Samsung 49-inch Odyssey OLED G95SC 240 Hz Gaming Monitor
Closed this issue · 3 comments
Hello, I see in the guide that the older version of this monitor, the non-OLED variant, is supported at its full specification of 5120x1440@120 Hz when using HDMI output (presumably via HDMI input vs HDMI -> DisplayPort), though the USB Type-C DisplayPort mode hasn't been confirmed.
I am trying to utilize the new OLED variant, and am running into issues.
- On another, much newer and more capable machine, over HDMI (with both the HDMI input and the micro HDMI input), the OLED Q9 reports a maximum resolution of 3840x1080@120 Hz (or 3840x2160@60 Hz); this is the same as on the HP Dev One via HDMI output. The manual with the display indicates in the mode table that the full spec is available via HDMI, though I could not make this work, and other reports online seem to indicate the same, as well as some language in the manual that suggests that DisplayPort is optimal for this full specification.
- On this other machine, using a USB Type-C cable with the DisplayPort input on the monitor, I am able to operate at the maximum spec: 5120x1440@240 Hz.
- On the HP Dev One, using the same USB Type-C cable, the machine does not recognize the display when attached to either USB Type-C port.
The HP Dev One manual claims to support SuperSpeed USB 10 Gbps, which by my account seems insufficient to drive the display at full spec without possibly some compression protocol; I am curious if the non-OLED variant works via USB Type-C DisplayPort, or in general what others' experiences are with the OLED variant and the HP Dev One, as it seems it ought to be technically possible to drive it at 5120x1440@120 Hz via HDMI or USB Type-C DisplayPort (though the monitor may not actually support the HDMI method at this resolution (and/or frequency) for whatever reason).
Thank you for this documentation repository! It is very helpful.
I suppose I should note, both machines are running Debian 12 Bookworm (and Testing/Sid, and Experimental in the case of very few packages), with Sway (Wayland).
Well, I'm not sure what changed, but after trying again, 5120x1440@120 Hz is working via USB Type-C DisplayPort connection. I had connected HDMI, which is still limited, and simultaneously connected the DP connection, and it was recognized and started working, and continues to work after disconnecting HDMI.
However, upon disconnecting the DP connection, it has not come back automatically, not even repeating the scenario (simultaneous HDMI).
Using a different cable, rated for "8K@60Hz," it seems the HP Dev One now consistently recognizes and drives this display at 5120x1440@120 Hz. Still cannot get any device to drive it via HDMI at full spec or even full resolution.