larsivi
11-05-2015, 08:17 AM
I have a Dell XPS 15 with Nvidia Optimus hardware, but sofar I've only been using the Intel bit. The laptop itself has a 4k screen (but I run it with normal FullHD resolution), and I have a FullHD and a 4k screen attached via the DisplayLink.
Except for the issues and limitations mentioned, I've seen one additional problem here, and that was when I attached the external 4k screen. From time to time (some times per day), the screen blacks out for a short time before coming back. The screen itself pops up an info box saying something about what the resolution must be, suggesting to me that when this happens it detects a less than 4K resolution.
I know that the Intel card has a horizontal max resolution of 8192 (which is the main reason for not using 4k on the laptop screen), but this should still be plenty enough for all 3 screens. I didn't actually see anything relevant in any of the system logs I checked though.
I don't very often use the laptop screen, so I may try see how things work with it disabled.
DL support tool output is attached.
Except for the issues and limitations mentioned, I've seen one additional problem here, and that was when I attached the external 4k screen. From time to time (some times per day), the screen blacks out for a short time before coming back. The screen itself pops up an info box saying something about what the resolution must be, suggesting to me that when this happens it detects a less than 4K resolution.
I know that the Intel card has a horizontal max resolution of 8192 (which is the main reason for not using 4k on the laptop screen), but this should still be plenty enough for all 3 screens. I didn't actually see anything relevant in any of the system logs I checked though.
I don't very often use the laptop screen, so I may try see how things work with it disabled.
DL support tool output is attached.