Happened to me yesterday. I have an old 4K TV, every component I used to connect to it had HDMI 2.0+ capabilities. Neither laptop nor Steam Deck would output 4K60, only 4K30. Tried getting another cable and a hub, same result. And I know that my Chromecast outputs 4K60 to this TV, so I was extra confused. In my desperation, asked GPT-5 what was I missing, and it plainly told me that those old Samsung TVs turn off HDMI 2.0 support unless you explicitly turn it on in TV settings under “UHD Color”. Apparently Chromecast was doing chroma subsampling, but computers refused and wanted full HDMI 2.0 bandwidth…
That’s rather cool, glad to hear it worked. My experience with it is often:
Where can I find this setting to change for *this thing*?
“Gladly! I know how frustrating this process scan be!
First, open the settings page,
find the page that says “*\thing setting* and change it there”
There is no page like that
" You’re absolutely right!”
Happened to me yesterday. I have an old 4K TV, every component I used to connect to it had HDMI 2.0+ capabilities. Neither laptop nor Steam Deck would output 4K60, only 4K30. Tried getting another cable and a hub, same result. And I know that my Chromecast outputs 4K60 to this TV, so I was extra confused. In my desperation, asked GPT-5 what was I missing, and it plainly told me that those old Samsung TVs turn off HDMI 2.0 support unless you explicitly turn it on in TV settings under “UHD Color”. Apparently Chromecast was doing chroma subsampling, but computers refused and wanted full HDMI 2.0 bandwidth…
That’s rather cool, glad to hear it worked. My experience with it is often:
Where can I find this setting to change for *this thing*? “Gladly! I know how frustrating this process scan be! First, open the settings page, find the page that says “*\thing setting* and change it there” There is no page like that " You’re absolutely right!”