Reverse PRIME Now Works Nicely On Ubuntu 24.10

[pWe00Iri3e7Z9lHOX2Qx]

This is great! Now I can use the UHD 630 to render the desktop etc on Wayland and the A2000 to games or softwares then needs GPGPU.

You use case sounds like regular prime, which has worked for years.

[bkdwt]

This is great! Now I can use the UHD 630 to render the desktop etc on Wayland and the A2000 to games or softwares then needs GPGPU.

[joaquinvacas]

I have an AMD Ryzen 5700U laptop which had 512mb allocated to the iGPU, and I was able to change it with UniversalAMDFormBrowser (no controls available in BIOS) .. not sure if you have AMD or Intel, but maybe there's an equivalent tool?

Wanted to do that on my Elitebook 845 G9 (6650U) as VRAM outage is a real thing.
But it seems is unsupported. Shows an empty menu and firmware only shows 256 or 512MB.

"Yeah but that's not the way dynamic VRAM works and..."

I totally understand that and there is a real benefit on having a locked portion of your RAM to your iGPU so no memory pressure situations could hurt performance.

[lem79]

I've been having some issues with regular PRIME lately, basically it's using the iGPU VRAM until it comes full (512mb which I can't change) then slows right down to where the desktop becomes unusable

I have an AMD Ryzen 5700U laptop which had 512mb allocated to the iGPU, and I was able to change it with UniversalAMDFormBrowser (no controls available in BIOS) .. not sure if you have AMD or Intel, but maybe there's an equivalent tool?

[pWe00Iri3e7Z9lHOX2Qx]

The Reverse Prime name makes me think of display outputs hooked to the dGPU and rendering things on-demand on the iGPU (which obviously wouldn't be a common thing).

[FireBurn]

I've been having some issues with regular PRIME lately, basically it's using the iGPU VRAM until it comes full (512mb which I can't change) then slows right down to where the desktop becomes unusable

[phoronix]

Phoronix: Reverse PRIME Now Works Nicely On Ubuntu 24.10

For those making use of "reverse PRIME" setups where you have a primary NVIDIA discrete GPU while monitors are connected to Intel integrated graphics as the secondary GPU, such configurations should be working nicely with the upcoming Ubuntu 24.10 release under Wayland. This support is also likely to be back-ported for Ubuntu 24.04 LTS...

https://www.phoronix.com/news/Ubuntu-24.10-Reverse-PRIME