"ACPI PCC probe failed" message is an error message when it should be debug
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Low
|
Colin Ian King | ||
Vivid |
Fix Released
|
Low
|
Colin Ian King |
Bug Description
[SRU Justification]
Users of Ubuntu Vivid are seeing a seemingly alarming kernel failure message "ACPI PCC probe failed" when in fact it is just a debug message informing the kernel developers that a probe for an ACPI PCC mailbox was not successful (which is just a debug only message) and not a failure one needs to worry about. This message is asked about frequently on askubuntu.com, so it is alarming quite a few users, c.f. : http://
This fix landed in Wily, and the driver with the alarming message only affects Vivid.
[Fix]
Upstream commit efd756daf4ddae3
[Testcase]
Boot a machine without the PCC feature, without the fix one sees the error message in the kernel log. With the fix, this error is now a warning. Note: This only affects Vivid.
Changed in linux (Ubuntu): | |
importance: | Undecided → Low |
assignee: | nobody → Colin Ian King (colin-king) |
description: | updated |
Changed in linux (Ubuntu): | |
status: | Incomplete → Triaged |
Changed in linux (Ubuntu): | |
status: | Triaged → In Progress |
Changed in linux (Ubuntu): | |
assignee: | Colin Ian King (colin-king) → Max Payne (lopliok-lopliok) |
status: | In Progress → Confirmed |
Changed in linux (Ubuntu): | |
status: | Confirmed → Incomplete |
Changed in linux (Ubuntu Vivid): | |
status: | New → Fix Committed |
Changed in linux (Ubuntu Vivid): | |
importance: | Undecided → Low |
assignee: | nobody → Colin Ian King (colin-king) |
Changed in linux (Ubuntu): | |
status: | In Progress → Fix Released |
This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:
apport-collect 1524930
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.