[mythtv-users] Problems with HVR 1300 and DVB-T on recent kernels

[Marc Randolph]

On Sun, Oct 11, 2009 at 11:22 AM, Chris Jones
<chris at mollingtonconsultants.com> wrote:
>> -----Original Message-----
>> From: mythtv-users-bounces at mythtv.org [mailto:mythtv-users-
>> bounces at mythtv.org] On Behalf Of Fabian Renn
>> Sent: 11 October 2009 2:09 PM
>> To: mythtv-users at mythtv.org
>> Subject: [mythtv-users] Problems with HVR 1300 and DVB-T on recent
>> kernels
>>
>> Hi,
>> i'm also having the same problem on a Hauppage 1300. Strange thing is
>> that tzap, mplayer etc. all work fine. So it's really mythtv that is
>> causing the problem. I have tried all sort of high time waits.
>>
>> Thanks!
>>
>> hogliux
>>
>> > Hi,
>> >
>> > I recently upgraded my amd64 Debian MythTV box  with a Haupauge
>> > HVR1300
>> > from Debian kernel 2.6.26 to 2.6.30 and could not get a channel lock
>> > for
>> > my DVB-T tv channels any more (btw, I am using current Debian
>> > packages
>> > from debian-multimedia).
>> >
>> > I then did some quick testing with vanilla linux kernels starting
>> > with
>> > 2.6.27
>> > with the following results:
>> > 2.6.27: seems to work fine
>> > 2.6.28: channel lock could not be acquired reliably; sometimes
>> > switching
>> > channels worked fine, most of the time it failed
>> > 2.6.29: could not get any channel locks
>> > 2.6.30: the same, no channel lock
>> > 2.6.31-rc7: the same, no channel locks
>> >
>> > At first I suspected the driver to have a problem but other
>> > applications
>> > such as 'scan' still can see all channels with 2.6.31-rc7 (I also
>> > tried
>> > kaffeine which found most of the channels but not all).
>> >
>> > I tried various settings for the channel scan time out with no luck.
>> > I also tried importing the channels.conf I generated with scan (and
>> > whose
>> > output is the same for both 2.6.26 and 2.6.31-rc7) but in that case
>> > mythtv-setup crashed on me most of the time.
>> >
>> > Any idea what could go wrong after the update? I am only using the
>> > DVB-T
>> > input of the card, no analogue capturing. Removing the cx88_blackbird
>> > module did not change anything.
>> >
>
> I am also having the same problems, but with Fedora 11 x86-64. On Fedora 10,
> this configuration worked fine, but when I upgraded to F11 in August, that
> is when my problems started. Clearly, something is wrong with MythTV, as
> this does not appear to be distribution specific. Like you, I can watch TV
> on Kaffeine, but Mythtv just refuses to do anything. ScanDVB works, as does
> tzap.

Broken HVR-1300 channel scan bug is here:
http://svn.mythtv.org/trac/ticket/7292

If anyone has something constructive to add (additional insight on
what has changed, or useful log messages not contained in the bug
already) feel free to do so.  As always, PLEASE do not just add "me
too" type comments.  Not knowing enough about what is broken and what
code is shared, I don't know if whatever fix is found for this will
help LiveTV for the HVR-1300 either.  If someone believes LiveTV is a
separate issue, a new bug should probably be opened.

   Marc