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Message #111772
[Bug 1441291] Re: support EFI rtc on arm64
** Changed in: linux (Ubuntu Utopic)
Status: Confirmed => Fix Committed
** Changed in: linux (Ubuntu Utopic)
Assignee: (unassigned) => dann frazier (dannf)
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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:
Fix Committed
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 This can leave a system with a very out-of-date system clock.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.
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References