DVB-T regressions in recent kernels for el7

[John Pilkington]

Hi:  It's a long time since I posted to this list.  I'm a long-time user 
of MythTV, using DVB-T in the UK.


My current Mythbox is running myth-master under Scientific Linux 7, a 
near-clone of RHEL7, an x86_64 distro.  I know that long-lived distros 
like this are not a prime target for linux-media, but they have some 
attractions.


I'm currently running a recent but not current stock kernel; it works 
for me.  Later stock kernels don't see the Hauppauge pci DVB-T card and 
don't identify separately the two tuners in the Kworld usb device. I've 
also tried later kernels from elrepo, with similar lack of success.


So, I do have a working box, but updating kernels is broken.  I'd 
appreciate suggestions.


I have posted earlier on the MythTV and SL lists, without getting 
suggestions leading to a solution.


Thanks,

John Pilkington

-
This one works:

[john@HP_Box ~]$ uname -r
3.10.0-123.9.3.el7.x86_64
[john@HP_Box ~]$ dmesg | grep adapter
[   12.319211] DVB: registering new adapter (Kworld UB499-2T T09(IT9137))
[   12.939916] usb 2-2: DVB: registering adapter 0 frontend 0 (Kworld 
UB499-2T T09(IT9137)_1)...

[   12.941371] DVB: registering new adapter (Kworld UB499-2T T09(IT9137))
[   13.584187] usb 2-2: DVB: registering adapter 1 frontend 0 (Kworld 
UB499-2T T09(IT9137)_2)...

[   16.764033] DVB: registering new adapter (saa7133[0])
[   16.764043] saa7134 :07:04.0: DVB: registering adapter 2 frontend 
0 (Philips TDA10046H DVB-T)...


-
This one, a later stock el7 kernel, doesn't work.

[john@HP_Box ~]$ uname -r
3.10.0-123.13.1.el7.x86_64
john@HP_Box ~]$ dmesg | grep DVB
[1.556887] saa7133[0]: subsystem: 0070:6700, board: Hauppauge 
WinTV-HVR1110 DVB-T/Hybrid [card=104,autodetected]
[1.695217] tveeprom 0-0050: TV standards PAL(B/G) NTSC(M) PAL(I) 
SECAM(L/L') PAL(D/D1/K) ATSC/DVB Digital (eeprom 0xfc)

[1.708443] DVB: Unable to find symbol tda10046_attach()  **
[1.736049] usb 2-2: Product: DVB-T TV Stick
[1.845944] DVB: registering new adapter (Kworld UB499-2T T09(IT9137))
[1.848465] DVB: Unable to find symbol it913x_fe_attach()  **

---
.. and this, a 'testing' kernel, doesn't see the Hauppauge pci device.

[john@HP_Box ~]$ uname -r
3.18.0-1.el7.elrepo.x86_64
[john@HP_Box ~]$ dmesg | grep adapter
[   11.707221] DVB: registering new adapter (Kworld UB499-2T T09)
[   12.054409] usb 2-2: DVB: registering adapter 0 frontend 0 (Afatech 
AF9033 (DVB-T))...

[   12.343371] DVB: registering new adapter (Kworld UB499-2T T09)
[   12.352152] usb 2-2: DVB: registering adapter 1 frontend 0 (Afatech 
AF9033 (DVB-T))...


-
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media_build script and Scientific Linux 6 / CentOS 6 / RHEL 6

[John Pilkington]

I used the media_build script to build modules for the Scientific Linux 
6 distro which is, I understand, one of the near-clones of RHEL 6, which 
are expected to have a working life of several years.  My kernel 
version, with security updates, is currently 2.6.32-131.21.1.el6.i686


The build needed utilities that I did not have installed; the script 
provided their names but apologised for its inability to identify the 
packages that would provide them because it did not recognise the 
distro.  This list is in response to its invitation to submit details.


Utility:lsdiff
Package name:   patchutils
Repo:   SL6

Utility:Digest::SHA
Package name:   perl-Digest-SHA
Repo:   SL6 security updates

Utility:Proc::ProcessTable
Package name:   perl-Proc-ProcessTable
Repo:   SL6 epel

After installing these, and the kernel-devel package, the build 
completed and I have been able to bring into service a usb device that 
had resisted my earlier efforts on the nominally more up-to-date Fedora 
14.  dmesg identifies it as a 'KWorld UB499-2T T09(IT9137)' and some 
characteristics that I see are not mentioned on its wiki page.  I'll 
report on that separately, but there's a narrative account here:


http://www.mail-archive.com/atrpms-users@atrpms.net/msg09417.html

Thanks!

John Pilkington
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Re: POLL: for/against dropping support for kernels 2.6.22

[John Pilkington]

Jean Delvare wrote:


* Enterprise-class distributions (RHEL, SLED) are not the right target
  for the v4l-dvb repository, so we don't care which kernels these are
  running.



I think you should be aware that the mythtv and ATrpms communities 
include a significant number of people who have chosen to use the 
CentOS_5 series in the hope of getting systems that do not need to be 
reinstalled every few months.  I hope you won't disappoint them.


John P

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