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ngeorgopoulos's avatar
ngeorgopoulos
Copper Contributor
Sep 28, 2023
Solved

Brightness dims after user login upon KB5030310 installation on a PC with AMD Radeon RX550/550Series

Hi everyone, I would like to report an issue after installing KB5030310 (OS Build 22621.2361) available at https://support.microsoft.com/en-au/topic/september-26-2023-kb5030310-os-build-22621-2361-p...
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  • luiz_ng's avatar
    luiz_ng
    Nov 26, 2023
    I found a temporary solution! Just turn on the HDR then set the "SDR content brightness" slider to minimum, turn off HDR and voila, no more need sleep to have normal brightness. I'm now on 23H2 with RX560.
luiz_ng's avatar
luiz_ng
Copper Contributor
Nov 26, 2023
I found a temporary solution! Just turn on the HDR then set the "SDR content brightness" slider to minimum, turn off HDR and voila, no more need sleep to have normal brightness. I'm now on 23H2 with RX560.
  • Gershu's avatar
    Gershu
    Copper Contributor
    Dec 28, 2023

    DUUUUUUUUUUDE, that totally worked for me! THANK YOU, THANK YOU, THANK YOU.


    Issue happens to me using an LG Ultragear 27GP750-B over a MSI RX 570 OC Armor with official AMD drivers (version 23.11.1) connected using a DisplayPort 1.4 in case it helps Microsoft troubleshoot.  Same as the rest, HDR on everything is OK, HDR off dims the screen after Windows login.  The mouse pointer, strangely, retains full brightness and contrast making everything even creepier.

     

    By now it's pretty safe to say this happens to people using AMD's RX 500 series.

  • ngeorgopoulos's avatar
    ngeorgopoulos
    Copper Contributor
    Nov 28, 2023
    luiz_ng's proposed workaround works for us for two (2) workstations with Radeon RX550 Series. This workaround persists any reboot so far. No more turning off and back on monitors. Thank you very much luiz_ng! Hopefully Microsoft and/or AMD will remedy the problem for good in the near future.
  • APBX100S's avatar
    APBX100S
    Copper Contributor
    Nov 27, 2023
    Thank you luiz-ng, for me that is effectively a full fix. As I have one HDR monitor and one non-HDR, I had to unplug the non-HDR one so that Windows will allow HDR; turn on HDR for the main monitor; reboot; click on "HDR" to get the submenu (does not show until rebooted); turn SDR content brightness to minimum, turn off HDR; and recalibrate both monitors. Perfect and your fix/workaround greatly appreciated. PS I am also now on W11 Pro 23H2 and run an RX580.
    • Musicalfan's avatar
      Musicalfan
      Copper Contributor
      Nov 27, 2023

      APBX100S  is this a full fix ? will the settings stay after power recycle ? or the procedudre has to be repeated with every power recycle

      • APBX100S's avatar
        APBX100S
        Copper Contributor
        Nov 28, 2023
        Hi Musicalfan, only testing will tell! For my machine, the fix is stable through a number of power cycles, but who knows whether or when a further update from MS will make it revert. Meanwhile thanks again to ngeorgopoulos for the workaround and luiz_ng for the stable solution. Hopefully these wil also allow MS to fix the next deployment through setting the SDR content brightness to minimum as a default.

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