twintv-quadhd under debian stretch not found

Hi,
I’m trying to use the quadhd on debian stretch kernel 4.9 but the card is not showing up in dvr beta.
I do have the latest plex version (Version 1.7.3.3937)
the card is showing up under lspci -v

! 04:00.0 Multimedia video controller: Conexant Systems, Inc. CX23885 PCI Video and Audio Decoder (rev 04)
! Subsystem: Hauppauge computer works Inc. CX23885 PCI Video and Audio Decoder
! Flags: bus master, fast devsel, latency 0, IRQ 18
! Memory at f7600000 (64-bit, non-prefetchable) [size=2M]
! Capabilities: [40] Express Endpoint, MSI 00
! Capabilities: [80] Power Management version 2
! Capabilities: [90] Vital Product Data
! Capabilities: [a0] MSI: Enable- Count=1/1 Maskable- 64bit+
! Capabilities: [100] Advanced Error Reporting
! Capabilities: [200] Virtual Channel
! Kernel driver in use: cx23885
! Kernel modules: cx23885
!
! 05:00.0 Multimedia video controller: Conexant Systems, Inc. CX23885 PCI Video and Audio Decoder (rev 04)
! Subsystem: Hauppauge computer works Inc. CX23885 PCI Video and Audio Decoder
! Flags: bus master, fast devsel, latency 0, IRQ 19
! Memory at f7400000 (64-bit, non-prefetchable) [size=2M]
! Capabilities: [40] Express Endpoint, MSI 00
! Capabilities: [80] Power Management version 2
! Capabilities: [90] Vital Product Data
! Capabilities: [a0] MSI: Enable- Count=1/1 Maskable- 64bit+
! Capabilities: [100] Advanced Error Reporting
! Capabilities: [200] Virtual Channel
! Kernel driver in use: cx23885
! Kernel modules: cx23885

as I heared the drivers are included in the kernel since 4.4, aren’t they? So what do I have to do that this card is showing up under DVR (beta)

I found the ppa provided by Hauppauge. But as it looks they supply modified linux kernels (4.10, 4.8 and 4.6). They wont fit with my Kernel 4.9 delivered with debian stretch. Is the source code available so I can compile it myself?

Thanks a lot

Plex don’t use the v4l dvb drivers so you don’t need kernel drivers.

Confirmed in this thread https://forums.plex.tv/discussion/273741/live-tv-or-dvr-why-not-a-standard-like-satip#latest

Tanks for your answere.
So it basically should allready work or what am I supposed to do, to see the card in my plex settings.

I gave it up, to try setup my quadHD. But I tryed to add the device after each update and now, after update 1.9.1… It is showing my devices. It is now searching for channels. Thank you very much for fixing this problem, plex team.