freezing picture

[elementary]

Hi

I have installed usb DVB-S2 tuner available as tuner C in my dm7020hd, works but sometimes randomly 1-2 times in 1 hour picture is freezing to 10-20 seconds, infobar indicate no running time it is seems like freezing of dm, I can change channel, but black screen with no signal from tuner is indicated, if I do not change channel I am waiting and after 10-20 seconds picture go on ok, is there any idea to fix it?

thx

usb tuner is connected in front single usb port, I have single satellite on this one and I have updated driver from 29.12.2014

[Sundtek]

Did you try to turn off the PID filters in the sundtek control center?

[elementary]

Did you try to turn off the PID filters in the sundtek control center?

yes, here is my sundtek.conf:

Code: [Auswählen]

# sundtek configuration file - /etc/sundtek.conf
# created / modified: Jan 02 2015, 20:49h by sundtekcontrolcenter 1.4.0-20140223-r2

loglevel = max
autoupdate = off
dmhwpidfilter = off
vtuner_acceleration = on
enablenetwork = off


...
dreambox_support_fe1=on
I tryed: vtuner_acceleration = off, but it generated shorted time between freezes

[Sundtek]

Do you have this problem with freetv?

We don't have such a problem here and we're more or less using this device day and night.

[elementary]

Do you have this problem with freetv?

We don't have such a problem here and we're more or less using this device day and night.

on freetv (FTA channels) too, I tryed to connect tuner to another usb port and the problem go on

I try record and freeze picture started, if I play this one: record looks like slow motion movie in part with freezing picture 

[Sundtek]

What does following command show up:

/opt/bin/mediaclient --readsignal=0 -d /dev/dvb/adapter1/frontend0 --band UNIVERSAL

(abort with ctrl-c)

[elementary]

What does following command show up:

/opt/bin/mediaclient --readsignal=0 -d /dev/dvb/adapter1/frontend0 --band UNIVERSAL

(abort with ctrl-c)

Code: [Auswählen]

root@7020hd:~# /opt/bin/mediaclient --readsignal=0 -d /dev/dvb/adapter1/frontend
0 --band UNIVERSAL
== reading digital TV signal ==
SIGNAL: [.............................    ] ( 89%)  BER:      0 FREQ: 11836000   Hz LOCKED: YES SYS: DVB-S SYM: 27500000 FEC: FEC_5_6 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [.............................    ] ( 89%)  BER:      0 FREQ: 11836000   Hz LOCKED: YES SYS: DVB-S SYM: 27500000 FEC: FEC_5_6 MOD: QPSK VOLTAGE: H(18V) TONE: ON
....

[Sundtek]

ok, enable logging - reboot (set it to min in the sundtek controlcenter)

Also leave the signal strength command running, best would be with putty.exe
http://sundtek.de/support/putty.exe

once it happens send /var/log/mediasrv.log to kontakt at sundtek de as well as the output in putty so we can match up what happened during that time.
That way we will see if anything went wrong from the sensitivity or data delivery from the tuner or a signal breakdown.

[elementary]

logfile here: http://ulozto.sk/xknsTyuS/mediasrv-zip , freezed picture was:
start: 2015-01-03 16:41:18 [587] READ: 948460
end: 2015-01-03 16:41:39 [587] READ: 481844
summary: 21s freezed picture!!! and this happend randomly one/twice per hour

but log detected no info about freezed picture, there is a missed info whats going on

 

note: internal tuner A, B works fine without any freezing

[elementary]

info from dmesg:

Code: [Auswählen]

Jan  3 16:41:19 7020hd user.warn kernel: [ 3707.826000] audio_cdb_itb_error_isr: 102 callbacks suppressed
Jan  3 16:41:19 7020hd user.warn kernel: [ 3707.827000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:19 7020hd user.warn kernel: [ 3707.850000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:19 7020hd user.warn kernel: [ 3707.874000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:19 7020hd user.warn kernel: [ 3707.898000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:19 7020hd user.warn kernel: [ 3707.922000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:19 7020hd user.warn kernel: [ 3707.946000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:19 7020hd user.warn kernel: [ 3707.970000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:19 7020hd user.warn kernel: [ 3707.994000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:19 7020hd user.warn kernel: [ 3708.018000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:19 7020hd user.warn kernel: [ 3708.042000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:24 7020hd user.warn kernel: [ 3712.866000] audio_cdb_itb_error_isr: 200 callbacks suppressed
Jan  3 16:41:24 7020hd user.warn kernel: [ 3712.867000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:24 7020hd user.warn kernel: [ 3712.890000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:24 7020hd user.warn kernel: [ 3712.914000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:24 7020hd user.warn kernel: [ 3712.938000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:24 7020hd user.warn kernel: [ 3712.962000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:24 7020hd user.warn kernel: [ 3712.986000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:24 7020hd user.warn kernel: [ 3713.010000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:24 7020hd user.warn kernel: [ 3713.034000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:24 7020hd user.warn kernel: [ 3713.058000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:24 7020hd user.warn kernel: [ 3713.082000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:29 7020hd user.warn kernel: [ 3717.906000] audio_cdb_itb_error_isr: 200 callbacks suppressed
Jan  3 16:41:29 7020hd user.warn kernel: [ 3717.907000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:29 7020hd user.warn kernel: [ 3717.930000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:29 7020hd user.warn kernel: [ 3717.954000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:29 7020hd user.warn kernel: [ 3717.978000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:29 7020hd user.warn kernel: [ 3718.002000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:29 7020hd user.warn kernel: [ 3718.026000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:29 7020hd user.warn kernel: [ 3718.050000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:29 7020hd user.warn kernel: [ 3718.074000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:29 7020hd user.warn kernel: [ 3718.098000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:29 7020hd user.warn kernel: [ 3718.122000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:34 7020hd user.warn kernel: [ 3722.946000] audio_cdb_itb_error_isr: 200 callbacks suppressed
Jan  3 16:41:34 7020hd user.warn kernel: [ 3722.947000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:34 7020hd user.warn kernel: [ 3722.970000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:34 7020hd user.warn kernel: [ 3722.994000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:34 7020hd user.warn kernel: [ 3723.018000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:34 7020hd user.warn kernel: [ 3723.042000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:34 7020hd user.warn kernel: [ 3723.066000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:34 7020hd user.warn kernel: [ 3723.090000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:34 7020hd user.warn kernel: [ 3723.114000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:34 7020hd user.warn kernel: [ 3723.138000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:34 7020hd user.warn kernel: [ 3723.162000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:39 7020hd user.warn kernel: [ 3727.986000] audio_cdb_itb_error_isr: 200 callbacks suppressed
Jan  3 16:41:39 7020hd user.warn kernel: [ 3727.986000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:39 7020hd user.warn kernel: [ 3728.010000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:39 7020hd user.warn kernel: [ 3728.034000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:39 7020hd user.warn kernel: [ 3728.058000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:39 7020hd user.warn kernel: [ 3728.082000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:39 7020hd user.warn kernel: [ 3728.106000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:39 7020hd user.warn kernel: [ 3728.130000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:39 7020hd user.warn kernel: [ 3728.154000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:39 7020hd user.warn kernel: [ 3728.178000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:39 7020hd user.warn kernel: [ 3728.202000] audio_cdb_itb_error_isr! underflow
Jan  3 16:41:39 7020hd user.warn kernel: [ 3728.247000] ch0: unlock
Jan  3 16:41:44 7020hd user.warn kernel: [ 3732.945000] VTUNER0 ioctl
Jan  3 16:41:44 7020hd user.warn kernel: [ 3733.047000] ch0: lock
Jan  3 16:41:44 7020hd user.warn kernel: [ 3733.089000] pts_error_isr: 1 callbacks suppressed
Jan  3 16:41:44 7020hd user.warn kernel: [ 3733.090000] XVD pts error PTS 0x2e322ca5, STC 0x2e4342d4, type 0

[Sundtek]

Ok, seems like you have to monitor the CPU usage/load with "top"

I think the signal should be ok, also leave the readsignal command running as described earlier.


can you try to run following command after the freeze happened and see if it happens again after the first time (don't switch the channel once you ran this command):
/opt/bin/mediaclient -P on -d /dev/dvb/adapter1/frontend0

[elementary]

Ok, seems like you have to monitor the CPU usage/load with "top"

I think the signal should be ok, also leave the readsignal command running as described earlier.


can you try to run following command after the freeze happened and see if it happens again after the first time (don't switch the channel once you ran this command):
/opt/bin/mediaclient -P on -d /dev/dvb/adapter1/frontend0

Code: [Auswählen]

root@7020hd:~# /opt/bin/mediaclient -P on -d /dev/dvb/adapter1/frontend0
Using device: /dev/dvb/adapter1/frontend0
Hardware filter is currently disabled
changing status
done
root@7020hd:~#

after this in 5s picture is freezed permanently, dont start again, I have to switch channel...

[Sundtek]

Average CPU load?

"top"


My current guess is that there are some hickups on the CPU load and that this is causing the glitches on your side.

Just wonder where those hickups come from.

It should not be a problem of the tuner on your side.

[elementary]

cpu:

Code: [Auswählen]


  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
  584 root       5 -15 91376  10m 9460 S   23  3.5   2:41.78 mediasrv
  625 root      20   0  278m 111m  20m S    7 35.8   2:56.87 enigma2


from time to time mediasrv grow up to 45%

after last freeze, I have no audio and I have to swith between channels to get audio back, in kernel messages I found audio err info 1s before freeze.

[Sundtek]

That's because something else is consuming a lot CPU and steals it from the driver process (and all other ones).

Something that comes up occasionally, then the data is getting stuck and corrupted on the USB Bus buffers.
It does not affect internal tuners because they have a dedicated data path (not running through the CPU at all).

I really think that everything is okay from the signal input until the usb input, but something seems to pop up occasionally on your side which steals the cpu time for processing the dvb data.. (copying the dvb data from the driver into the dvb decoder hardware path interface)

You might test the tuner with SichboPVR with Windows you'd quickly see if you have the same issue there.

Maybe that problem is just related to the particular image you are using on the STB.