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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...
- 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.
Hi Rile Zugo, I have just tried that and agree, deleting the monitor colour profile does restore brighness on reboot. However when I recalibrate the monitor again, it goes back to being dim as soon as the calibration is loaded. In doing the test, I noticed that this only happens on my large monitor which is natively an HDR 4K LCD TV on which I have HDR switched off so the colour calibration is sane. On my other monitor which is a normal 8 bit colour monitor, all works perfectly. Perhaps it is only on HDR monitors that there is a problem?
APBX100S Probably. HDR is a messy thing, especially on computers. Also RX 500 series has very shoddy driver support, and everyone in this thread seems to be a 500-series owner.
Not sure how to fix it without forfeiting your calibration, but for me personally the dimness got temporarily fixed when I tried turning HDR on & off with the keyboard shortcut (Win + Alt + B), but it dimmed again right away whenever I opened Windows's Display Settings.
So, if this works for you, having to re-do the keyboard shortcut trick every time you wanna go to the settings could be an okay workaround for the time being until either AMD or Windows fixes the issue.
- Thanks very much RIle Zugo - turning HDR on and off in settings does not work, but the shortcut you mentioned does! So thanks very much and that is much easier than suspending and restarting, so a tolerable workaround until a driver / W11 fix is implemented. I can't use HDR on the main monitor (HDR TV) as my second monitor is not HDR and as I understand from 2022 either both HDR or neither. Plus HDR colour calibration is wayward.
- I don't have any calibration setting on my 570 card. I used the AMD device file in windows for Display in device manager rather than generic which was the default when installing the OS. I am driving a via DP, not HDMI which I doubt are having the issue. Once the Win 11 is booted I turn on my display and it goes in ok at normal brights as what is modifying the brightness takes hold at the end of booting, even before logging in. It works, if I do it too soon. I power off the display and right back on and it good. I have no other displays connected to card.
- Thanks Ron_W399 - delaying monitor switch-on does not sort the problem on my 580 card, as you infer likely because I am connected using HDMI rather than DispalyPort.
