soc-skl is disabled bydefault from kernel-5.4. Kernels 5.5, 5.6 all disabled this driver. Read the bug reports here and here.

Dell Latitude C610 Sound Driver

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I had this problem and tried everything else. For me the problem was built-in front audio in a desktop: it stopped working after a reboot. Running aplay -l said it saw no cards, but lspci -v reported an Intel Corporation C610/X99 series chipset HD Audio Controller. Its output didn't include any lines for Kernel modules. Googling told me that other people were using snd_hda_intel as the driver, but lsmod grep snd gave no results. I didn't even have a /proc/asound directory; it was just missing. 041b061a72