Ubuntu 20.04 Kernel 5.4.0-84 PCI Card Digital Devices Max M4

[Stefan Bader]

On 13.09.21 12:43, Detlef Bloch wrote:
> Ladies and gentlemen,
> 
> I hope this is the proper team to address the problem I encountered
> lately with my ubuntu based home media server:
> 
> [1.] One line summary of the problem:
> Ubuntu 20.04 Kernel 5.4.0-84-generic x86_64 no longer initializes the internal PCI Card Digital Devices Max M4.
> 
> [2.] Full description of the problem/report:
> 
> After performing an 'apt dist-upgrade' to include Ubuntu 20.04 Kernel 5.4.0-84-generic the program
> Tvheadend 4.3-1978~g7757f0665 no longer recognizes any of the card's 4 adapters.
> 
> lsmod reports the presence of the modules ddbridge, dvbcore and mc, but none of the system devices
> /dev/ddbridge/card0 and /dev/dvb/adapter0, /dev/dvb/adapter1, /dev/dvb/adapter2 and /dev/dvb/adapter3
> have been created.
> 
> Work around: In /etc/default/grub fix the os to use the last working kernel:
> 
> GRUB_DEFAULT="gnulinux-advanced-224ca183-60cf-40df-b7db-3c10f4700f5c>gnulinux-5.4.0-81-generic-advanced-224ca183-60cf-40df-b7db-3c10f4700f5c

Please open a bug report using "ubuntu-bug linux". This will automatically 
collect the logs and hardware information which helps to investigate the issue.

Thanks,
-Stefan
> 
> 
> With kind regards
> 
> Detlef Bloch
> 


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