On Sun, Sep 18, 2016 at 03:37:00AM +0000, Gary Buhrmaster wrote:
> Lastly, the 1975 is more like two devices than one.
> It has both the ATSC and DVB demods on board,
> and likely (although I have no personal experience)
> needs two sets of firmware blobs (one for each
> demod)?

It does come with two firmware blobs:

16382 Mar  2  2014 v4l-cx25840.fw
16384 Jan  5  2015 v4l-pvrusb2-160xxx-01.fw

In kern.log, I do see lines like this:

cx25840 7-0044: loaded v4l-cx25840.fw firmware (16382 bytes)

and lines like this:

pvrusb2: firmware2 upload transfer failure

but nothing specifically naming the file v4l-pvrusb2-160xxx-01.fw.

[Note that I'm happy to help with some kernel hacking, if that's
useful for debugging.]

Thanks,

   - Ian
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