Custom Resolution Utility (CRU)

[ToastyX]

(10-17-2016 08:37 AM)astro_noms Wrote:  I'm running a R9 270x with two LG ultrawides - a UM57 and a UM 58 on Windows 10. When I hook either of them up to the card with the HDMI cable, they work fine at 2560x1080. However, since the card only has one HDMI output, one of the monitors has to go through either a DP-HDMI or a DVI-HDMI cable. Neither one of those options (or using a DP-HDMI adapter and an HDMI cable) gives me anything above 1920x1080. The only way I can get it to work is to use the integrated GPU on my motherboard, which in turn makes it impossible to use things like Photoshop without unplugging one of the monitors (I get a GPU error and things crash the moment I start to do anything other than open a file).

So, CRU is the only option that's left. But. I've tried using CRU to set a custom resolution, but the new resolution isn't showing up in the list of resolutions in the display options of in the "All Modes" section of the display adapter properties. I've tried various refresh rates, I've tried resetting CRU and using the Radeon software to set a custom resolution (apparently the settings used for the other monitor are "not compatible" with this one, which is *identical). If I switch the cables, the monitors behave in exactly the same manner.

I'm 95% sure I'm doing something wrong, but I have no idea what that could be. Does anyone have any idea how to make this work?

You need to read the part about pixel clock limits in the first post because that's the problem.