Okay okay, after some hours investigating, here are my thoughts: - Still no idea why the audio device was missing at all at the beginning. Re-appeared, no problems since then. - I2S sound is working fine in kernel 4.4. - But the Ubuntu kernel keeps using the CONFIG_ACPI_REV_OVERRIDE_POSSIBLE kernel flag. -> Audio continues to operate in HDA mode, although not necessary. - Arch removed this flag for kernel 4.4 (https://bugs.archlinux.org/task/47710) - Tried to recompile kernel with CONFIG_ACPI_REV_OVERRIDE_POSSIBLE=n, but ran out of space. - Discovered the acpi_rev_override kernel parameter, going to test a bit now if this helps.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1551880 Title: [Dell XPS 13 9343] Audio broken with I2S mode in Ubuntu 16.04 kernel 4.4 (but works with kernel 4.3) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1551880/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
