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![HDMI audio not showing [21.10] - Raspberry Pi - Ubuntu MATE Community](https://ubuntu-mate.community/uploads/default/original/3X/9/e/9ec06bef80adaa83a51097ccda0ccba1fc76eb3b.png "HDMI audio not showing [21.10] - Raspberry Pi - Ubuntu MATE Community")
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Ubuntu Forums
dell - Ubuntu 18.04 Hdmi not detected - Ask Ubuntu
drivers - HDMI not displaying external monitor in Ubuntu 14.04 - Ask Ubuntu
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