AMD/ATI Pixel Clock Patcher

[ToastyX]

(07-28-2020 04:08 AM)superasn Wrote:  Hi ToastyX, thanks for your reply. The monitors are LG ultrawide 25UM58 both. You are correct the blurry monitor is connected via DVI-D to HDMI cable. My graphics card is RX 550 4GB.

1. One things I'd like to add is that the same thing was happening in Windows 10 then I ran your program and rebooted and it was 100% fixed. In windows at least both monitors are running perfectly with 2560x1080 res with no blur.

2. The graphics card has a displayport too. I tried to connect the second monitor via DP to HDMI cable (since the monitors only have HDMI input) but it only showed 1920 max res in both Linux and Windows. Someone told me to get a displayport to hdmi 4k active adapter so I've ordered it (awaiting delivery).

Thanks again.

DVI outputs a dual-link signal beyond 165 MHz pixel clock, but HDMI is single-link so it loses half the pixels. The patch changes that to 230 MHz, but I don't have a patch for Linux. You do need an active adapter to go beyond 165 MHz pixel clock. The other option is to reduce the refresh rate to 50 Hz to get under 165 MHz.

Modeline "2560x1080_50" 151.10 2560 2608 2640 2720 1080 1083 1093 1111 +HSync -VSync