Public bug reported: [SRU Justification][Vivid]
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://askubuntu.com/questions/708215/1-037533-acpi-pcc-probe-failed. This fix landed in Wily, and the driver with the alarming message only affects Vivid. [Fix] Upstream commit efd756daf4ddae3cec2404c4e0b680b7cfdd6a45 ("ACPI / PCC: Use pr_debug() for debug messages in pcc_init()") [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. ** Affects: linux (Ubuntu) Importance: Low Assignee: Colin Ian King (colin-king) Status: Incomplete ** Changed in: linux (Ubuntu) Importance: Undecided => Low ** Changed in: linux (Ubuntu) Assignee: (unassigned) => Colin Ian King (colin-king) ** Description changed: [SRU Justification][Vivid] - Users of Ubuntu wily are seeing a seemingly alarming kernel failure + 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://askubuntu.com/questions/708215/1-037533-acpi-pcc-probe-failed. This fix landed in Wily, and the driver with the alarming message only affects Vivid. [Fix] Upstream commit efd756daf4ddae3cec2404c4e0b680b7cfdd6a45 ("ACPI / PCC: Use pr_debug() for debug messages in pcc_init()") [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. -- 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/1524930 Title: "ACPI PCC probe failed" message is an error message when it should be debug Status in linux package in Ubuntu: Incomplete Bug description: [SRU Justification][Vivid] 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://askubuntu.com/questions/708215/1-037533-acpi-pcc-probe- failed. This fix landed in Wily, and the driver with the alarming message only affects Vivid. [Fix] Upstream commit efd756daf4ddae3cec2404c4e0b680b7cfdd6a45 ("ACPI / PCC: Use pr_debug() for debug messages in pcc_init()") [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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1524930/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
