[linux-dvb] Hauppauge HVR-1950 digital part

[linux-dvb] Hauppauge HVR-1950 digital part

[Yusik Kim]

Hi,

Has anyone got the digital part of this device to work properly? 

Modules are compiled from the latest (7/26) v4l-dvb snapshot with a 2.6.25.4 
kernel. The modules seem to load properly and the analog part works in 
mythtv. The digital part kind of works.
The problems I can observe are:
1. Can only scan 3 digital channels using both the command line scan and 
mythtv. My other PCI TV card scans 36 of them. 
2. Only occasionally locks in to a channel.
3. Takes 5 minutes to lock in to a channel when it actually does succeed.

I saw from another mailing list that people were trying to get the remote 
control to work so I'm guessing the core of the device functions properly. If 
this is the current state of support, I'd be glad to help testing.

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Re: [linux-dvb] Hauppauge HVR-1950 digital part

[Steven Toth]

Yusik Kim wrote:
> Hi,
> 
> Has anyone got the digital part of this device to work properly? 
> 
> Modules are compiled from the latest (7/26) v4l-dvb snapshot with a 2.6.25.4 
> kernel. The modules seem to load properly and the analog part works in 
> mythtv. The digital part kind of works.
> The problems I can observe are:
> 1. Can only scan 3 digital channels using both the command line scan and 
> mythtv. My other PCI TV card scans 36 of them. 
> 2. Only occasionally locks in to a channel.
> 3. Takes 5 minutes to lock in to a channel when it actually does succeed.
> 
> I saw from another mailing list that people were trying to get the remote 
> control to work so I'm guessing the core of the device functions properly. If 
> this is the current state of support, I'd be glad to help testing.

What steps did you take to prove your hardware is function properly, or 
your digital cable feed is reliable?

The drivers works for me, it sounds like you have an environmental issue.

- Steve

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Re: [linux-dvb] Hauppauge HVR-1950 digital part

[Yusik Kim]

On Saturday 26 July 2008 08:39:16 Steven Toth wrote:
> Yusik Kim wrote:
> > Hi,
> >
> > Has anyone got the digital part of this device to work properly?
> >
> > Modules are compiled from the latest (7/26) v4l-dvb snapshot with a
> > 2.6.25.4 kernel. The modules seem to load properly and the analog part
> > works in mythtv. The digital part kind of works.
> > The problems I can observe are:
> > 1. Can only scan 3 digital channels using both the command line scan and
> > mythtv. My other PCI TV card scans 36 of them.
> > 2. Only occasionally locks in to a channel.
> > 3. Takes 5 minutes to lock in to a channel when it actually does succeed.
> >
> > I saw from another mailing list that people were trying to get the remote
> > control to work so I'm guessing the core of the device functions
> > properly. If this is the current state of support, I'd be glad to help
> > testing.
>
> What steps did you take to prove your hardware is function properly, or
> your digital cable feed is reliable?
>
> The drivers works for me, it sounds like you have an environmental issue.
>
> - Steve

Thank you for replying Steve.
I have a windows partition on the same machine and it works perfectly there. 
So I don't think there is a problem with the cable feed or hardware itself. 

Not sure if it has any relevance but I noticed in windows, the red LED light 
in the front is always on whereas in linux, it only turns on right before it 
tries to lock in to a channel. 

I should add that the 3 channels that were successfully scaned do not always 
get picked up in subsequent attempts. It seems like it has trouble tuning. At 
least it's good to know it's a problem on my end. Just have to find a way to 
fix it.

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Re: [linux-dvb] Hauppauge HVR-1950 digital part

[Yusik Kim]

On Saturday 26 July 2008 11:30:39 Yusik Kim wrote:
> On Saturday 26 July 2008 08:39:16 Steven Toth wrote:
> > Yusik Kim wrote:
> > > Hi,
> > >
> > > Has anyone got the digital part of this device to work properly?
> > >
> > > Modules are compiled from the latest (7/26) v4l-dvb snapshot with a
> > > 2.6.25.4 kernel. The modules seem to load properly and the analog part
> > > works in mythtv. The digital part kind of works.
> > > The problems I can observe are:
> > > 1. Can only scan 3 digital channels using both the command line scan
> > > and mythtv. My other PCI TV card scans 36 of them.
> > > 2. Only occasionally locks in to a channel.
> > > 3. Takes 5 minutes to lock in to a channel when it actually does
> > > succeed.
> > >
> > > I saw from another mailing list that people were trying to get the
> > > remote control to work so I'm guessing the core of the device functions
> > > properly. If this is the current state of support, I'd be glad to help
> > > testing.
> >
> > What steps did you take to prove your hardware is function properly, or
> > your digital cable feed is reliable?
> >
> > The drivers works for me, it sounds like you have an environmental issue.
> >
> > - Steve
>
> Thank you for replying Steve.
> I have a windows partition on the same machine and it works perfectly
> there. So I don't think there is a problem with the cable feed or hardware
> itself.
>
> Not sure if it has any relevance but I noticed in windows, the red LED
> light in the front is always on whereas in linux, it only turns on right
> before it tries to lock in to a channel.
>
> I should add that the 3 channels that were successfully scaned do not
> always get picked up in subsequent attempts. It seems like it has trouble
> tuning. At least it's good to know it's a problem on my end. Just have to
> find a way to fix it.

Also, I tried re-extracting the firmware with the perl script
http://www.isely.net/downloads/fwextract.pl
I downloaded today and used it on the installation CD to get the following 
files
376836 2008-07-26 11:59 v4l-cx2341x-enc.fw
  12559 2008-07-26 11:59 v4l-cx25840.fw
    8192 2008-07-26 11:59 v4l-pvrusb2-29xxx-01.fw
    8192 2008-07-26 11:59 v4l-pvrusb2-73xxx-01.fw
but still no luck. By the way, the filesize for the old v4l-cx25840.fw was 
16382. Everything else the same.

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Re: [linux-dvb] Hauppauge HVR-1950 digital part

[Mike Isely]

On Sat, 26 Jul 2008, Yusik Kim wrote:

> On Saturday 26 July 2008 11:30:39 Yusik Kim wrote:

   [...]

> 
> Also, I tried re-extracting the firmware with the perl script
> http://www.isely.net/downloads/fwextract.pl
> I downloaded today and used it on the installation CD to get the following 
> files
> 376836 2008-07-26 11:59 v4l-cx2341x-enc.fw
>   12559 2008-07-26 11:59 v4l-cx25840.fw
>     8192 2008-07-26 11:59 v4l-pvrusb2-29xxx-01.fw
>     8192 2008-07-26 11:59 v4l-pvrusb2-73xxx-01.fw
> but still no luck. By the way, the filesize for the old v4l-cx25840.fw was 
> 16382. Everything else the same.

The extraction script uses MD5 sums to verify it has correctly extracted 
the data.  If you're getting firmware files back out, then those files 
are definitely correct.

However with that said, there are multiple versions of some of the 
firmware floating around.  In particular I have come across 4-5 
different cx25840 firmware versions.  All should work however, for what 
you are trying to do.  (Also, if this is a digital mode tuning problem, 
then the cx25840 part is not relevant to the problem.)

  -Mike


-- 

Mike Isely
isely @ pobox (dot) com
PGP: 03 54 43 4D 75 E5 CC 92 71 16 01 E2 B5 F5 C1 E8

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Re: [linux-dvb] Hauppauge HVR-1950 digital part

[Mike Isely]

On Sat, 26 Jul 2008, Yusik Kim wrote:

> On Saturday 26 July 2008 08:39:16 Steven Toth wrote:
> > Yusik Kim wrote:
> > > Hi,
> > >
> > > Has anyone got the digital part of this device to work properly?
> > >
> > > Modules are compiled from the latest (7/26) v4l-dvb snapshot with a
> > > 2.6.25.4 kernel. The modules seem to load properly and the analog part
> > > works in mythtv. The digital part kind of works.
> > > The problems I can observe are:
> > > 1. Can only scan 3 digital channels using both the command line scan and
> > > mythtv. My other PCI TV card scans 36 of them.
> > > 2. Only occasionally locks in to a channel.
> > > 3. Takes 5 minutes to lock in to a channel when it actually does succeed.
> > >
> > > I saw from another mailing list that people were trying to get the remote
> > > control to work so I'm guessing the core of the device functions
> > > properly. If this is the current state of support, I'd be glad to help
> > > testing.
> >
> > What steps did you take to prove your hardware is function properly, or
> > your digital cable feed is reliable?
> >
> > The drivers works for me, it sounds like you have an environmental issue.
> >
> > - Steve
> 
> Thank you for replying Steve.
> I have a windows partition on the same machine and it works perfectly there. 
> So I don't think there is a problem with the cable feed or hardware itself. 
> 
> Not sure if it has any relevance but I noticed in windows, the red LED light 
> in the front is always on whereas in linux, it only turns on right before it 
> tries to lock in to a channel. 

While I can't vouch for what the Windows driver is doing, the Linux 
driver (pvrusb2) for this device deliberately only lights the LED when 
actual streaming is being attempted.  Basically the LED becomes a "busy" 
indicator.  It's a feature not a bug :-)


> 
> I should add that the 3 channels that were successfully scaned do not always 
> get picked up in subsequent attempts. It seems like it has trouble tuning. At 
> least it's good to know it's a problem on my end. Just have to find a way to 
> fix it.
> 

Sounds a lot like there's a significant tuning problem.  Unfortunately 
I'm not seeing the issue here :-(

  -Mike


-- 

Mike Isely
isely @ pobox (dot) com
PGP: 03 54 43 4D 75 E5 CC 92 71 16 01 E2 B5 F5 C1 E8

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Re: [linux-dvb] Hauppauge HVR-1950 digital part

[Yusik Kim]

On Saturday 26 July 2008 13:40:36 Mike Isely wrote:
> On Sat, 26 Jul 2008, Yusik Kim wrote:
> > On Saturday 26 July 2008 08:39:16 Steven Toth wrote:
> > > Yusik Kim wrote:
> > > > Hi,
> > > >
> > > > Has anyone got the digital part of this device to work properly?
> > > >
> > > > Modules are compiled from the latest (7/26) v4l-dvb snapshot with a
> > > > 2.6.25.4 kernel. The modules seem to load properly and the analog
> > > > part works in mythtv. The digital part kind of works.
> > > > The problems I can observe are:
> > > > 1. Can only scan 3 digital channels using both the command line scan
> > > > and mythtv. My other PCI TV card scans 36 of them.
> > > > 2. Only occasionally locks in to a channel.
> > > > 3. Takes 5 minutes to lock in to a channel when it actually does
> > > > succeed.
> > > >
> > > > I saw from another mailing list that people were trying to get the
> > > > remote control to work so I'm guessing the core of the device
> > > > functions properly. If this is the current state of support, I'd be
> > > > glad to help testing.
> > >
> > > What steps did you take to prove your hardware is function properly, or
> > > your digital cable feed is reliable?
> > >
> > > The drivers works for me, it sounds like you have an environmental
> > > issue.
> > >
> > > - Steve
> >
> > Thank you for replying Steve.
> > I have a windows partition on the same machine and it works perfectly
> > there. So I don't think there is a problem with the cable feed or
> > hardware itself.
> >
> > Not sure if it has any relevance but I noticed in windows, the red LED
> > light in the front is always on whereas in linux, it only turns on right
> > before it tries to lock in to a channel.
>
> While I can't vouch for what the Windows driver is doing, the Linux
> driver (pvrusb2) for this device deliberately only lights the LED when
> actual streaming is being attempted.  Basically the LED becomes a "busy"
> indicator.  It's a feature not a bug :-)
>
> > I should add that the 3 channels that were successfully scaned do not
> > always get picked up in subsequent attempts. It seems like it has trouble
> > tuning. At least it's good to know it's a problem on my end. Just have to
> > find a way to fix it.
>
> Sounds a lot like there's a significant tuning problem.  Unfortunately
> I'm not seeing the issue here :-(
>
>   -Mike

Thanks Mike.
Nobody else seems to have the same problem. What's driving me crazy is that I 
have 2 laptops where I can test (c2d 1.06GHz/ Pentium-M 1.4GHz(backend 
only);both Debian testing) and both have the exact same problem so it's most 
likely not machine specific. It works on a windows partition of the c2d 
machine so it's not hardware related nor is it because of a bad signal 
source.  So the only thing that stands between me and all the other people 
who are happily using it can be narrowed down to kernel options or the 
distro.  Are there any known kernel options/modules that may interfere with 
the tuning? 

Another interesting thing is that in mythtv-setup, I have no option to choose 
ATSC. Only NTSC, NTSC-JP, SECAM, etc. but no ATSC. It doesn't even allow me 
the option to manually create an ATSC channel. The only way I get an ATSC 
channel is through active scan (which most of the time doesn't work). I can 
select ATSC on my desktop with a pci capture card. I can't use the desktop to 
test it because it's USB1.1.

It looks like a dead end for now. Thanks to everyone who tried to help.

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Re: [linux-dvb] Hauppauge HVR-1950 digital part

[Michael Krufky]

Yusik Kim wrote:
> On Saturday 26 July 2008 13:40:36 Mike Isely wrote:
>> On Sat, 26 Jul 2008, Yusik Kim wrote:
>>> On Saturday 26 July 2008 08:39:16 Steven Toth wrote:
>>>> Yusik Kim wrote:
>>>>> Hi,
>>>>>
>>>>> Has anyone got the digital part of this device to work properly?
>>>>>
>>>>> Modules are compiled from the latest (7/26) v4l-dvb snapshot with a
>>>>> 2.6.25.4 kernel. The modules seem to load properly and the analog
>>>>> part works in mythtv. The digital part kind of works.
>>>>> The problems I can observe are:
>>>>> 1. Can only scan 3 digital channels using both the command line scan
>>>>> and mythtv. My other PCI TV card scans 36 of them.
>>>>> 2. Only occasionally locks in to a channel.
>>>>> 3. Takes 5 minutes to lock in to a channel when it actually does
>>>>> succeed.
>>>>>
>>>>> I saw from another mailing list that people were trying to get the
>>>>> remote control to work so I'm guessing the core of the device
>>>>> functions properly. If this is the current state of support, I'd be
>>>>> glad to help testing.
>>>> What steps did you take to prove your hardware is function properly, or
>>>> your digital cable feed is reliable?
>>>>
>>>> The drivers works for me, it sounds like you have an environmental
>>>> issue.
>>>>
>>>> - Steve
>>> Thank you for replying Steve.
>>> I have a windows partition on the same machine and it works perfectly
>>> there. So I don't think there is a problem with the cable feed or
>>> hardware itself.
>>>
>>> Not sure if it has any relevance but I noticed in windows, the red LED
>>> light in the front is always on whereas in linux, it only turns on right
>>> before it tries to lock in to a channel.
>> While I can't vouch for what the Windows driver is doing, the Linux
>> driver (pvrusb2) for this device deliberately only lights the LED when
>> actual streaming is being attempted.  Basically the LED becomes a "busy"
>> indicator.  It's a feature not a bug :-)
>>
>>> I should add that the 3 channels that were successfully scaned do not
>>> always get picked up in subsequent attempts. It seems like it has trouble
>>> tuning. At least it's good to know it's a problem on my end. Just have to
>>> find a way to fix it.
>> Sounds a lot like there's a significant tuning problem.  Unfortunately
>> I'm not seeing the issue here :-(
>>
>>   -Mike
> 
> Thanks Mike.
> Nobody else seems to have the same problem. What's driving me crazy is that I 
> have 2 laptops where I can test (c2d 1.06GHz/ Pentium-M 1.4GHz(backend 
> only);both Debian testing) and both have the exact same problem so it's most 
> likely not machine specific. It works on a windows partition of the c2d 
> machine so it's not hardware related nor is it because of a bad signal 
> source.  So the only thing that stands between me and all the other people 
> who are happily using it can be narrowed down to kernel options or the 
> distro.  Are there any known kernel options/modules that may interfere with 
> the tuning? 
> 
> Another interesting thing is that in mythtv-setup, I have no option to choose 
> ATSC. Only NTSC, NTSC-JP, SECAM, etc. but no ATSC. It doesn't even allow me 
> the option to manually create an ATSC channel. The only way I get an ATSC 
> channel is through active scan (which most of the time doesn't work). I can 
> select ATSC on my desktop with a pci capture card. I can't use the desktop to 
> test it because it's USB1.1.
> 
> It looks like a dead end for now. Thanks to everyone who tried to help.

To use ATSC in mythtv, set the device up as a DVB device, not a video4linux device.  You set up two devices, one video4linux for the analog encoding, the other "DVB" for ATSC.

I also suggest that you try adding a signal amplifier and see if that helps the reception.

Regards,

Mike

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Re: [linux-dvb] Hauppauge HVR-1950 digital part

[Yusik Kim]

On Saturday 26 July 2008 18:33:47 Michael Krufky wrote:
> Yusik Kim wrote:
> > On Saturday 26 July 2008 13:40:36 Mike Isely wrote:
> >> On Sat, 26 Jul 2008, Yusik Kim wrote:
> >>> On Saturday 26 July 2008 08:39:16 Steven Toth wrote:
> >>>> Yusik Kim wrote:
> >>>>> Hi,
> >>>>>
> >>>>> Has anyone got the digital part of this device to work properly?
> >>>>>
> >>>>> Modules are compiled from the latest (7/26) v4l-dvb snapshot with a
> >>>>> 2.6.25.4 kernel. The modules seem to load properly and the analog
> >>>>> part works in mythtv. The digital part kind of works.
> >>>>> The problems I can observe are:
> >>>>> 1. Can only scan 3 digital channels using both the command line scan
> >>>>> and mythtv. My other PCI TV card scans 36 of them.
> >>>>> 2. Only occasionally locks in to a channel.
> >>>>> 3. Takes 5 minutes to lock in to a channel when it actually does
> >>>>> succeed.
> >>>>>
> >>>>> I saw from another mailing list that people were trying to get the
> >>>>> remote control to work so I'm guessing the core of the device
> >>>>> functions properly. If this is the current state of support, I'd be
> >>>>> glad to help testing.
> >>>>
> >>>> What steps did you take to prove your hardware is function properly,
> >>>> or your digital cable feed is reliable?
> >>>>
> >>>> The drivers works for me, it sounds like you have an environmental
> >>>> issue.
> >>>>
> >>>> - Steve
> >>>
> >>> Thank you for replying Steve.
> >>> I have a windows partition on the same machine and it works perfectly
> >>> there. So I don't think there is a problem with the cable feed or
> >>> hardware itself.
> >>>
> >>> Not sure if it has any relevance but I noticed in windows, the red LED
> >>> light in the front is always on whereas in linux, it only turns on
> >>> right before it tries to lock in to a channel.
> >>
> >> While I can't vouch for what the Windows driver is doing, the Linux
> >> driver (pvrusb2) for this device deliberately only lights the LED when
> >> actual streaming is being attempted.  Basically the LED becomes a "busy"
> >> indicator.  It's a feature not a bug :-)
> >>
> >>> I should add that the 3 channels that were successfully scaned do not
> >>> always get picked up in subsequent attempts. It seems like it has
> >>> trouble tuning. At least it's good to know it's a problem on my end.
> >>> Just have to find a way to fix it.
> >>
> >> Sounds a lot like there's a significant tuning problem.  Unfortunately
> >> I'm not seeing the issue here :-(
> >>
> >>   -Mike
> >
> > Thanks Mike.
> > Nobody else seems to have the same problem. What's driving me crazy is
> > that I have 2 laptops where I can test (c2d 1.06GHz/ Pentium-M
> > 1.4GHz(backend only);both Debian testing) and both have the exact same
> > problem so it's most likely not machine specific. It works on a windows
> > partition of the c2d machine so it's not hardware related nor is it
> > because of a bad signal source.  So the only thing that stands between me
> > and all the other people who are happily using it can be narrowed down to
> > kernel options or the distro.  Are there any known kernel options/modules
> > that may interfere with the tuning?
> >
> > Another interesting thing is that in mythtv-setup, I have no option to
> > choose ATSC. Only NTSC, NTSC-JP, SECAM, etc. but no ATSC. It doesn't even
> > allow me the option to manually create an ATSC channel. The only way I
> > get an ATSC channel is through active scan (which most of the time
> > doesn't work). I can select ATSC on my desktop with a pci capture card. I
> > can't use the desktop to test it because it's USB1.1.
> >
> > It looks like a dead end for now. Thanks to everyone who tried to help.
>
> To use ATSC in mythtv, set the device up as a DVB device, not a video4linux
> device.  You set up two devices, one video4linux for the analog encoding,
> the other "DVB" for ATSC.
My device is set up as DVB (s5h1411/ATSC). In fact, I don't have the analog 
tuner set up since I know it is working. What I am saying is that in 
mythtv-setup -> General -> Locale Settings -> TV Format
I don't have an option to choose ATSC where my other pci tuner does give me 
that option. Also when I try to manually create a new channel from the 
channel editor there is no ATSC option for the "tv format" but the 
pre-scanned channels do display  "ATSC". I didn't know if this was normal 
behavior. 

Probably no one will be interested at this point but I also noticed after 
taking 5 minutes to lock to a signal, it can quickly lock to the channels 
that are near by (e.g. 7_1, 7_2, 7_3) but when changing the channel to 
something like 9_1, it takes another 5 minutes to lock to it. 

>
> I also suggest that you try adding a signal amplifier and see if that helps
> the reception.
My antenna is the type that has a small built in amplifier but I'll try it out 
at a friend's house with cable.

Thanks!

>
> Regards,
>
> Mike



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