All of lore.kernel.org
 help / color / mirror / Atom feed
* re: pctv452e
@ 2012-07-04 16:04 Steve Hill
  2012-07-04 16:22 ` pctv452e Antti Palosaari
  0 siblings, 1 reply; 37+ messages in thread
From: Steve Hill @ 2012-07-04 16:04 UTC (permalink / raw)
  To: linux-media

 >> Ps. Steve, could you please give me full version of kernel which
 >> works with pctv452e?

I think it was 2.6.37-1-kirkwood from Debian which I was using (this is 
an ARM system).

 > As the new DVB-USB fixes many bugs I ask you to test it. I converted 
 > pctv452e driver for you:
 >
 > http://git.linuxtv.org/anttip/media_tree.git/shortlog/refs/heads/pctv452e
 >
 > Only PCTV device supported currently, not TechnoTrend at that time.

Can I ask why it only works on the PCTV devices?  I was under the 
impression that the TechnoTrend hardware was identical?


If you are able to provide any pointers as to where the TechnoTrend 
support is broken (or what debugging I should be turning on to figure 
out where it is broken) then that would be helpful.

Thanks.

-- 

  - Steve


^ permalink raw reply	[flat|nested] 37+ messages in thread
* pctv452e
@ 2012-07-02 16:33 Steve Hill
  2012-07-03  7:46 ` pctv452e Marx
  2013-07-06 13:29 ` pctv452e Antti Palosaari
  0 siblings, 2 replies; 37+ messages in thread
From: Steve Hill @ 2012-07-02 16:33 UTC (permalink / raw)
  To: linux-media


I've been using a Technotrend TT 3600 USB DVB-S2 receiver for a couple 
of years, which has (largely) been working fine under the S2-liplianin 
pctv452e driver.  I've been aware of a lot of documented problems with 
running this receiver under the 3.x kernel, so I've stuck with the 2.6 
series kernels.

Unfortunately I've now had to upgrade to the 3.2.0 kernel for other 
unrelated reasons, and it seems that the device is more or less unusable 
under this kernel.  With the stock 3.2.0 kernel, the driver produces 
numerous I2C errors and is quite unreliable.  The I2C errors seem to be 
produced exclusively as a result of stb_6100_read_reg() reading register 
F, and notably all calls to stb6100_read_regs() seem to succeed, so I've 
replaced the stb_6100_read_reg() function with a call to 
stb6100_read_regs(), so it reads all the registers and then returns the 
requested one, rather than reading just the requested register.  This 
seems to make the I2C errors disappear.

However, the card is still very unreliable - after about 5 minutes of 
receiving a channel (using MythTV), it breaks.  No errors logged in 
dmesg, but MythTV logs:

DevRdB(/dev/dvb/adapter0/frontend0) Error: Poll giving up
DVBSH(/dev/dvb/adapter0/frontend0) Error: Device error detected
DVBRec(7:/dev/dvb/adapter0/frontend0) Error: Stream handler died 
unexpectedly.


Can anyone give me any pointers that might help?  I've searched and 
searched and all I can see if people saying that it won't work since the 
DVB-S2 code was integrated into the kernel tree, but I've not seen 
anyone try to figure out _why_ it won't work.

Thanks.

-- 

  - Steve


^ permalink raw reply	[flat|nested] 37+ messages in thread
end of thread, other threads:[~2013-07-06 13:30 UTC | newest]

Thread overview: 37+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-07-04 16:04 pctv452e Steve Hill
2012-07-04 16:22 ` pctv452e Antti Palosaari
2012-07-04 18:46   ` pctv452e Marx
2012-07-04 18:53   ` pctv452e André Weidemann
2012-07-04 19:01     ` pctv452e Antti Palosaari
2012-07-05 13:14       ` pctv452e Marx
2012-07-05 14:23         ` pctv452e Antti Palosaari
2012-07-06  6:13           ` pctv452e Marx
2012-07-06  9:34             ` pctv452e Antti Palosaari
2012-07-06 11:04               ` pctv452e Marx
2012-07-06 18:24                 ` pctv452e Antti Palosaari
2012-07-06 22:23                 ` pctv452e Marx
2012-07-07  0:00                   ` pctv452e Antti Palosaari
2012-07-07 23:07                     ` pctv452e Marx
2012-07-08 12:32                       ` pctv452e Antti Palosaari
2012-07-09  6:24                         ` pctv452e Marx
2012-07-09  8:42                           ` pctv452e Antti Palosaari
2012-07-09 16:44                             ` pctv452e Marx
2012-07-09 17:38                               ` pctv452e Antti Palosaari
2012-07-09 17:46                                 ` pctv452e Antti Palosaari
2012-07-10  6:39                                   ` pctv452e Marx
2012-07-10  9:33                                     ` pctv452e Antti Palosaari
2012-07-10 21:08                                       ` pctv452e Marx
2012-07-10 23:13                                         ` pctv452e Antti Palosaari
2012-07-11  6:25                                           ` pctv452e Marx
2012-07-11 10:00                                             ` pctv452e Antti Palosaari
2012-07-09 18:21                               ` pctv452e poma
2012-07-10  6:43                                 ` pctv452e Marx
2012-07-10 15:51                                   ` pctv452e poma
2012-07-10 15:58                                     ` pctv452e Devin Heitmueller
2012-07-10 22:54                                       ` pctv452e poma
2012-08-03 16:56   ` pctv452e Steve Hill
  -- strict thread matches above, loose matches on Subject: below --
2012-07-02 16:33 pctv452e Steve Hill
2012-07-03  7:46 ` pctv452e Marx
2012-07-03 23:04   ` pctv452e Antti Palosaari
2012-07-04  7:51     ` pctv452e Marx
2013-07-06 13:29 ` pctv452e Antti Palosaari

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.