[mythtv-users] Getting it to Work > Hauppauge WinTV-quadHD (DVB-T/T2/C)

Fri Nov 18 09:44:37 UTC 2016

Hi Stephen I tried V4L as suggested in the 4.8.5 kernel but no files
generated in /dev/dvb/* and board not recognized in myth setup.

I have now re-built this box with 0.28 ISO mythbuntu-16.04.1-desktop-amd64
to get a clean system with kernel 4.4.0-47.

The quad board is not recognized, the lspci -v output is the same as before
ie:
<quote>
1a:00.0 Multimedia video controller: Conexant Systems, Inc. CX23885 PCI
Video and Audio Decoder (rev 03)
Subsystem: Hauppauge computer works Inc. CX23885 PCI Video and Audio Decoder
Flags: bus master, fast devsel, latency 0, IRQ 17
Memory at f0800000 (64-bit, non-prefetchable) [size=2M]
Capabilities: <access denied>
Kernel driver in use: cx23885
Kernel modules: cx23885

1b:00.0 Multimedia video controller: Conexant Systems, Inc. CX23885 PCI
Video and Audio Decoder (rev 03)
Subsystem: Hauppauge computer works Inc. CX23885 PCI Video and Audio Decoder
Flags: bus master, fast devsel, latency 0, IRQ 18
Memory at f0600000 (64-bit, non-prefetchable) [size=2M]
Capabilities: <access denied>
Kernel driver in use: cx23885
Kernel modules: cx23885
</quote>

I then tried V4L on clean 4.4  setup, the result was the same no /dev/dvb/*
and the board not recognized by myth.

I think we may be going down the wrong track. I ordered model 1609 which
was supported by https://www.linuxtv.org/wiki/index.php/Hauppauge_WinTV-
quadHD_(DVB-T/T2/C). Three months later I received model 1628.  The most
active response came when I installed kernel 4.8 refered to at the start of
this conversation.

PS (For the family I have now re-built another box with 0.27-14.04-4.2.0-42
generic and a DigitaNow Quad tuner. We originally had multi failures
when upgrading to 0.28.)

On Fri, Nov 11, 2016 at 12:18 PM, Stephen Worthington <
stephen_agent at jsw.gen.nz> wrote:

> On Thu, 10 Nov 2016 15:23:49 +1300, you wrote:
>
> >On Thu, 10 Nov 2016 08:36:19 +1100, you wrote:
> >
> >>On Tue, Nov 1, 2016 at 5:21 PM, Glen Adamson <glengilesa at gmail.com>
> wrote:
> >>
> >>> Thank you, I have emailed Hauppauge and enclosed the kern.log file to
> them
> >>> and to you.
> >>>
> >>> The kernel log has a line that includes "warning: unknown hauppauge
> model
> >>> #166201". The one I ordered was #01609.
> >>>
> >>> Glen
> >>>
> >>> I emailed Hauppauge with the following:
> >><<<<<<<<<<< QUOTE >>>>>>>>>>>
> >>
> >>...
> >>
> >>Computer: HP i5 Compaq 8100 64bit.
> >>
> >>OS: mythbuntu 16.04.
> >>
> >>Kernel: 4.8.5-040805-generic.
> >>
> >>Application: MythTV 0.28.
> >>
> >>Country: Australia DVB/T2/C.
> >>
> >>
> >>
> >>Installed the PCIe board.
> >>
> >>Copied the firmware dvb-demod-si2168-b40-01.fw to /lib/firmware/ and
> >>installed kernel 4.8 to get the required driver.
> >>
> >>
> >>Your Linux Support shows the lspci output to be as follows:
> >>
> >><quote>
> >>lspci -v
> >>04:00.0 Multimedia video controller: Conexant Systems, Inc. CX23887/8
> PCIe
> >>Broadcast Audio and Video Decoder with 3D Comb (rev 04)
> >>Subsystem: Hauppauge computer works Inc. Device 6a18
> >>Flags: bus master, fast devsel, latency 0, IRQ 19
> >>Memory at fd200000 (64-bit, non-prefetchable) [size=2M]
> >>Capabilities: <access denied>
> >>Kernel driver in use: cx23885
> >>05:00.0 Multimedia video controller: Conexant Systems, Inc. CX23887/8
> PCIe
> >>Broadcast Audio and Video Decoder with 3D Comb (rev 04)
> >>Subsystem: Hauppauge computer works Inc. Device 6a18
> >>Flags: bus master, fast devsel, latency 0, IRQ 16
> >>Memory at fd000000 (64-bit, non-prefetchable) [size=2M]
> >>Capabilities: <access denied>
> >>Kernel driver in use: cx23885
> >>
> >></quote>
> >>
> >>But my lspci system output is:
> >><quote>
> >>lspci -v
> >>
> >>1a:00.0 Multimedia video controller: Conexant Systems, Inc. CX23885 PCI
> >>Video and Audio Decoder (rev 03)
> >>
> >>    Subsystem: Hauppauge computer works Inc. CX23885 PCI Video and Audio
> >>Decoder
> >>
> >>    Flags: bus master, fast devsel, latency 0, IRQ 17
> >>
> >>    Memory at f0800000 (64-bit, non-prefetchable) [size=2M]
> >>
> >>    Capabilities: <access denied>
> >>
> >>    Kernel driver in use: cx23885
> >>
> >>    Kernel modules: cx23885
> >>
> >>1b:00.0 Multimedia video controller: Conexant Systems, Inc. CX23885 PCI
> >>Video and Audio Decoder (rev 03)
> >>
> >>    Subsystem: Hauppauge computer works Inc. CX23885 PCI Video and Audio
> >>Decoder
> >>
> >>    Flags: bus master, fast devsel, latency 0, IRQ 18
> >>
> >>    Memory at f0600000 (64-bit, non-prefetchable) [size=2M]
> >>
> >>    Capabilities: <access denied>
> >>
> >>    Kernel driver in use: cx23885
> >>
> >>    Kernel modules: cx23885
> >>
> >></quote>
> >>
> >>I expected version (rev 04) but I got (rev 03) above and note that
> >>Linux Support
> >>chip PI7C9X2G304 is NOT listed below:
> >><quote>
> >>
> >>lsmod
> >>Module    Size     Used by
> >>si2157    16384   4
> >>si2168    20480   4
> >>cx23885 176128 1
> >>...
> >></quote>
> >>
> >>...
> >>
> >><<<<<<<<<<< /QUOTE >>>>>>>>>>>
> >>
> >>
> >>and have received the following one line reply:
> >>
> >>"At this time we have only tested kernel 4.4. Have you tried the patch
> >>attached? "
> >>
> >>
> >>The patch is attached.
> >>
> >>
> >>Installing the patch is well outside my understanding of Linux,  I need
> >>explicit step by step help to achieve a change to the kernel.
> >>
> >>Should I revert back to kernel 4.4 as the very first action?
> >>
> >>
> >>Glen
> >
> >The patch looks pretty straightforward - it just adds the new code for
> >your card (ATSC and DVB-T version), rather than changing any old code.
> >So it is not unlikely to work with later kernels.  It would certainly
> >be worth trying with your current kernel's source code.  If that does
> >not work, then you can change to the 4.4.15 kernel that patch file was
> >made for.
> >
> >The patch is not really on the kernel itself, it is for the Video for
> >Linux code (V4L), which is also available as a separate set of source
> >code and can be compiled (and patched) and installed on top of an
> >existing kernel - all the V4L drivers installed by the original kernel
> >install are deleted and replaced by the new V4L drivers.  It is
> >possible that the patch has already been incorporated into the later
> >V4L code, so it would be worth downloading a recent version and
> >checking that.  The instructions for V4L are here:
> >
> >https://www.linuxtv.org/wiki/index.php/How_to_Obtain,_
> Build_and_Install_V4L-DVB_Device_Drivers
> >
> >The first thing I would try would be seeing if the recent V4L code has
> >the patch already, and if it does not, seeing if the patch can be
> >applied to that and then compiling and installing just the new V4L,
> >rather than doing a complete kernel compile.  It takes long enough to
> >do a V4L compile - a complete kernel takes ages, even when doing it on
> >a fast SSD with a fast multicore CPU.
> >
> >If just patching V4L is not possible, then you can try patching a full
> >kernel.  There are various guides for applying patches to kernels. For
> >Ubuntu, the "official" guide to building a kernel is here:
> >
> >https://help.ubuntu.com/community/Kernel/Compile
> >
> >You will need to apply the patch file to the source code before
> >building it (kernel or V4L).  That is done with a patch command like
> >this:
> >
> >cd /the/correct/directory
> >patch <quad_atsc_dvbt_4.4.15.patch
> >
> >You may need to use a -p option on the patch command to get the levels
> >of directory to match (see man patch).  In which case it would look
> >something like this:
> >
> >cd /the/correct/directory
> >patch -p1 <quad_atsc_dvbt_4.4.15.patch
> >
> >The patch command will tell you if it has any problems applying the
> >patch.  If it says the patch is OK, it is still best to check the file
> >locations where the patch was done to see if it looks OK, the first
> >time you try the patch.  Then go on with the build and install
> >procedure.
>
> It looks like you are in luck.  I just pulled down a copy of the V4L
> drivers and checked the patch against it.  It has already been
> applied, although in slightly different form.  So all you need to do
> is to do the "basic" build and install procedure:
>
> git clone --depth=1 git://linuxtv.org/media_build.git
> cd media_build
> ./build
> make install
>
> That also means that at some future point, the drivers should be built
> into the standard kernels.
>
> Note that installing the V4L drivers will completely overwrite your
> old driver set from the installed kernel with the new V4L backport
> driver set.  Sometimes this can cause problems with cards other than
> the one you are trying to get going, as there has been some change
> that affects them.  So if your system has other V4L cards in it, you
> need to check that they still work properly with the new drivers
> installed.
>
> Also, every time you install a new kernel (eg via the normal updates),
> you need to re-install the V4L drivers using the same procedure.
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://lists.mythtv.org/mailman/listinfo/mythtv-users
> http://wiki.mythtv.org/Mailing_List_etiquette
> MythTV Forums: https://forum.mythtv.org
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mythtv.org/pipermail/mythtv-users/attachments/20161118/4cedb373/attachment.html>