[mythtvnz] DVB drivers location and .zst compression
Paul
paulgir at gmail.com
Wed May 21 04:39:28 BST 2025
On 2025-05-21 15:29, Curtis Walker wrote:
>
>
>
> On Wed, 21 May 2025, 14:54 Paul, <paulgir at gmail.com> wrote:
>
>
> 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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>
>
> Heh. I remember upgrading my cabling and installing a new, stronger
> roof antenna before finding it out was a driver/firmware issue causing
> pixellation for the good old saa7164.
>
>
> I think I had a HDHomerun by then , so I quickly eliminated the
> possibility that it was a signal problem.
>
Your symptoms looked exactly the same as mine back then - after 20~30
mins of playback I would get pixellation:
"The additional firmware is for the RF modulator in the card -
specifically, the tda10048. Without this, it SEEMS to work fine, until
you get otherwise inexplicable pixellation. I hope this info saves
someone else a week's work and several dollars in trialling
new/different aerial connectors and attenuators!"
Pretty much what I saw.
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