Problems with WinTV-QuadHD since change to Unraid

Server Version#: 1.18.7.2457
Player Version#: 4.22.2
Tuner Make/Model: WinTV QuadHD
lspci: Conexant Systems, Inc. CX23887/8 PCIe Broadcast Audio and Video Decoder with 3D Comb (rev 04)

Hi everyone,

since a few days I’ve changed my server setup from a Proxmox virtualisation server with 2 VMs (FreeNAS, Ubuntu). In Ubuntu I had three docker container with Plex and TVHeadend along with Antennas (TVHproxy) running. The WinTV QuadHD was passthroughed to the Ubuntu VM and everything worked with a few hickups.

Now I changed everything to Unraid and since then the DVR stuff is a mess. Sometimes it works, most of the times not. Nearly the same setup as before: Plex, TVHeadend, Antennas (TVHproxy). To get the card running on Unraid I used UnraidDVB.
Starting a stream in Plex leads to Sender konnte nicht eingestellt werden. Bitte Empfänger oder Antenne prüfen.
or in english:
The station could not be tuned in. Please check receiver or antenna. (Google translate)

Unraid Informations
Linux Kernel Version:	4.19.98
DVB Version:	LibreELEC
Driver Version:	1.4.0
DVB Kernel:	Detected
DVB Adapter Drivers:	Detected
DVB Adapter 0:	Silicon Labs Si2168
DVB Adapter 1:	Silicon Labs Si2168
DVB Adapter 2:	Silicon Labs Si2168
DVB Adapter 3:	Silicon Labs Si2168```
Syslog
Mar  6 21:12:38 Unraid kernel: si2168 6-0066: downloading firmware from file 'dvb-demod-si2168-b40-01.fw'
Mar  6 21:12:39 Unraid kernel: si2168 6-0066: firmware version: B 4.0.25
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]: mpeg risc op code error
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]: TS2 C - dma channel status dump
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   cmds: init risc lo   : 0xff1f9000
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   cmds: init risc hi   : 0x00000000
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   cmds: cdt base       : 0x000108d0
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   cmds: cdt size       : 0x0000000a
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   cmds: iq base        : 0x00010670
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   cmds: iq size        : 0x00000010
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   cmds: risc pc lo     : 0xff1f9048
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   cmds: risc pc hi     : 0x00000000
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   cmds: iq wr ptr      : 0x000041a4
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   cmds: iq rd ptr      : 0x000041a8
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   cmds: cdt current    : 0x000108e8
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   cmds: pci target lo  : 0xff6f8000
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   cmds: pci target hi  : 0x00000000
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   cmds: line / byte    : 0x00000000
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   risc0: 
Mar  6 21:12:40 Unraid kernel: 0x1c0002f0 [ write sol eol count=752 ]
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   risc1: 
Mar  6 21:12:40 Unraid kernel: 0xff6f8000 [ INVALID sol eol irq2 irq1 22 21 19 18 cnt1 cnt0 resync count=0 ]
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   risc2: 
Mar  6 21:12:40 Unraid kernel: 0x00000000 [ INVALID count=0 ]
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   risc3: 
Mar  6 21:12:40 Unraid kernel: 0x1c0002f0 [ write sol eol count=752 ]
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   (0x00010670) iq 0: 
Mar  6 21:12:40 Unraid kernel: 0xff6f8000 [ INVALID sol eol irq2 irq1 22 21 19 18 cnt1 cnt0 resync count=0 ]
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   (0x00010674) iq 1: 
Mar  6 21:12:40 Unraid kernel: 0x00000000 [ INVALID count=0 ]
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   (0x00010678) iq 2: 
Mar  6 21:12:40 Unraid kernel: 0x1c0002f0 [ write sol eol count=752 ]
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   iq 3: 0xff6f82f0 [ arg #1 ]
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   iq 4: 0x00000000 [ arg #2 ]
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   (0x00010684) iq 5: 
Mar  6 21:12:40 Unraid kernel: 0x1c0002f0 [ write sol eol count=752 ]
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   iq 6: 0xff6f8bc0 [ arg #1 ]
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   iq 7: 0x00000000 [ arg #2 ]
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   (0x00010690) iq 8: 
Mar  6 21:12:40 Unraid kernel: 0x70000000 [ jump count=0 ]
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   iq 9: 0x1c0002f0 [ arg #1 ]
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   iq a: 0xff6f8000 [ arg #2 ]
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   (0x0001069c) iq b: 
Mar  6 21:12:40 Unraid kernel: 0x00000000 [ INVALID count=0 ]
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   (0x000106a0) iq c: 
Mar  6 21:12:40 Unraid kernel: 0x1c0002f0 [ write sol eol count=752 ]
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   iq d: 0xff6f82f0 [ arg #1 ]
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   iq e: 0x00000000 [ arg #2 ]
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   (0x000106ac) iq f: 
Mar  6 21:12:40 Unraid kernel: 0x1c0002f0 [ write sol eol count=752 ]
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   iq 10: 0x679edc4d [ arg #1 ]
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   iq 11: 0x6ccf8524 [ arg #2 ]
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]: fifo: 0x00006000 -> 0x7000
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]: ctrl: 0x00010670 -> 0x106d0
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   ptr1_reg: 0x00006420
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   ptr2_reg: 0x000108e8
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   cnt1_reg: 0x00000013
Mar  6 21:12:40 Unraid kernel: cx23885: cx23885[1]:   cnt2_reg: 0x00000007
Mar  6 21:12:45 Unraid kernel: si2168 6-0064: downloading firmware from file 'dvb-demod-si2168-b40-01.fw'
Mar  6 21:12:46 Unraid kernel: si2168 6-0064: firmware version: B 4.0.25
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]: mpeg risc op code error
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]: TS1 B - dma channel status dump
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   cmds: init risc lo   : 0xffca3000
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   cmds: init risc hi   : 0x00000000
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   cmds: cdt base       : 0x00010870
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   cmds: cdt size       : 0x0000000a
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   cmds: iq base        : 0x00010630
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   cmds: iq size        : 0x00000010
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   cmds: risc pc lo     : 0xffca3048
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   cmds: risc pc hi     : 0x00000000
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   cmds: iq wr ptr      : 0x00004194
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   cmds: iq rd ptr      : 0x00004198
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   cmds: cdt current    : 0x000108b8
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   cmds: pci target lo  : 0xfe5c0000
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   cmds: pci target hi  : 0x00000000
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   cmds: line / byte    : 0x00000000
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   risc0: 
Mar  6 21:12:47 Unraid kernel: 0x1c0002f0 [ write sol eol count=752 ]
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   risc1: 
Mar  6 21:12:47 Unraid kernel: 0xfe5c0000 [ INVALID sol eol irq2 22 20 19 18 count=0 ]
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   risc2: 
Mar  6 21:12:47 Unraid kernel: 0x00000000 [ INVALID count=0 ]
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   risc3: 
Mar  6 21:12:47 Unraid kernel: 0x1c0002f0 [ write sol eol count=752 ]
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   (0x00010630) iq 0: 
Mar  6 21:12:47 Unraid kernel: 0xfe5c0000 [ INVALID sol eol irq2 22 20 19 18 count=0 ]
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   (0x00010634) iq 1: 
Mar  6 21:12:47 Unraid kernel: 0x00000000 [ INVALID count=0 ]
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   (0x00010638) iq 2: 
Mar  6 21:12:47 Unraid kernel: 0x1c0002f0 [ write sol eol count=752 ]
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   iq 3: 0xfe5c02f0 [ arg #1 ]
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   iq 4: 0x00000000 [ arg #2 ]
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   (0x00010644) iq 5: 
Mar  6 21:12:47 Unraid kernel: 0x1c0002f0 [ write sol eol count=752 ]
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   iq 6: 0xfe5c0bc0 [ arg #1 ]
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   iq 7: 0x00000000 [ arg #2 ]
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   (0x00010650) iq 8: 
Mar  6 21:12:47 Unraid kernel: 0x70000000 [ jump count=0 ]
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   iq 9: 0x1c0002f0 [ arg #1 ]
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   iq a: 0xfe5c0000 [ arg #2 ]
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   (0x0001065c) iq b: 
Mar  6 21:12:47 Unraid kernel: 0x00000000 [ INVALID count=0 ]
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   (0x00010660) iq c: 
Mar  6 21:12:47 Unraid kernel: 0x1c0002f0 [ write sol eol count=752 ]
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   iq d: 0xfe5c02f0 [ arg #1 ]
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   iq e: 0x00000000 [ arg #2 ]
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   (0x0001066c) iq f: 
Mar  6 21:12:47 Unraid kernel: 0x1c0002f0 [ write sol eol count=752 ]
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   iq 10: 0xff6f8000 [ arg #1 ]
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   iq 11: 0x00000000 [ arg #2 ]
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]: fifo: 0x00005000 -> 0x6000
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]: ctrl: 0x00010630 -> 0x10690
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   ptr1_reg: 0x00005d80
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   ptr2_reg: 0x000108b8
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   cnt1_reg: 0x0000001c
Mar  6 21:12:47 Unraid kernel: cx23885: cx23885[1]:   cnt2_reg: 0x00000001```

Does someone know what I can do to get it back to working?

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