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[Bug 898347] Re: syslog flooded with "hci_scodata_packet: hci0 SCO packet for unknown connection handle"

 

Rolf Leggewie, this bug was reported a while ago and there hasn't been
any activity in it recently. We were wondering if this is still an
issue? If so, could you please test for this with the latest development
release of Ubuntu? ISO images are available from
http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in
the development release from a Terminal
(Applications->Accessories->Terminal), as it will automatically gather
and attach updated debug information to this report:

apport-collect -p linux <replace-with-bug-number>

Also, could you please test the latest upstream kernel available following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the daily folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.11-rc5

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.

** Tags added: needs-kernel-logs needs-upstream-testing

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/898347

Title:
  syslog flooded with "hci_scodata_packet: hci0 SCO packet for unknown
  connection handle"

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  I am experiencing unstable bluetooth connections between a USB
  bluetooth dongle and headset.  I get a ton of lines like

  Dec  1 04:09:51 localhost kernel: [  264.372205] hci_scodata_packet:
  hci0 SCO packet for unknown connection handle 65261

  in syslog.  The bluetooth connection also usually breaks down about 10
  seconds into a Skype call.  I cannot know if the two phenomena are
  actually related.

  Dec  1 04:09:52 localhost kernel: [  264.392198] hci_scodata_packet: hci0 SCO packet for unknown connection handle 65072
  Dec  1 04:09:52 localhost kernel: [  264.402199] hci_scodata_packet: hci0 SCO packet for unknown connection handle 65493
  Dec  1 04:10:26 localhost bluetoothd[1756]: Audio connection got disconnected
  Dec  1 04:10:26 localhost pulseaudio[1936]: ratelimit.c: 4802 events suppressed
  Dec  1 04:10:35 localhost pulseaudio[1936]: ratelimit.c: 428 events suppressed

  I believe this is a Ubuntu-induced regression, I was unable to
  reproduce the problem with a mainline kernel today.

  confirmed affected: vmlinuz-2.6.32-35-generic (latest lucid kernel)
  confirmed affected: vmlinuz-3.0.0-13-generic
  apparently unaffected: vmlinuz-3.2.0-999-generic from today (or rather Nov 30th)

  FWIW, the mainline kernel seems to have a stable bluetooth connection
  but syslog gets flooded there as well.

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