← Back to team overview

kernel-packages team mailing list archive

[Bug 1255370] Missing required logs.


This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1255370

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

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

You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.

  MacBookPro11,1 (Late 2013 Haswell) has no sound

Status in “linux” package in Ubuntu:

Bug description:
  I installed Ubuntu 13.10 on a new MacBook Pro (Late 2013, 13-inch
  Haswell retina).  The speakers did not work after installation, and
  after I fixed it, it would not work after suspend.  It turns out some
  of the flags were not set correctly.  I can fix these problems but it
  would be nice to have them fixed at installation.

  The problem can be seen in the GPIO section in
  /proc/asound/card1/codec#0 (card0 is for HDMI).  After boot, the GPIO
  flags for IO[0] were

  GPIO: io=6, o=2, i=0, unsolicited=1, wake=1
    IO[0]: enable=1, dir=1, wake=0, sticky=0, data=0, unsol=0

  If data were set to 1, sound would work!  I fixed this by installing
  alsa-tools and adding to /etc/rc.local a line:

  hda-verb /dev/snd/hwC1D0 0x1 set_gpio_data 1

  After resuming from suspend, the GPIO flags for IO[0] became

  GPIO: io=6, o=2, i=0, unsolicited=1, wake=1
    IO[0]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0

  Here, three flags were set to 0.  I fixed this by adding to
  /etc/pm/sleep.d/99_myfix a few lines:

  case "$1" in
  		hda-verb /dev/snd/hwC1D0 0x1 set_gpio_mask 1
  		sleep 1
  		hda-verb /dev/snd/hwC1D0 0x1 set_gpio_direction 1
  		sleep 1
  		hda-verb /dev/snd/hwC1D0 0x1 set_gpio_data 1

To manage notifications about this bug go to: