Public bug reported:
[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with a very out-of-date system clock.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.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Fix Released
** Affects: linux-lts-utopic (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux (Ubuntu Trusty)
Importance: Undecided
Status: Confirmed
** Affects: linux-lts-utopic (Ubuntu Trusty)
Importance: Undecided
Status: Confirmed
** Affects: linux (Ubuntu Utopic)
Importance: Undecided
Status: Confirmed
** Affects: linux-lts-utopic (Ubuntu Utopic)
Importance: Undecided
Status: Invalid
** Also affects: linux (Ubuntu Utopic)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Trusty)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu)
Status: Confirmed => Fix Released
** Changed in: linux (Ubuntu Utopic)
Status: New => Confirmed
** Changed in: linux (Ubuntu Trusty)
Status: New => Confirmed
** Also affects: linux-lts-utopic (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux-lts-utopic (Ubuntu Trusty)
Status: New => Confirmed
** Changed in: linux-lts-utopic (Ubuntu Utopic)
Status: New => Invalid
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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:
New
Status in linux source package in Trusty:
Confirmed
Status in linux-lts-utopic source package in Trusty:
Confirmed
Status in linux source package in Utopic:
Confirmed
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with a very out-of-date system clock.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
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