Dell XPS 15 (Skylake) 9550 Owner's Lounge

Discussion in 'Dell XPS and Studio XPS' started by T2050, Oct 30, 2015.

  1. 100won

    100won Notebook Enthusiast

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    I use tb15 (thunderbolt) to charge (always 100%). Bios 1.3 fan ~3600 (can hear noise at midnight)

    Bios 1.2.25 fan ~2400
    Cannot hear noise.
     
  2. 100won

    100won Notebook Enthusiast

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  3. Don16

    Don16 Notebook Enthusiast

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    Is this confirmed issue or just happening to you? I would downgrade bios to 1.2.25 ver. if it has lower temps. Any more info on this?
     
  4. 100won

    100won Notebook Enthusiast

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    You can check yourself. I re-upgrade and downgrade many times :(

    BIOS 1.2.29 bug with dock, BIOS 1.3.0 fixed it but PCH temp and m.2 temp's high.
     
  5. Don16

    Don16 Notebook Enthusiast

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    How do i downgrade Bios please? Do i just upgrade bios but with older version?
     
  6. 100won

    100won Notebook Enthusiast

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  7. pressing

    pressing Notebook Deity

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    @100won

    Strange activity with the new BIOS. A few things I might check that tend to change or reset sometimes on the 9550, particularly with an update or crash:

    Windows Power Options (look at individual detailed settings)
    Dell Command-Power Manager
    Your undervolt
    SpeedShift EPP

    Dell might have changed some power settings. Also, if you have enabled any functions in power options, it is possible Dell disabled them again with the new BIOS so you might need to reenable. To confirm that your settings are still sticking you can run the following and compare to older results:

    powercfg -q
     
  8. 100won

    100won Notebook Enthusiast

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    Windows Power Options (look at individual detailed settings) <- Default settings
    Dell Command-Power Manager <- I don't install it.
    Your undervolt <- -140mV (same last BIOS).
    SpeedShift EPP <- enabled by throtte stop.

    I try to re-upgrade sometimes but (1.3.0 BIOS) temp is higher than 1.2.25
     
  9. _sem_

    _sem_ Notebook Evangelist

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    Did you happen to notice any increased CPU activity with 1.3.0 in Task Manager, like audio driver or such?
     
  10. 100won

    100won Notebook Enthusiast

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    Only temp problem. :D
     
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