Forum Discussion
Brightness dims after user login upon KB5030310 installation on a PC with AMD Radeon RX550/550Series
- 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.
MB: Asus Prime Z790-P
GPU: AMD Radeon RX 580 (connected though DP)
After uninstalling KB5030310 brightness was restored to normal levels. I don't find that option to change colour depth to 12bpc. Maybe monitor related? (Mine is MSI Optix MAG342CQR)
This morning on restarting it was dim again and only brighten by toggling another display setting which immediately fix it. If this persist I likely uninstall the update.
Is that what you did as I don't have brightness bar anywhere to move either in Win 11 or the AMD Software I have running.
- I just uninstalled the update. I'll wait for a fix before I reinstall it.
My pc doesn't have a brightness bar as it is a desktop pc. I use the app F.lux to manage my brightness on my pc but I quickly ruled out any part in this issue. Same here with RX590. Sometimes the screen stays bright after login, but sometimes it is dimmed. I can enforce the dimming when going to System Settings -> Display (in this case the screen always dims). What fixes it for the current session is to switch of the monitor and switch it back again.
Changing the color depth didn't help for me (changed from 10 bpc to 8 bpc).
Monitor is attached via Display Port. I've also tried another cable. No luck.
I have a second monitor attached via HDMI. On this monitor the issue doesn't occur.
Hoping for a fix from MS and/or AMD soon.
- Yeah, its not the depth as again this AM the screen is Dimm and toggling the depth even back to 10 from 12 causes what appears to be a refresh and returns bright again. Other setting option appears to do the same thing that cause a refresh. I was going to remove the preview package but its not a easy in Win 11 as in other older version. Go figure...lol
You can try activating (if available) HDR setting Control Panel -> System -> Display -> HDR. This setting would eliminate the dimming effect but at the cost of making all colors appear abnormally saturated. HDR setting for my case is unavailable now that I have rollbacked back the problematic windows update but it gets available and inactive after its installation. When I activated HDR dimming would be gone but color saturation really annoyed me so that I preferred to uninstall the update.
Hopefully this workaround may be helpful to someone.
Nikos
ngeorgopoulos Thanks for the hint, but HDR is not an option. I can activate HDR only for 1 monitor (the one which is connected via DP), but not for the other, so the colors look totally different between both monitors. I still haven't understood what's so fancy with HDR...