[mythtv-users] HDHR prob with new wallwarts

Stephen Worthington stephen_agent at jsw.gen.nz
Fri Dec 13 15:27:50 UTC 2019

On Fri, 13 Dec 2019 09:51:00 -0500, you wrote:

>On Fri, Dec 13, 2019 at 6:14 AM Stephen Worthington <
>stephen_agent at jsw.gen.nz> wrote:
>> On Thu, 12 Dec 2019 16:31:02 -0500, you wrote:
>> >On Thu, Dec 12, 2019 at 1:45 PM Allen Edwards <allen.p.edwards at gmail.com>
>> >wrote:
>> >
>> >>
>> >>
>> >> On Thu, Dec 12, 2019, 10:29 AM Daryl McDonald <darylangela at gmail.com>
>> >> wrote:
>> >>
>> >>>
>> >>>
>> >>> On Sat, Dec 7, 2019, 11:36 AM Allen Edwards <allen.p.edwards at gmail.com
>> >
>> >>> wrote:
>> >>>
>> >>>> I have no idea if this will be helpful but I had several issues
>> getting
>> >>>> my HDHR tuners to work. I provide these in case they might be useful.
>> >>>>
>> >>>> Myth address is and is static. I set it as reserved on
>> the
>> >>>> router. I also set the HDHR addresses as reserved.
>> >>>>
>> >>>> I start the tuners from rc.local. Old school but works.
>> >>>> Here is the code. I believe this was from the vendors website.
>> >>>> hdhomerun_config 10137DC1 set /ir/target "
>> no_clear"
>> >>>> If you need to allow more time to go by, you can add a delay before
>> this
>> >>>> command.
>> >>>>
>> >>> This part is outside my capabilities, probably would need more time if
>> I
>> >>> get the mobo to play nice with ACPI.
>> >>>
>> >>>>
>> >>>> I had a power supply issue as well. The module that I bought with the
>> >>>> HDHR did not put out enough current so I got ones rated for more
>> current.
>> >>>>
>> >>>> I also had random failures. The computer would lose contact with the
>> >>>> turners every few weeks. I traced it to a linux problem as the tuners
>> were
>> >>>> still visible from a Windows computer on the same network. That
>> >>>> troubleshooting tip was provided by Silicon Dust.
>> >>>>
>> >>>> Here is the solution.
>> >>>>
>> >>>> dad at NewMyth:~$ more /etc/network/interfaces
>> >>>> # interfaces(5) file used by ifup(8) and ifdown(8)
>> >>>> auto lo
>> >>>> iface lo inet loopback
>> >>>> auto enp2s0
>> >>>> iface enp2s0 inet static
>> >>>>     address
>> >>>>     netmask
>> >>>>     gateway
>> >>>>     broadcast
>> >>>>     dns-nameservers
>> >>>>
>> >>>> Hope this helps.
>> >>>>
>> >>>> Allen
>> >>>>
>> >>>
>> >>> I've set my FE/BE reserved to .210 and the HDHRs to .211, and .212, no
>> >>> change to gateway and netmask, beyond this I need help.
>> >>
>> >> What you did is not enough. I did that from day 1 and had the problem.
>> >> Perhaps you can ask a specific question based on the fix I posted.
>> >>
>> >>>
>> >>> OK Allen I'm all in, this is my interfaces file now:
>> > $ cat /etc/network/interfaces
>> ># interfaces(5) file used by ifup(8) and ifdown(8)
>> >auto lo
>> >iface lo inet loopback
>> >auto enp2s0
>> >iface enp2s0 inet static
>> >    address
>> >    netmask
>> >    gateway
>> >    broadcast
>> >    dns-nameservers
>> >My only question is, where did you get the dns-nameservers values from? Do
>> >I need to edit these?
>> You would normally want to use the nameservers that your router should
>> be getting from your ISP.  Your router may be able to tell you what
>> they are.  Using Google's public nameservers as above should work for
>> most things, but there can be some subtle problems (and benefits). For
>> example, if your ISP runs local CDN servers (say Akamai servers), then
>> anything you would normally have got from the local CDN servers will
>> now be received from some global server somewhere much further away if
>> you use Google DNS.  And you may be unable to access ISP services that
>> are provided only to your ISP's customers from this PC.
>> If you can find the correct ISP nameserver addresses from your router
>> of maybe from a web page on your ISP's help pages, or by calling their
>> helpdesk, then you can put them here.  ISP nameserver addresses
>> normally do not change, but it can happen if they have to reorganise
>> their IP addresses (especially if someone takes them over), and if
>> that happens, then the static IPs that you put here will need to be
>> changed also.  It is unlikely that your ISP will inform you if they
>> change the addresses, as your router will normally pick up the new
>> ones automatically.  If you use Google's nameservers, then those
>> addresses are extremely unlikely to change.  And if they ever do, it
>> will be big news on the Internet.  But you are giving Google
>> information about what DNS addresses you are using.
>> I think it may be possible to do partial DHCP, where you use a static
>> IP address as above, but get things like the nameserver addresses
>> using DHCP.  I have never done that using the interfaces file, but it
>> is probably possible using some scripting.  Likely way beyond your
>> capabilities.
>> Also, using /etc/network/interfaces on a system that is using
>> NetworkManager as yours is, there can be lots of complications.  I
>> found I had to disable NetworkManager to get some things to work, and
>> that may have included the "dns-nameservers" options.  It is a very
>> long time ago that I did this, so my recollection is cloudy.  So
>> overall I would recommend not doing static IP addresses this way
>> without removing NetworkManager.  It gets too complicated.
>> Instead, I would recommend that you use the NetworkManager GUI to set
>> a "Manual" IP address.  "Manual" is NetworkManager's name for
>> "Static".  You can then set the DNS options on the same screen to
>> "Automatic" and that will get the DNS server addresses using DHCP, but
>> have a static IP address.  The best of both worlds, unless it was a
>> NetworkManager bug that was causing Allen's problems.
>> Click on the NetworkManager icon, usually at the top of the screen,
>> often on the right somewhere.  Mine looks like a little white box with
>> a line dropping down to two more little white boxes below it.  Click
>> on the cogwheel icon to open the settings for the Ethernet card, then
>> on the "IPv4" tab.  Select "IPv4 Method" "Manual" and fill in the
>> "Address" field with the static IP address you want.  The "Netmask"
>> field should normally be set to "" and the "Gateway" to
>> the IPv4 address of your router.  Leave the "DNS" and "Routes" options
>> set to "Automatic".  Click "Apply".
>> _________________________________________
>I understand what you are saying Stephen, but I have a couple questions. If
>I go the manual  method, would I first have to revert my
>"/etc/network/interfaces" file to original state? (I did get successful
>News and NFL recordings on HDHR last night) Secondly, I've employed a fix,
>recommended by this site "
>https://datawookie.netlify.com/blog/2018/10/dns-on-ubuntu-18.04/"  to
>insure that nameserver settings required for my VPN survive a reboot. I
>assume this should be taken into account when using your's or Allen's fix,
>I just checked and the change to /etc/network/interfaces (Allen's fix) has
>not harmed my VPN usage.

OK, having set up those DNS settings for the VPN does change things.
You are already using non-ISP DNS servers, and what that fix does, in
a NetworkManager environment, likely overrides any "dns-nameservers"
lines in the interfaces file, if they were not already being ignored
by NetworkManager.  So there is no need to change anything from what
you have.  You might like to delete or comment out the
"dns-nameservers" line so that it does not fool you at some later date
into thinking that is the right place to change the nameserver

Just be aware that if, at some later time, you want to use something
like an ISP provided multimedia service that is not available outside
the ISP network, it may not work on that PC with the non-ISP DNS
servers being used.

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