> > >> 6. Compiled and installed Linux kernel 4.10 rc8 > > >> > > >> -> Microphone mute led does not work > > > > > > This is even more confusing. Between 4.9, which you claim works fine, > > > and 4.10-rc8, which you claim does not work, I can see no changes to > > > either drivers/leds/dell-led.c or sound/pci/hda/dell_wmi_helper.c. > > > Kernel configuration issue? > > > > I was surprised too, and I compiled it twice and installed on both > > Ubuntu 16.04 and 16.10. > > > > I would guess it is config too. On 4.9, it was using Ubuntu default. > > On 4.10rc8, I am pretty much using the instruction on > > https://wiki.ubuntu.com/KernelTeam/GitKernelBuild. The .config is > > available @ http://paste.ubuntu.com/24001113/ > > In Patch 6/6 is: Kconfig option is renamed from > CONFIG_LEDS_DELL_NETBOOKS to CONFIG_DELL_WMI_LED. > So you need to update your config for testing. I also thought about this, but CONFIG_DELL_WMI_LED is only needed to support the Dell Activity LED (present in the Dell Latitude 2100 netbook). Meanwhile, Alex is only testing the microphone mute LED, which requires CONFIG_DELL_LAPTOP to be enabled. The cover letter for this patch series provides a more thorough explanation. -- Best regards, Michał Kępień
