XPS 9550 + 4K panel screen flicker thread.

Discussion in 'Dell XPS and Studio XPS' started by GoNz0, Aug 24, 2016.

?

4K screen flicker

  1. Yes Bios A10 (This may be a very slight flicker but still happens)

    17.4%
  2. Yes Bios A11 (probably unbearable)

    15.2%
  3. Yes Bios A12 (Still there and enough to piss you off within 5 minutes)

    54.3%
  4. No Bios A10

    10.9%
  5. No Bios A11

    4.3%
  6. No BIOS A12

    6.5%
  7. Yes Bios A06 (1.2.0)

    6.5%
  8. No Bios A06 (1.2.0)

    26.1%
  9. Yes A16 1.2.18

    0 vote(s)
    0.0%
  10. No A16 1.2.18

    23.9%
Multiple votes are allowed.
  1. PhilTheHill

    PhilTheHill Notebook Enthusiast

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    GoNz0

    Just voted but a bit confused regarding BIOS version A11; Dell's website only has A12 (1.2.13 - current) and A10 (1.2.10)

    I get driver update alerts via RSS for my 9550 and in addition to the above I've received alerts for 1.1.19 (A?? - no longer available) and 1.2.0 (A06).

    Just wondering why I didn't get an alert for A11. Was A11 a limited release (i.e. not GA) or has it been withdrawn?

    I have, at some time, used BIOS versions 1.1.19, 1.2.0 and currently 1.2.10 and am glad to say I've not experienced perceptible screen flicker on any version.
     
  2. GoNz0

    GoNz0 Laptop Engineer & Online games hosting.

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    A11 shipped on replacement motherboards and skipped the release cycle as 1.1.13 hit instead. Please check with the screen around 20% for 10 minutes with a bright background if you can :)
     
  3. Gix

    Gix Notebook Enthusiast

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    I changed my vote because I imagined A10 was 1.2.0. It will be better to put actual version numbers instead of the Dell's numbering. The last version that worked for me was A06 (1.2.0). I hate the fact that this version has a nasty bug with USB-C devices not recognized after wake from sleep, but it is way less annoying than the screen flickering of later releases.
     
  4. GoNz0

    GoNz0 Laptop Engineer & Online games hosting.

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    yeah I screwed it up didn't I, oh well I will need to redo the poll as you can't edit it.
     
  5. Bommel87

    Bommel87 Notebook Consultant

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    Just voted.

    A06 is OK. A10 was not.
     
  6. PhilTheHill

    PhilTheHill Notebook Enthusiast

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    I normally run the 9550 screen at about 50% but saw when you started the poll that it appears around "17-25%" so I've tried 10% and 20% screen brightness both on battery and plugged-in (fully charged) with a mixture of web browsing and video playback. I can honestly say my 4k 9550 screen has no perceptible flicker. (It was a refurb from the Dell Outlet back in Feb and aside from the recurring BSODs, the hardware itself has been problem free, touch wood/head quickly.)

    I am currently running
    BIOS: 01.02.10
    OS: Windows 10 Pro 10.0.10586
    Nvidia Driver: 368.81
    HD 530: 20.19.15.4454 (Latest from Dell)
    Screen Magnification: 200%
    Main Display: No ​

    Is there anything else you're doing that may be triggering the issue or is it just visible with the desktop showing?
     
  7. GoNz0

    GoNz0 Laptop Engineer & Online games hosting.

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    tends to show on brighter backgrounds but can take a while to happen, it is random.
     
  8. TDO

    TDO Notebook Consultant

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    So with bright background I noticed also the flickering with 1.2.13
    Now I am back at 1.2.0
     
  9. GoNz0

    GoNz0 Laptop Engineer & Online games hosting.

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    Can you all contact Dell support please, it is the only way we will get it sorted if more than one of us complains!
     
  10. RvN76

    RvN76 Notebook Geek

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    Hi. What did you mean by saying "took the opportunity to flash the Thunderbolt while the BIOS was upgraded"? Did you mean the "USB C controller" update in the bios?
     
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