Bug 1276049 - Major Powermanagement (battery-life) issues on HP Elitebook 745 G2 (AMD A8 Pro Radeon 5)
Major Powermanagement (battery-life) issues on HP Elitebook 745 G2 (AMD A8 Pr...
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
x86_64 Linux
unspecified Severity high
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Assigned To: Kernel Maintainer List
Fedora Extras Quality Assurance
Depends On:
  Show dependency treegraph
Reported: 2015-10-28 09:53 EDT by Flo
Modified: 2016-07-19 15:21 EDT (History)
7 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2016-07-19 15:21:16 EDT
Type: Bug
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Screenshot Powertop without TLP, HTML-Log Powertop with TLP active, TLP-stat report (68.36 KB, application/zip)
2015-10-28 09:53 EDT, Flo
no flags Details

  None (edit)
Description Flo 2015-10-28 09:53:14 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

How reproducible:

Actual results:

Expected results:

Additional info:
Comment 1 Fedora End Of Life 2016-07-19 15:21:16 EDT
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no longer maintained, which means that it will not receive any further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

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