ACK / APPLIED[D]: [SRU][B/OEM-B/C/D/unstable][PATCH 0/3] line-out on the Dell dock station can't work

Seth Forshee seth.forshee at
Wed Dec 5 14:10:27 UTC 2018

On Tue, Dec 04, 2018 at 02:30:05PM +0800, Hui Wang wrote:
> BugLink:
> The 0001-xxx.patch and 0002-xxx.patch are already in the kernel-v4.18, so these
> two patches are only for Bionic and oem-bionic.
> The 0003-xxx.patch is in the kernel-v4.20-rc5, it is for B/OEM-B/C/D/unstable
> [Impact]
> On the Dell thunderbolt docs stations (WD15 and WD19), there are two playback
> devices, one is headphone, the other is line-out, but there is no UCM for
> these docks yet, so the pluseaudio only can handle the 1st playback device,
> need us to add the UCM for them, before adding UCM, we need to set the
> longname of the sound card in the linux kernel.
> [Fix]
> Cherry-picked 3 upstream patches, these patches add the longname of the sound
> card for the dock station.
> [Test Case]
> Open the gnome-sound-setting, we can choose headphone-usb and lineout-usb from
> UI, and play sound via these devices
> [Regression Potential]
> Very low, these patches come from upstream, and the change is only specific
> to WD15 and WD19 dock station.

Striaghtforward upstream cherry picks, impact limited to specific

Acked-by: Seth Forshee <seth.forshee at>

Applied to disco/master-next, thanks!

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