kernel-packages team mailing list archive

[Luis Henriques <luis.henriques@xxxxxxxxxxxxx>]

This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
trusty' to 'verification-done-trusty'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: verification-needed-trusty

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1441291

Title:
  support EFI rtc on arm64

Status in linux package in Ubuntu:
  Fix Released
Status in linux-lts-utopic package in Ubuntu:
  Invalid
Status in linux source package in Trusty:
  Fix Committed
Status in linux-lts-utopic source package in Trusty:
  Fix Released
Status in linux source package in Utopic:
  Fix Released
Status in linux-lts-utopic source package in Utopic:
  Invalid

Bug description:
  [Impact]
  ARM64 EFI platforms have no real time clock support. This can leave a system with a very out-of-date system clock. It can be somewhat mitigated by using NTP, but that still leaves issues in early boot (inaccurate last mount times, etc).

  [Test Case]
  if dmesg | grep -q 'rtc-efi: setting system clock'; then
    PASS
  else
    FAIL
  fi

  [Regression Risk]
  This enables a new driver only on ARM64, so the risk should be low to other platforms. The upstream patches do refactor the rtc-efi driver but, that driver was previously only compilable on ia64, which isn't supported by Ubuntu.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1441291/+subscriptions