[linux-dvb] Pinnacle PCTV 400e - bad signal

Dominik Paulus dominik at d-paulus.de
Tue Jun 5 08:37:22 CEST 2007


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Hi,

I bought a Pinnacle PCTV 400e DVB-S external (USB) TV Tuner a few days
go and am currently trying to  get it working with my Gentoo Linux.
Under Windows it works great (SNR 100%).
But under Linux I get, according to kaffeine, a really bad signal
quality - about 20% to 30%. A screenshot from the picture I get can be
found on http://img71.imageshack.us/img71/4075/screenshotzm0.png
If I manually zap to a channel (szap) and do 'mplayer
/dev/dvb/adapter0/dvr0' (My DVB device), I am getting the same picture.
szap outputs:

reading channels from file '.szap/channels.conf'
zapping to 1090 'Das Erste':
sat 0, frequency = 11836 MHz H, symbolrate 27500000, vpid = 0x0065, apid
= 0x0066 sid = 0x6dca
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
status 00 | signal 3e3e | snr 4949 | ber 00000000 | unc 00000006 |
status 1f | signal 3e3e | snr 3030 | ber 00000000 | unc 00000000 |
FE_HAS_LOCK
status 1f | signal 3e3e | snr 3030 | ber 00000000 | unc 00000000 |
FE_HAS_LOCK
status 1f | signal 3e3e | snr 3030 | ber 00000000 | unc 00000000 |
FE_HAS_LOCK
status 1f | signal 3e3e | snr 2f2f | ber 00000000 | unc 00000000 |
FE_HAS_LOCK
...

My kernel: 2.6.20-gentoo-r8
lsmod:

Module                  Size  Used by
fglrx                 647040  25
wlan_tkip              11424  2
wlan_ccmp               7104  1
fuse                   38228  0
tun                     8000  1
vboxdrv                26884  0
dvb_usb_ttusb2          5664  1
lnbp21                  1728  1 dvb_usb_ttusb2
tda826x                 2980  1 dvb_usb_ttusb2
dvb_usb                16460  1 dvb_usb_ttusb2
dvb_core               69480  1 dvb_usb
dvb_pll                11716  1 dvb_usb
tda10086                9092  1 dvb_usb_ttusb2
wlan_scan_sta          11392  1
ath_rate_sample        11936  1
ath_pci                86400  0
wlan                  188388  6
wlan_tkip,wlan_ccmp,wlan_scan_sta,ath_rate_sample,ath_pci
ath_hal               189456  3 ath_rate_sample,ath_pci
8139too                19904  0
i2c_piix4               7052  0
i2c_core               16912  6
lnbp21,tda826x,dvb_usb,dvb_pll,tda10086,i2c_piix4
ehci_hcd               28396  0
snd_hda_intel          15480  2
snd_hda_codec         157088  1 snd_hda_intel
snd_pcm                59432  2 snd_hda_intel,snd_hda_codec
snd_timer              17252  1 snd_pcm
snd                    36792  8
snd_hda_intel,snd_hda_codec,snd_pcm,snd_timer
soundcore               5504  1 snd
snd_page_alloc          7400  2 snd_hda_intel,snd_pcm
ohci_hcd               17668  0

lsusb:
Bus 003 Device 004: ID 2304:020f Pinnacle Systems, Inc. [hex]
Bus 003 Device 001: ID 0000:0000
Bus 001 Device 003: ID 0d62:a100 Darfon Electronics Corp. Benq Mouse
Bus 001 Device 001: ID 0000:0000
Bus 002 Device 001: ID 0000:0000

(lsusb -v attached)

dmesg:
dvb-usb: found a 'Pinnacle 400e DVB-S USB2.0' in cold state, will try to
load a
firmware
dvb-usb: downloading firmware from file 'dvb-usb-pctv-400e-01.fw'
usbcore: registered new interface driver dvb_usb_ttusb2
usb 3-4: USB disconnect, address 3
dvb-usb: generic DVB-USB module successfully deinitialized and
disconnected.usb 3-4: new high speed USB device using ehci_hcd and address 4
usb 3-4: configuration #1 chosen from 1 choice
dvb-usb: found a 'Pinnacle 400e DVB-S USB2.0' in warm state.
**WARNING** I2C adapter driver [Pinnacle 400e DVB-S USB2.0] forgot to
specify physical device; fix it!
dvb-usb: will pass the complete MPEG2 transport stream to the software
demuxer.
DVB: registering new adapter (Pinnacle 400e DVB-S USB2.0).
DVB: registering frontend 0 (Philips TDA10086 DVB-S)...
dvb-usb: Pinnacle 400e DVB-S USB2.0 successfully initialized and connected.

Regards
Dominik
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