support EFI rtc on arm64
Bug #1441291 reported by
dann frazier
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Trusty |
Fix Released
|
Undecided
|
dann frazier | ||
Utopic |
Fix Released
|
Undecided
|
dann frazier | ||
linux-lts-utopic (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Trusty |
Fix Released
|
Undecided
|
Unassigned | ||
Utopic |
Invalid
|
Undecided
|
Unassigned |
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 This can leave a system with a very out-of-date system clock.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.
Changed in linux (Ubuntu): | |
status: | Confirmed → Fix Released |
Changed in linux (Ubuntu Utopic): | |
status: | New → Confirmed |
Changed in linux (Ubuntu Trusty): | |
status: | New → Confirmed |
Changed in linux-lts-utopic (Ubuntu Trusty): | |
status: | New → Confirmed |
Changed in linux-lts-utopic (Ubuntu Utopic): | |
status: | New → Invalid |
Changed in linux (Ubuntu Utopic): | |
assignee: | nobody → dann frazier (dannf) |
status: | Confirmed → Fix Committed |
Changed in linux (Ubuntu Trusty): | |
status: | Confirmed → In Progress |
assignee: | nobody → dann frazier (dannf) |
Changed in linux-lts-utopic (Ubuntu): | |
status: | New → Invalid |
Changed in linux (Ubuntu Trusty): | |
status: | In Progress → Fix Committed |
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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- utopic' to 'verification- done-utopic' .
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!