** Changed in: linux (Ubuntu Jammy)
Status: In Progress => Fix Committed
** Changed in: linux (Ubuntu Kinetic)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/2008527
Title:
[SRU]With "Performance per Watt (DAPC)" enabled in the BIOS, Bootup
time is taking longer than expected
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Jammy:
Fix Committed
Status in linux source package in Kinetic:
Fix Committed
Bug description:
SRU Justification:
[Impact]
A Dell system that has a profile setting of "Performance Per Watt
(DAPC)" enabled in the BIOS and running Ubuntu-22.04 does not boot
into OS as quickly as expected.
How reproducible:
Steps to Reproduce:
1. On the Dell system enable "Performance Per Watt (DAPC)" from BIOS.
2. Install Ubuntu-22.04
3. Boot into OS
4. Check the bootup time
Expected results:
OS should boot normally and need to consume less bootup time
[Fix]
13fdbc8b8da6 cpufreq: ACPI: Defer setting boost MSRs
[Test Plan]
1. Set system profile as "Performance Per Watt (DAPC)" from BIOS setting
2. Install Ubuntu-22.04
3. Boot into OS
4. Check the bootup time
[Where problems could occur]
Regression risk: low to medium.
[Other Info]
Jammy
https://code.launchpad.net/~mreed8855/ubuntu/+source/linux/+git/jammy/+ref/lp_2008527_dapc
Kinetic
https://code.launchpad.net/~mreed8855/ubuntu/+source/linux/+git/kinetic/+ref/lp_2008527_dapc_kinetic
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