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[Bug 1266328] Re: KWorld UB430-AF TV Tuner no longer works with kernel >= 3.10

 

Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.13 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".


Thanks in advance.


[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13-rc7-trusty/

** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

** Tags added: regression-release saucy

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https://bugs.launchpad.net/bugs/1266328

Title:
  KWorld UB430-AF TV Tuner no longer works with kernel >= 3.10

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Previously, this USB ISDB-t tuner was working fine with Ubuntu 12.04.3.
  I cleanly upgraded to Ubuntu 13.10 and it stopped working: is recognized by the kernel, but when I try to tune a frequency (using vlc or mplayer), it doesn't show anything. Furthermore, scanning with 'scan' and monitoring with femon (dvb-apps) shows 0% signal. 

  When I downgraded the kernel to 3.9.11 (using Ubuntu PPA packages), it
  worked fine.

  I suspect a regression was introduced in kernel 3.10 in v4l drivers.

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