[mythtv-users] mythbackend Start-up issue - possible race with dvb device firmware loading

[Klaas de Waal]

Hi John, Stephen,

On my system, Fedora 33 with the TBS version of the drivers, I get the
following for the MyGIca T230 USB tuner:
dmesg | grep si2157
[81708.931066] si2157 14-0060: found a 'Silicon Labs Si2158-A20'
[81708.931087] si2157 14-0060: downloading firmware from file
'dvb-tuner-si2158-a20-01.fw'
[81710.127330] si2157 14-0060: firmware version: 2.1.9
[81777.542157] si2157 14-0060: found a 'Silicon Labs Si2158-A20'
[81777.542214] si2157 14-0060: downloading firmware from file
'dvb-tuner-si2158-a20-01.fw'
[81778.737773] si2157 14-0060: firmware version: 2.1.9
[81846.110174] si2157 14-0060: found a 'Silicon Labs Si2158-A20'
[81846.110204] si2157 14-0060: downloading firmware from file
'dvb-tuner-si2158-a20-01.fw'
[81847.300054] si2157 14-0060: firmware version: 2.1.9
[81914.474541] si2157 14-0060: found a 'Silicon Labs Si2158-A20'
[81914.474565] si2157 14-0060: downloading firmware from file
'dvb-tuner-si2158-a20-01.fw'
[81915.647009] si2157 14-0060: firmware version: 2.1.9

I have EIT running with a one minute interval, and the "Open DVB Card on
Demand" option checked.
So it looks like that on each "open" the firmware is loaded again.
As said, this is outside the control of mythtv as this is something the
driver itself decides.
On startup the backend currently opens each virtual tuner once, so there
are a lot of these messages at startup if you have configured multirec for
many instances.

Last time I looked into this the firmware was only loaded once but I do not
look into this very often so I do not know when the behavior has changed.

 Klaas.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mythtv.org/pipermail/mythtv-users/attachments/20201119/0a6e33d7/attachment.htm>