[mythtvnz] DVB drivers location and .zst compression

[Paul]

On 2025-05-21 14:34, Curtis Walker wrote:
> I had an issue with the saa7164 firmware in 2011....maybe some of what 
> worked for me back then will work for you now?
> https://bbs.archlinux.org/viewtopic.php?id=126229
>
> I run Arch linux, latest updates & kernel (6.14.6), with no such 
> issues, thankfully.
>
> Good luck!
>
> On Wed, 21 May 2025 at 14:28, Paul <paulgir at gmail.com> wrote:
>
>
>     On 2025-05-21 13:55, Stephen Worthington wrote:
>     > On Wed, 21 May 2025 10:54:09 +1200, you wrote:
>     >
>     >> On 2025-05-21 10:41, Curtis Walker wrote:
>     >>> On Wed, 21 May 2025 at 10:19, Paul <paulgir at gmail.com> wrote:
>     >>>
>     >>>      Hi
>     >>>
>     >>>      I have been seeing minor artifacts (pixellation) , mainly
>     after
>     >>>      skipping forward during playback.
>     >>>
>     >>>      Hauppauge_WinTV-HVR-2200Back in my installation of MythTV on
>     >>>      Xubuntu 16.04 I saw a similar effect because one piece of
>     firmware
>     >>>      (nxp7164-2010-03-10.1.fw) for
>     >>>
>     >>>      my Hauppauge_WinTV-HVR-2200 was not in /lib/firmware/'current
>     >>>      kernal'  , so I was checking the locations of the relevant
>     >>>      firmware and I see  /lib/firmware/'current kernal' no longer
>     >>>
>     >>>      exists.
>     >>>
>     >>>       The HVR-2200 drivers:  v4l-saa7164-1.0.2.fw      ;
>     >>>      v4l-saa7164-1.0.3.fw     ;     cp dvb-fe-tda10048-1.0.fw 
>          and
>     >>>       nxp7164-2010-03-10.1.fw    are currently all in
>     >>>
>     >>>      /lib/firmware.
>     >>>
>     >>>      The other thing I noticed is that all the firmware is
>     Zstandard
>     >>>      compressed and the 4 HVR-2200 files with .fw extensions are
>     >>>      described in the Thunar file manager as "unknown".
>     >>>
>     >>>      Do I need to compress these files and convert them to .fw.zst
>     >>>      extensions  like all the others or are these ok as is?
>     >>>
>     >>>      Regards
>     >>>
>     >>>
>     >>> I may have missed it, but what distro are you currently using?
>     >> Hi  , in recent weeks I went from 20.04 to 24.04 via 22.04 and
>     to MythTV
>     >> version 35
>     > I had a look at my /lib/firmware directory and it looks like the new
>     > standard in Ubuntu 24.04 is to compress all the .fw files.  I have a
>     > lot of .fw.zst files - it looks like most of the .fw files that are
>     > coming from current 24.04 packages are zst compressed. But in the
>     > dmesg output, I can still see .fw files being loaded, so it is not
>     > necessary to go around compressing your other .fw files.
>     >
>     > Not all drivers report loading their firmware files, but it always
>     > pays to check occasionally to see what is happening at boot
>     time. Take
>     > a look at the output of:
>     >
>     > dmesg | grep "\.fw"
>     >
>     > If it is a long time since the last boot, there may no longer be any
>     > boot messages in the dmesg output, so if possible check soon after a
>     > boot.
>     >
>     > I have never actually heard of there being a /lib/firmware/'current
>     > kernel' directory.  I have always put the firmware in
>     /lib/firmware or
>     > an appropriate subdirectory of /lib/firmware.
>     >
>     >
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>
>     /lib/firmware/'current kernel'   Probably dated back to 12.04 or
>     16.04 . I used to have to copy NXP7164_2010-03-10.1.fw to
>     /lib/firmware/'current kernel'  after kernel updates , or I would
>     get intermittent pixellation in recordings.
>     After 20.04 I no longer need to do that. That's probably when
>     /lib/firmware/'current kernel' ceased to exist.
>
>     The output of dmesg | grep "\.fw" :
>
>     [    6.047781] saa7164_downloadfirmware() Waiting for firmware
>     upload (NXP7164-2010-03-10.1.fw)
>     [   22.767075] tda10048_firmware_upload: waiting for firmware
>     upload (dvb-fe-tda10048-1.0.fw)...
>     [   28.488814] tda10048_firmware_upload: waiting for firmware
>     upload (dvb-fe-tda10048-1.0.fw)...
>
>     My system boots for recordings and then shuts down
>
>     I compressed the four firmware files to see if it makes any
>     difference.
>
>
>
>
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Thanks

That is the same procedure I used in 12.04

Apart from the brief pixellation after skipping forward during replay 
there are no other problems and both HVR tuners work and come on-line fast.

There may be an entirely different cause for the pixellation. I just 
looked at the HVR firmware because that was a similar effect over a 
decade ago.
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