Aver M780 ngene firmware no longer creating /dev/dvb

After a sudden restart of my server by a power failure (that my battery backup didn't catch), my tv tuner cards are no longer working. The /dev/dvb is not being automatically created. Everything has been working perfectly fine for years. I have not recently updated, I'm on debian 10 (buster).

dpkg --list | grep linux-imagerc  linux-image-4.19.0-5-amd64  4.19.37-5+deb10u2  amd64  Linux 4.19 for 64-bit PCs (signed)rc  linux-image-4.19.0-6-amd64  4.19.67-2+deb10u2  amd64  Linux 4.19 for 64-bit PCs (signed)rc  linux-image-4.19.0-8-amd64  4.19.98-1+deb10u1  amd64  Linux 4.19 for 64-bit PCs (signed)ii  linux-image-4.19.0-9-amd64  4.19.118-2+deb10u1 amd64  Linux 4.19 for 64-bit PCs (signed)

sudo journalctl --boot | grep -iE "dvb|ngene"kernel: ngene: nGene PCIE bridge driver, Copyright (C) 2005-2007 Micronaskernel: ngene 0000:06:00.0: Found Aver M780 ATSC/QAM-Bkernel: ngene 0000:06:00.0: Device version 1kernel: ngene 0000:06:00.0: firmware: direct-loading firmware ngene_15.fwkernel: ngene 0000:06:00.0: No LGDT330x found!kernel: ngene 0000:03:00.0: Found Aver M780 ATSC/QAM-Bkernel: ngene 0000:03:00.0: Device version 1kernel: ngene 0000:03:00.0: firmware: direct-loading firmware ngene_15.fwkernel: ngene 0000:03:00.0: No LGDT330x found!

lsmod | grep dvbdvb_core 147456 2 lgdt330x,ngene

sudo dmesg | egrep -i '(firmware|atsc|dvb)'[    0.688713] pci 0000:00:00.0: [Firmware Bug]: reg 0x1c: invalid BAR (can't size)[    9.444961] ngene 0000:06:00.0: Found Aver M780 ATSC/QAM-B[    9.479046] ngene 0000:06:00.0: firmware: direct-loading firmware ngene_15.fw[    9.665568] ngene 0000:03:00.0: Found Aver M780 ATSC/QAM-B[    9.665903] ngene 0000:03:00.0: firmware: direct-loading firmware ngene_15.fw

ngene_15.fw, ngene_16.fw, ngene_17.fw and ngene_18.fw are listed in /lib/firmware

I always do a restart if a new kernel image is updated so I don't believe I had a pending update that replaced the kernel so I wouldn't think that a new kernel image dropped support for my ngene firmware.

sudo modprobe lgdt330x and sudo modprobe ngene doesn't do anything. However trying modprobe ngene_15 reports:

sudo modprobe ngene_15modprobe: FATAL: Module ngene_15 not found in directory /lib/modules/4.19.0-9-amd64