volumecontrol does not work on 5.2

[Sebastian.Kutsch at web.de (Sebastian Kutsch)]

Hi,

I have a onboard soundcard with a sis 7012 soundchipset.
I have compiled the kernel with the pcm device-driver and the chipset
gets recogniced as you can see at the dmesg output:

pcm0: <SiS 7012> port 0xd800-0xd87f,0xdc00-0xdcff irq 18 at device 2.7
on pci0 
pcm0: <C-Media Electronics CMI9739 AC97 Codec>

I get sound but can't control the volume. I can turn the volume off or
on, but that all I can do.

Has anyone an Idea what the problem is?

Sebastian