Red Hat Bugzilla – Bug 1276049
Major Powermanagement (battery-life) issues on HP Elitebook 745 G2 (AMD A8 Pro Radeon 5)
Last modified: 2016-07-19 15:21:16 EDT
Created attachment 1087254 [details]
Screenshot Powertop without TLP, HTML-Log Powertop with TLP active, TLP-stat report
Description of problem:
After base-install of F22 and all updates (Kernel 4.2.3) the battery-life is compared to Windows quite poor and the fan always running. Having a look in the issue with powertop reports a lot of not enabled "tuning-methods" and sme interesting issue with "Audio codec hwC0D0: ATI" (always 100%, attached Screenshot). Doing some research muting Mic and disabling HDA in alsamix stops this problem.
Installing TLP improves battery-life a little, but some issues (eg power-saving radeon) stay. Also tuning these issues with powertop does not provide a good battery-life. (powertop-report attached with enabled TLP)
Version-Release number of selected component (if applicable):
Linux localhost.localdomain 4.2.3-200.fc22.x86_64 #1 SMP Thu Oct 8 03:23:55 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
Fedora 22 changed to end-of-life (EOL) status on 2016-07-19. Fedora 22 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.
If you can reproduce this bug against a currently maintained version of
Fedora please feel free to reopen this bug against that version. If you
are unable to reopen this bug, please file a new report against the
current release. If you experience problems, please add a comment to this
Thank you for reporting this bug and we are sorry it could not be fixed.