[Kernel] Release Meeting 2012-03-02

Leann Ogasawara leann.ogasawara at canonical.com
Fri Mar 2 04:51:56 UTC 2012

Overall status is reported at the first link below.  Burn down for
Precise Beta-2 is at the second link below.  Burndown for the cycle is
at the third link:

 * https://wiki.ubuntu.com/KernelTeam/ReleaseStatus/Precise
 * http://status.ubuntu.com/ubuntu-precise/canonical-kernel-distro-team-ubuntu-12.04-beta-2.html
 * http://status.ubuntu.com/ubuntu-precise/canonical-kernel-distro-team.html

== What was done engineering wise? ==

We received a Beta Freeze exception last week and uploaded the
linux-3.2.0-17.27 Ubuntu kernel in time for the Beta-1 release.  This
contained a critical fix which has allowed us to enable plain RC6 by
default for Sandy Bridge [1].

We have pushed any remaining Beta-1 work items out to Beta-2.  None of
which are release critical.

[1] https://wiki.ubuntu.com/Kernel/PowerManagementRC6

== What's about to land that might impact the other teams? ==

We have been queuing quite a few patches during the Beta Freeze.  Some
of the more notable changes include rebases to v3.2.7, v3.2.8, and
v3.2.9 upstream stable releases, an updated set of AppArmor patches,
support for Intel Lynx Point devices, and a few misc config changes for

We intend to upload 3.2.0-18.28 as soon as possible.  However, we are
coordinating this upload with an upload of gcc.  Thus, we will wait to
upload until gcc is built and in the archive.

=== Release Notes ===

== Summary of bugs working on by team (reasonably reliable) ==

Aside from the immediate bugs/issues we resolved this week, we're also
keeping an eye on the following bugs:

 * Bug:818830 - [Sandy Bridge] serious power regression from kernel 3.0.0-6 to 3.0.0-7 (rc6 disabled)
 * Bug:855124 - XRANDR operations very slow unless (phantom) HDMI1 disabled
 * Bug:836250 - Intel Corporation Centrino Ultimate-N 6300 poor networking
 * Bug:898127 - system hangs and errors at /build/buildd/linux-3.2.0/arch/x86/kernel/apic/ipi.c:113 default_send_IPI_mask_logical+0xdc/0xf0()
 * Bug:904297 - System crashed with latest updates
 * Bug:898112 - Xen performance issue: backport acpi-cpufreq.v4 branch to 3.2 kernel for Precise
 * Bug:912992 - [snb-m-gt2+] Primary laptop display not working, external monitor works fine
 * Bug:922460 - BUG: unable to handle kernel NULL pointer dereference at 00000004
 * Bug:937378 - Patched kernel with rc6 enabled shutdowns
 * Bug:935965 - RC6 enabled causes severe graphics corruption
 * Bug:911059 - Intel wireless randomly drops connection

== Dependencies on other teams, blocking items ==

== Issues? ==

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