@chris-lea: > Update with some new info. I booted into Win10 and noticed that it wasn't > recognizing an audio > device. Googled around a bit and ended up (re)installing the Realtek drivers > largely by following > what I read here:
You need to power-cycle your laptop between Windows<->Linux reboots, that is, turn the laptop off. This is necessary to reset the soundcard. I'm dual-booting Linux and Windows with my kernel still defaulting to HDA mode while Windows defaults to I2S mode. In order to get sound in Linux again after booting into Windows, I need to power off the laptop from Windows. Then power on, boot into Linux and then reboot or even power-cycle again. The same applies for Windows. If you don't have sound, power-cycle the machine at least once. Reinstalling the drivers does not help as it's not a driver issue, it's the hardware not properly resetting after entering either HDA or I2S mode. The only proper fix is to use I2S mode on Linux as well which requires at least Linux kernel 4.8, see [1]. Adrian > [1] https://wiki.archlinux.org/index.php/Dell_XPS_13_(2015)#Audio -- 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 ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
