[SOLVED] How to use a 2K monitor with Radeon HD 5450 ?

[heartkiIIer]

I have a Gateway PC with Radeon HD 5450 graphics. And I just recently purchased an LG ultrawide 2k monitor (3440x1440) for work, but i wanted to use it for my PC as well. But my PC doesn't support more than 1920x1080p, doesn't have display port (only HDMI), and I have tried several ways to create custom resolutions.

1. AMD Radeon Settings doesn't have create custom resolutions tab under the Display section.
2. I can see the 3440x1440 option under the Detailed Resolutions section in CRU and have created new ones based off it but after I restart PC, I don't see 3440x1440 listed under Display Resolution in my Windows Display Settings to change to.
3. Edited the Registry and added the 3440x1440 to the 2D file path as provided by Catalyst Control Center.

None of the above has worked for me and I came across this article in which they mentioned using 5450 with a 4k monitor. https://viewfinderdesign.co.uk/?p=217
I really want to be able to use my PC with my monitor without the really stretched 1080p display on my 1440p monitor. Any help is appreciated!

 

[kerberos_20]

youre probably limited by pixel clock, i believe back then 165MHz was limit
your resolution 3440x1440 would need much higher pixel clock
no idea your display parameters, but minimum pixel clock for this resolution is 306.24MHz

AMD/ATI Pixel Clock Patcher 1.4.14

Download AMD/ATI Pixel Clock Patcher 1.4.14 for free. Latest Version. AMD/ATI Pixel Clock Patcher modifies the AMD/ATI video driver to allow higher resolutions and refresh rates by removing the 165 MHz pixel clock limit for single-link DVI and HDMI, the 330 MHz limit for dual-link DVI, and the...

sourceforge.net

here patch to remove that pixel clock limit,

now you will be still limited by bandwith
hdmi 1.4 has 10.20Gbit bandwith limit

https://www.monitortests.com/pixelclock.php

Bandwidth Calculator

Free Stream Bandwidth Calculator helps you ensure all your equipment is compatible with your video system’s requirements. Try it now

k.kramerav.com

here pixel clock and bandwith calculators, which should help you in case native monitor settings are outside of bandwith limit
i did quick look and bandwith for this resolution is beween 9.14Gbit and 10.94Gbit, so it should be possible to fit in

 

[heartkiIIer]

youre probably limited by pixel clock, i believe back then 165MHz was limit
your resolution 3440x1440 would need much higher pixel clock
no idea your display parameters, but minimum pixel clock for this resolution is 306.24MHz

AMD/ATI Pixel Clock Patcher 1.4.14

Download AMD/ATI Pixel Clock Patcher 1.4.14 for free. Latest Version. AMD/ATI Pixel Clock Patcher modifies the AMD/ATI video driver to allow higher resolutions and refresh rates by removing the 165 MHz pixel clock limit for single-link DVI and HDMI, the 330 MHz limit for dual-link DVI, and the...

sourceforge.net

here patch to remove that pixel clock limit,

now you will be still limited by bandwith
hdmi 1.4 has 10.20Gbit bandwith limit

https://www.monitortests.com/pixelclock.php

Bandwidth Calculator

Free Stream Bandwidth Calculator helps you ensure all your equipment is compatible with your video system’s requirements. Try it now

k.kramerav.com

here pixel clock and bandwith calculators, which should help you in case native monitor settings are outside of bandwith limit
i did quick look and bandwith for this resolution is beween 9.14Gbit and 10.94Gbit, so it should be possible to fit in

i did the pixel patch via ati/amd patcher and now i am able to see 3440x1440p in my windows display options and even 3840x2160 which says 'recommended' next to it. However, after selecting the 3440 option, my screen went black for a few seconds and then came back on to my original 1920x1080p resolution. Any idea how to fix that?

 

[heartkiIIer]

i did the pixel patch via ati/amd patcher and now i am able to see 3440x1440p in my windows display options and even 3840x2160 which says 'recommended' next to it. However, after selecting the 3440 option, my screen went black for a few seconds and then came back on to my original 1920x1080p resolution. Any idea how to fix that?

I restarted the graphics driver couple times and now it works! i get 2k resolution like i wanted! Thanks so much!