I asked Rafael J. Wysocki about it: Hi,
> My kernel has ACPI_REV_OVERRIDE_POSSIBLE=y, can I set acpi_rev_override=n in > the boot parameters to use I2S or do I have to recompile with > ACPI_REV_OVERRIDE_POSSIBLE=n? > > I'm using latest bios A05. > > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=18d78b64fddc11eb336f01e46ad3303a3f55d039 > > > You need to recompile it with the config option unset. acpi_rev_override is for systems other than the XPS that may need the override. Now that I'm thinking about it, though, it may be useful to ignore the XPS' blacklisting for acpi_rev_override=n. May cut a patch for that ... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1413446 Title: Audio broken on 2015 XPS 13 (9343) in I2S mode in Ubuntu 14.10/15.04 To manage notifications about this bug go to: https://bugs.launchpad.net/dell-sputnik/+bug/1413446/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs