Re: DVBSky T980C CI issues (kernel 4.0.x)

[Torbjorn Jansson <torbjorn.jansson@mbox200.swipnet.se>]

that worked a bit better.

first some dmesg output for reference:
[   15.002224] cx25840 11-0044: loaded v4l-cx23885-avcore-01.fw firmware 
(16382 bytes)
[   15.019548] cx23885_dvb_register() allocating 1 frontend(s)
[   15.021444] cx23885[0]: cx23885 based dvb card
[   15.169994] i2c i2c-10: Added multiplexed i2c bus 12
[   15.172514] si2168 10-0064: Silicon Labs Si2168 successfully attached
[   15.232989] si2157 12-0060: Silicon Labs Si2147/2148/2157/2158 
successfully attached
[   15.235445] DVB: registering new adapter (cx23885[0])
[   15.237911] cx23885 0000:07:00.0: DVB: registering adapter 0 frontend 
0 (Silicon Labs Si2168)...
[   15.383847] sp2 9-0040: CIMaX SP2 successfully attached
[   15.414270] DVBSky T980C MAC address: 00:17:42:54:09:85
[   15.416377] cx23885_dev_checkrevision() Hardware revision = 0xa5
[   15.418433] cx23885[0]/0: found at 0000:07:00.0, rev: 4, irq: 19, 
latency: 0, mmio: 0xf6e00000

[   21.612743] dvb_ca adapter 0: DVB CAM detected and initialised 
successfully


[   61.890098] si2168 10-0064: found a 'Silicon Labs Si2168-A20'
[   62.000956] si2168 10-0064: downloading firmware from file 
'dvb-demod-si2168-a20-01.fw'
[   67.113044] si2168 10-0064: firmware version: 2.0.35
[   67.121721] si2157 12-0060: found a 'Silicon Labs Si2158-A20'
[   67.147054] si2157 12-0060: downloading firmware from file 
'dvb-tuner-si2158-a20-01.fw'
[   68.155814] si2157 12-0060: firmware version: 2.1.9



first test:
looks like it locks on and this time also the dvb-t2 muxes.
BUT output of w_scan for each found mux is like this:
770000: (time: 03:31.238)         signal ok:    QAM_AUTO f = 770000 kHz 
I999B8C999D999T999G999Y999P0 (0:0:0)
         Info: no data from PAT after 2 seconds
         deleting (QAM_AUTO f = 770000 kHz I999B8C999D999T999G999Y999P0 
(0:0:0))

and finally:
ERROR: Sorry - i couldn't get any working frequency/transponder
  Nothing to scan!!


and w_scan never outputs the channel names as it normally does at the end.

second test:
unplug CA module and reinsert.
this is normally needed before i get picture with other programs than 
w_scan.

this did not result in any change, w_scan still outputs "no data from 
PAT after 2 seconds" for each found frequency.


third test:
remove CA module and repeat.
Success!
both t2 muxes was found and w_scan showed what looked like the complete 
channel list.


forth test:
now that it is working, reinsert CA module and retest.
problem is back.
same error as previous tests with CA module inserted "no data from PAT 
after 2 seconds" on each locked on frequency.



a comment regarding the CA module.
no matter what driver i have used, the dvbsky binary blob driver or 
linux-media driver or kernels built in driver all of them have had minor 
CA issues.

at every boot i need to first tune to a dvb channel then unplug the CA 
module and reinsert it, when this is done the channel starts working.
if i don't do this manually i will never get a picture.

i guess this could be an application issue too since sending a CA_RESET 
also seems to fix it, but because of how the program i use work doing a 
good test is a bit hard.



On 2016-03-05 06:36, Olli Salonen wrote:
> Hi Torbjörn,
>
> Apply the recent patch from Shuah to fix that recent oops:
>
> https://patchwork.linuxtv.org/patch/33353/
>
> It's not yet in the media_tree, but I reckon it'll be there shortly...
>
> Cheers,
> Olli
> On 5 Mar 2016 1:09 a.m., "Torbjorn Jansson" <
> torbjorn.jansson@mbox200.swipnet.se> wrote:
>
>> using a 4.2 kernel i get a bit further but now i'm getting a completely
>> different oops:
>> [  181.077662] BUG: unable to handle kernel NULL pointer dereference at
>> 0000000000000010
>> [  181.077723] IP: [<ffffffffa05c0fd9>]
>> v4l_vb2q_enable_media_source+0x9/0x40 [videodev]
>>
>> latest git code is too unstable for testing this.
>> i will instead try to redo my test by rebuilding the kernel rpms and
>> include the patch to fix the CI.
>>
>> the point of the test i was trying to do was to try the newer version of
>> the firmware and see if that improved things.
>>
>>
>> On 2016-03-04 05:42, Olli Salonen wrote:
>>
>>> Hi,
>>>
>>> You probably have kernel 4.3 or newer? I've seen this same happening
>>> as well. It's probable that the media_build will be updated in the
>>> coming days to fix this, but so far I did not found an easy way out.
>>> Kernel 4.2 or older works fine though.
>>>
>>> Hans Verkuil is the resident media_build guru, so maybe he can help
>>> you with that...
>>>
>>> Cheers,
>>> -olli
>>>
>>>
>>> On 4 March 2016 at 00:03, Torbjorn Jansson
>>> <torbjorn.jansson@mbox200.swipnet.se> wrote:
>>>
>>>> found something, modprobe results in the following dmesg message:
>>>>
>>>> frame_vector: exports duplicate symbol frame_vector_create (owned by
>>>> kernel)
>>>>
>>>> every time i do a modprobe of cx23885
>>>> what does this mean?
>>>>
>>>> On 2016-03-03 22:58, Torbjorn Jansson wrote:
>>>>
>>>>>
>>>>> i'm having a bit of a problem testing the changed firmware on my t980c
>>>>> card.
>>>>>
>>>>> complied the code from media_tree and i get the usb card to work with
>>>>> those modules but for some reason modprobe of cx23885 results in:
>>>>> # modprobe cx23885
>>>>> modprobe: ERROR: could not insert 'cx23885': Exec format error
>>>>>
>>>>> all the other modules work just fine, i'm not sure what i'm doing wrong.
>>>>>
>>>>>
>>>>> On 2016-03-03 19:22, Torbjorn Jansson wrote:
>>>>>
>>>>>>
>>>>>> i was about to ask how to easiest see what firmware i was running
>>>>>> without rebooting when i realized i already have it in this mail
>>>>>> thread ;)
>>>>>>
>>>>>> all of the firmware i'm running is the ones that came from dvbsky
>>>>>> directly in this file:
>>>>>> http://www.dvbsky.net/download/linux/dvbsky-firmware.tar.gz
>>>>>>
>>>>>> i suspect i should go thru all of the firmware files i use since if one
>>>>>> is bad the other ones is probably also bad.
>>>>>>
>>>>>> i assume i also should also check: dvb-tuner-si2158-a20-01.fw
>>>>>> what version is a good one? i have found 2 different files:
>>>>>>
>>>>>> the one i current usefrom dvbsky, also same as OpenELEC fw repo uses
>>>>>> with md5sum:
>>>>>> 8e98d25d6219e235b519a3c47dbfa856  dvb-tuner-si2158-a20-01.fw
>>>>>>
>>>>>> and then i found another one at
>>>>>> http://palosaari.fi/linux/v4l-dvb/firmware/Si2158/Si2158-A20/
>>>>>> 0cba7ce61c1411cbe7f22c0746e24e33  dvb-tuner-si2158-a20-01.fw
>>>>>> this file is a bit smaller.
>>>>>>
>>>>>> i will retest with the new firmware you suggested and see what happens.
>>>>>>
>>>>>>
>>>>>> On 2016-03-03 12:02, Olli Salonen wrote:
>>>>>>
>>>>>>>
>>>>>>> Hi Jurgen, Torbjörn,
>>>>>>>
>>>>>>> I've noticed that there is currently a small confusion about the
>>>>>>> firmware versions for the Si2168-A20 demodulator. This is used in the
>>>>>>> older versions of DVBSky T680C (TechnoTrend CT2-4650 CI) and DVBSky
>>>>>>> T980C (TechnoTrend CT2-4500 CI).
>>>>>>>
>>>>>>> The version 2.0.5 does not support PLP handling and seems to work very
>>>>>>> badly with the Linux driver - at least for me. Version 2.0.35 on the
>>>>>>> other hand seems to find all DVB-T/T2 channels for me just fine with
>>>>>>> both dvbv5-scan and w_scan (devices used for this test: TechnoTrend
>>>>>>> CT2-4650 CI and TechnoTrend CT2-4500 CI new version).
>>>>>>>
>>>>>>> Versions used:
>>>>>>> dvbv5-scan version 1.7.0
>>>>>>> w_scan version 20150111 (compiled for DVB API 5.10)
>>>>>>>
>>>>>>> So if you are running these Si2168-A20 based devices, make sure you've
>>>>>>> got the firmware 2.0.35 that can be downloaded for example here:
>>>>>>>
>>>>>>>
>>>>>>> http://palosaari.fi/linux/v4l-dvb/firmware/Si2168/Si2168-A20/32e06713b33915f674bfb2c209beaea5/
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Cheers,
>>>>>>> -olli
>>>>>>>
>>>>>>> On 20 February 2016 at 19:20, Jurgen Kramer <gtmkramer@xs4all.nl>
>>>>>>> wrote:
>>>>>>>
>>>>>>>>
>>>>>>>> Hi,
>>>>>>>>
>>>>>>>> On Sat, 2016-02-20 at 16:57 +0100, Torbjorn Jansson wrote:
>>>>>>>>
>>>>>>>>>
>>>>>>>>> i have tested your patch with my dvbsky dvb-t2 card.
>>>>>>>>> testing was done by compiling a custom kernel with your patch
>>>>>>>>> included.
>>>>>>>>> test was done against fedora 22 4.3.4-200 kernel
>>>>>>>>>
>>>>>>>>> with the patch included the CI slot is found.
>>>>>>>>> so there is some progress for sure
>>>>>>>>> -----
>>>>>>>>> [   10.189408] cx25840 11-0044: loaded v4l-cx23885-avcore-01.fw
>>>>>>>>> firmware
>>>>>>>>> (16382 bytes)
>>>>>>>>> [   10.206683] cx23885_dvb_register() allocating 1 frontend(s)
>>>>>>>>> [   10.207968] cx23885[0]: cx23885 based dvb card
>>>>>>>>> [   10.224306] i2c i2c-10: Added multiplexed i2c bus 12
>>>>>>>>> [   10.225633] si2168 10-0064: Silicon Labs Si2168 successfully
>>>>>>>>> attached
>>>>>>>>> [   10.243310] si2157 12-0060: Silicon Labs Si2147/2148/2157/2158
>>>>>>>>> successfully attached
>>>>>>>>> [   10.244560] DVB: registering new adapter (cx23885[0])
>>>>>>>>> [   10.245807] cx23885 0000:07:00.0: DVB: registering adapter 0
>>>>>>>>> frontend
>>>>>>>>> 0 (Silicon Labs Si2168)...
>>>>>>>>> [   10.417402] sp2 9-0040: CIMaX SP2 successfully attached
>>>>>>>>> [   10.447120] DVBSky T980C MAC address: 00:17:42:54:09:85
>>>>>>>>> [   10.448844] cx23885_dev_checkrevision() Hardware revision = 0xa5
>>>>>>>>> [   10.450550] cx23885[0]/0: found at 0000:07:00.0, rev: 4, irq: 19,
>>>>>>>>> latency: 0, mmio: 0xf6e00000
>>>>>>>>>
>>>>>>>>> later when tuning:
>>>>>>>>>
>>>>>>>>> [   67.728109] si2168 10-0064: found a 'Silicon Labs Si2168-A20'
>>>>>>>>> [   67.802203] si2168 10-0064: downloading firmware from file
>>>>>>>>> 'dvb-demod-si2168-a20-01.fw'
>>>>>>>>> [   68.968336] si2168 10-0064: firmware version: 2.0.5
>>>>>>>>> [   68.977071] si2157 12-0060: found a 'Silicon Labs Si2158-A20'
>>>>>>>>> [   69.961057] si2157 12-0060: downloading firmware from file
>>>>>>>>> 'dvb-tuner-si2158-a20-01.fw'
>>>>>>>>> [   70.969094] si2157 12-0060: firmware version: 2.1.9
>>>>>>>>> ----
>>>>>>>>>
>>>>>>>>> but using dvbv5-scan to scan it doesn't find any channel.
>>>>>>>>> all i get is this:
>>>>>>>>> ----
>>>>>>>>> Scanning frequency #1 770000000
>>>>>>>>>            (0x00) Signal= -114.00dBm
>>>>>>>>> Scanning frequency #2 754000000
>>>>>>>>>            (0x00) Signal= -27.00dBm C/N= 32.50dB
>>>>>>>>> Scanning frequency #3 546000000
>>>>>>>>>            (0x00) Signal= -25.00dBm C/N= 33.75dB
>>>>>>>>> Scanning frequency #4 650000000
>>>>>>>>>            (0x00) Signal= -18.00dBm C/N= 36.00dB
>>>>>>>>> Scanning frequency #5 522000000
>>>>>>>>>            (0x00) Signal= -28.00dBm C/N= 33.00dB
>>>>>>>>> ----
>>>>>>>>>
>>>>>>>>> so something else is broken too.
>>>>>>>>>
>>>>>>>>> I have been using the patches for a few days. So far everything
>>>>>>>> works
>>>>>>>> great (using MythTV). Scanning with dvbv5_scan does indeed not work
>>>>>>>> (never did for me). w_scan works though.
>>>>>>>>
>>>>>>>> Can these patches please be included in the stable kernels ?
>>>>>>>>
>>>>>>>> Jurgen
>>>>>>>>
>>>>>>>>
>>>>>>>> On 2016-02-16 21:20, Olli Salonen wrote:
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Hi all,
>>>>>>>>>>
>>>>>>>>>> Found the issue and submitted a patch.
>>>>>>>>>>
>>>>>>>>>> The I2C buses for T980C/T2-4500CI were crossed when CI registration
>>>>>>>>>> was moved to its own function.
>>>>>>>>>>
>>>>>>>>>> Cheers,
>>>>>>>>>> -olli
>>>>>>>>>>
>>>>>>>>>> On 31 January 2016 at 10:55, Torbjorn Jansson
>>>>>>>>>> <torbjorn.jansson@mbox200.swipnet.se> wrote:
>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> this ci problem is the reason i decided to buy the CT2-4650 usb
>>>>>>>>>>> based device
>>>>>>>>>>> instead.
>>>>>>>>>>> but the 4650 was a slightly newer revision needing a patch i
>>>>>>>>>>> submitted
>>>>>>>>>>> earlier.
>>>>>>>>>>> and also this 4650 device does not have auto switching between
>>>>>>>>>>> dvb-t and t2
>>>>>>>>>>> like the dvbsky card have, so i also need an updated version of
>>>>>>>>>>> mythtv.
>>>>>>>>>>>
>>>>>>>>>>> my long term wish is to not have to patch things or build custom
>>>>>>>>>>> kernels or
>>>>>>>>>>> modules.
>>>>>>>>>>> so anything done to improve the dvbsky card or the 4650 is much
>>>>>>>>>>> appreciated.
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> On 2016-01-28 20:42, Olli Salonen wrote:
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> Hi Jürgen & Mauro,
>>>>>>>>>>>>
>>>>>>>>>>>> I did bisect this and it seems this rather big patch broke it:
>>>>>>>>>>>>
>>>>>>>>>>>> 2b0aac3011bc7a9db27791bed4978554263ef079 is the first bad
>>>>>>>>>>>> commit
>>>>>>>>>>>> commit 2b0aac3011bc7a9db27791bed4978554263ef079
>>>>>>>>>>>> Author: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
>>>>>>>>>>>> Date:   Tue Dec 23 13:48:07 2014 -0200
>>>>>>>>>>>>
>>>>>>>>>>>>          [media] cx23885: move CI/MAC registration to a separate
>>>>>>>>>>>> function
>>>>>>>>>>>>
>>>>>>>>>>>>          As reported by smatch:
>>>>>>>>>>>>              drivers/media/pci/cx23885/cx23885-dvb.c:2080
>>>>>>>>>>>> dvb_register()
>>>>>>>>>>>> Function too hairy.  Giving up.
>>>>>>>>>>>>
>>>>>>>>>>>>          This is indeed a too complex function, with lots of stuff
>>>>>>>>>>>> inside.
>>>>>>>>>>>>          Breaking this into two functions makes it a little bit
>>>>>>>>>>>> less hairy.
>>>>>>>>>>>>
>>>>>>>>>>>>          Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung
>>>>>>>>>>>> .com>
>>>>>>>>>>>>
>>>>>>>>>>>> It's getting a bit late, so I'll call it a day now and have a
>>>>>>>>>>>> look at
>>>>>>>>>>>> the patch to see what goes wrong there.
>>>>>>>>>>>>
>>>>>>>>>>>> Cheers,
>>>>>>>>>>>> -olli
>>>>>>>>>>>>
>>>>>>>>>>>> On 28 January 2016 at 20:57, Jurgen Kramer <gtmkramer@xs4all.nl
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> wrote:
>>>>>>>>>>>>>
>>>>>>>>>>>>> Hi Olli,
>>>>>>>>>>>>>
>>>>>>>>>>>>> On Thu, 2016-01-28 at 19:26 +0200, Olli Salonen wrote:
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> Hi Jürgen,
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> Did you get anywhere with this?
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> I have a clone of your card and was just starting to look
>>>>>>>>>>>>>> at this
>>>>>>>>>>>>>> issue. Kernel 3.19 seems to work ok, but 4.3 not. Did you
>>>>>>>>>>>>>> have any
>>>>>>>>>>>>>> time to try to pinpoint this more?
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> No, unfortunately not. I have spend a few hours adding
>>>>>>>>>>>>> printk's but it
>>>>>>>>>>>>> did not get me any closer what causes the issue. This really
>>>>>>>>>>>>> needs
>>>>>>>>>>>>> investigation from someone who is more familiar with linux
>>>>>>>>>>>>> media.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Last thing I tried was the latest (semi open) drivers from
>>>>>>>>>>>>> dvbsky on a
>>>>>>>>>>>>> 4.3 kernel. Here the CI and CAM registered successfully.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Greetings,
>>>>>>>>>>>>> Jurgen
>>>>>>>>>>>>>
>>>>>>>>>>>>> Cheers,
>>>>>>>>>>>>>> -olli
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> On 12 September 2015 at 10:02, Jurgen Kramer <gtmkramer@xs4
>>>>>>>>>>>>>> all.nl>
>>>>>>>>>>>>>> wrote:
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> On Fri, 2015-09-11 at 22:01 +0200, Torbjorn Jansson
>>>>>>>>>>>>>>> wrote:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> On 2015-08-23 19:50, Jurgen Kramer wrote:
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> On Sun, 2015-07-12 at 12:38 +0200, Jurgen Kramer
>>>>>>>>>>>>>>>>> wrote:
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> I have been running a couple of DVBSky T980C's with
>>>>>>>>>>>>>>>>>> CIs with
>>>>>>>>>>>>>>>>>> success
>>>>>>>>>>>>>>>>>> using an older kernel (3.17.8) with media-build and
>>>>>>>>>>>>>>>>>> some
>>>>>>>>>>>>>>>>>> added patches
>>>>>>>>>>>>>>>>>> from the mailing list.
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> I thought lets try a current 4.0 kernel to see if I
>>>>>>>>>>>>>>>>>> no longer
>>>>>>>>>>>>>>>>>> need to be
>>>>>>>>>>>>>>>>>> running a custom kernel. Everything works just fine
>>>>>>>>>>>>>>>>>> except
>>>>>>>>>>>>>>>>>> the CAM
>>>>>>>>>>>>>>>>>> module. I am seeing these:
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> [  456.574969] dvb_ca adapter 0: Invalid PC card
>>>>>>>>>>>>>>>>>> inserted :(
>>>>>>>>>>>>>>>>>> [  456.626943] dvb_ca adapter 1: Invalid PC card
>>>>>>>>>>>>>>>>>> inserted :(
>>>>>>>>>>>>>>>>>> [  456.666932] dvb_ca adapter 2: Invalid PC card
>>>>>>>>>>>>>>>>>> inserted :(
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> The normal 'CAM detected and initialised' messages
>>>>>>>>>>>>>>>>>> to do show
>>>>>>>>>>>>>>>>>> up with
>>>>>>>>>>>>>>>>>> 4.0.8
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> I am not sure what changed in the recent kernels,
>>>>>>>>>>>>>>>>>> what is
>>>>>>>>>>>>>>>>>> needed to
>>>>>>>>>>>>>>>>>> debug this?
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> Jurgen
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> Retest. I've isolated one T980C on another PC with
>>>>>>>>>>>>>>>>> kernel
>>>>>>>>>>>>>>>>> 4.1.5, still the same 'Invalid PC card inserted :('
>>>>>>>>>>>>>>>>> message.
>>>>>>>>>>>>>>>>> Even after installed today's media_build from git no
>>>>>>>>>>>>>>>>> improvement.
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> Any hints where to start looking would be
>>>>>>>>>>>>>>>>> appreciated!
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> cimax2.c|h do not seem to have changed. There are
>>>>>>>>>>>>>>>>> changes to
>>>>>>>>>>>>>>>>> dvb_ca_en50221.c
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> Jurgen
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> did you get it to work?
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> No, it needs a thorough debug session. So far no one
>>>>>>>>>>>>>>> seems able to
>>>>>>>>>>>>>>> help...
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> i got a dvbsky T980C too for dvb-t2 reception and so
>>>>>>>>>>>>>>>> far the only
>>>>>>>>>>>>>>>> drivers that have worked at all is the ones from dvbsky
>>>>>>>>>>>>>>>> directly.
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> i was very happy when i noticed that recent kernels
>>>>>>>>>>>>>>>> have support
>>>>>>>>>>>>>>>> for it
>>>>>>>>>>>>>>>> built in but unfortunately only the modules and
>>>>>>>>>>>>>>>> firmware loads
>>>>>>>>>>>>>>>> but then
>>>>>>>>>>>>>>>> nothing actually works.
>>>>>>>>>>>>>>>> i use mythtv and it complains a lot about the signal,
>>>>>>>>>>>>>>>> running
>>>>>>>>>>>>>>>> femon also
>>>>>>>>>>>>>>>> produces lots of errors.
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> so i had to switch back to kernel 4.0.4 with mediabuild
>>>>>>>>>>>>>>>> from
>>>>>>>>>>>>>>>> dvbsky.
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> if there were any other dvb-t2 card with ci support
>>>>>>>>>>>>>>>> that had
>>>>>>>>>>>>>>>> better
>>>>>>>>>>>>>>>> drivers i would change right away.
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> one problem i have with the mediabuilt from dvbsky is
>>>>>>>>>>>>>>>> that at
>>>>>>>>>>>>>>>> boot the
>>>>>>>>>>>>>>>> cam never works and i have to first tune a channel,
>>>>>>>>>>>>>>>> then remove
>>>>>>>>>>>>>>>> and
>>>>>>>>>>>>>>>> reinstert the cam to get it to work.
>>>>>>>>>>>>>>>> without that nothing works.
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> and finally a problem i ran into when i tried
>>>>>>>>>>>>>>>> mediabuilt from
>>>>>>>>>>>>>>>> linuxtv.org.
>>>>>>>>>>>>>>>> fedora uses kernel modules with .ko.xz extension so
>>>>>>>>>>>>>>>> when you
>>>>>>>>>>>>>>>> install the
>>>>>>>>>>>>>>>> mediabuilt modulels you get one modulename.ko and one
>>>>>>>>>>>>>>>> modulename.ko.xz
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> before a make install from mediabuild overwrote the
>>>>>>>>>>>>>>>> needed
>>>>>>>>>>>>>>>> modules.
>>>>>>>>>>>>>>>> any advice on how to handle this now?
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>