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Strange usb errors with TBS 5680 DVBC

Strange usb errors with TBS 5680 DVBC

Postby digitalija » Tue Feb 18, 2014 1:35 am

hi!
my PC configurations:
----------------------------
procesor :AMD FX x8 8350
MBO : gigabyte 990fxa-ud3

NOte: I tried to conect tuners on separate and different linux ubuntu computers but same problem !

TBS 5680 usb DVBC tuner
latest driver installed : v140210
dvb-usb-tbsqbox-id5680.fw

Linux OS : Ubuntu 12.04. 3.8.0-29-generic #42~precise1-Ubuntu SMP Wed Aug 14 16:19:23 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

problem :
---------------
I was planning to use 3 or 4 tuners on same linux PC but no luck.

When just one usb 5680 DVBC tuner is connected in PC ussualy all is OK ( no errors) , but
when I connect second usb 5680 DVBC tuner on PC strange usb errors appears :


[80773.577248] usb 2-4: new high-speed USB device number 3 using ehci-pci
[80788.639707] usb 2-4: device descriptor read/64, error -110
[80803.805846] usb 2-4: device descriptor read/64, error -110
[80804.021135] usb 2-4: new high-speed USB device number 4 using ehci-pci
[80819.083595] usb 2-4: device descriptor read/64, error -110
[80834.249786] usb 2-4: device descriptor read/64, error -110
[80834.465040] usb 2-4: new high-speed USB device number 5 using ehci-pci
[80839.468776] usb 2-4: device descriptor read/8, error -110
[80844.571939] usb 2-4: device descriptor read/8, error -110
[80844.787089] usb 2-4: new high-speed USB device number 6 using ehci-pci
[80849.790835] usb 2-4: device descriptor read/8, error -110
[80854.894125] usb 2-4: device descriptor read/8, error -110
[80854.997499] hub 2-0:1.0: unable to enumerate USB device on port 4
[80855.312452] usb 5-4: new full-speed USB device number 2 using ohci_hcd
[80870.398850] usb 5-4: device descriptor read/64, error -110
[80885.588949] usb 5-4: device descriptor read/64, error -110
[80885.828114] usb 5-4: new full-speed USB device number 3 using ohci_hcd
[80900.914487] usb 5-4: device descriptor read/64, error -110

above is log with 2 TBS 5680 DVBC usb tuneras are connected on PC ( only one is initialized OK and it works )

Ofcourse, the same errors appears when more TBS 5680 DVBC tuners are connected. ( I bought 5 of them )

I tried also connect tuners via USB HUB indirectly to PC but no luck - same problem.

Sometimes ,even with only one tuner connected -errors appears.


I google around and figure out that error has to do with low power supplay via usb ports. ( Very strange because tbs usb tuners have own power supplay )

I cant figure ot what is the problem

thanx in advance

Cheers!
digitalija
 
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Joined: Sat Feb 15, 2014 6:59 am

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