UHD620 better ig-platform-id

[rossna]

For those of us with the i7-8550u version, this ig-platform-id gives us better graphics performance:

ig-platform-id: 0900A53E
platform-id: A53E0000

Source

The old platform-id (00001659) is basically patching our iGPU to act as an HD520, which it is not.

[egore24]

Good tip. Trying it now. Thanks!

Just a note,
platform-id: A53E0000 should be device-id: A53E0000

[rolsanmordua]

@rossna brightness controls seem to break for me with this change

[rolsanmordua]

Assuming no other change was necessary, I ran the Geekbench 5 compute test and my Metal score dropped ≈250 points from before

[jkbuha]

Yeah had the same issue too. It's because the existing BRT6 SSDT is mapped to device-id 1659, so the PNLF fails to catch that. The SSDT overrides for the GPU will need to be patched as well.

Regardless though, there is a performance drop with this new id.

Best config layout I've optimised so far can be found on my post here: https://www.tonymacx86.com/threads/guide-dell-xps-13-9360-on-macos-sierra-10-12-x-lts-long-term-support-guide.213141/page-332

If anyone has any better performance suggestions please reach out.

[mankot14]

Yeah had the same issue too. It's because the existing BRT6 SSDT is mapped to device-id 1659, so the PNLF fails to catch that. The SSDT overrides for the GPU will need to be patched as well.

Regardless though, there is a performance drop with this new id.

Best config layout I've optimised so far can be found on my post here: https://www.tonymacx86.com/threads/guide-dell-xps-13-9360-on-macos-sierra-10-12-x-lts-long-term-support-guide.213141/page-332

If anyone has any better performance suggestions please reach out.

Hey, I saw your post on tonymac. I have the i7-8550u with UHD 620 variant just as you do. The best setting for graphics I've found are as follows:
AAPL,ig-platform-id = 00001B59
device-id = 16590000
I got a score of just over 4900 on battery power for OpenCL in Geekbench5 with this.

[linianqing]

Yeah had the same issue too. It's because the existing BRT6 SSDT is mapped to device-id 1659, so the PNLF fails to catch that. The SSDT overrides for the GPU will need to be patched as well.
Regardless though, there is a performance drop with this new id.
Best config layout I've optimised so far can be found on my post here: https://www.tonymacx86.com/threads/guide-dell-xps-13-9360-on-macos-sierra-10-12-x-lts-long-term-support-guide.213141/page-332
If anyone has any better performance suggestions please reach out.

Hey, I saw your post on tonymac. I have the i7-8550u with UHD 620 variant just as you do. The best setting for graphics I've found are as follows:
AAPL,ig-platform-id = 00001B59
device-id = 16590000
I got a score of just over 4900 on battery power for OpenCL in Geekbench5 with this.

Is your brightness controls ok?

[mankot14]

Yeah had the same issue too. It's because the existing BRT6 SSDT is mapped to device-id 1659, so the PNLF fails to catch that. The SSDT overrides for the GPU will need to be patched as well.
Regardless though, there is a performance drop with this new id.
Best config layout I've optimised so far can be found on my post here: https://www.tonymacx86.com/threads/guide-dell-xps-13-9360-on-macos-sierra-10-12-x-lts-long-term-support-guide.213141/page-332
If anyone has any better performance suggestions please reach out.

Hey, I saw your post on tonymac. I have the i7-8550u with UHD 620 variant just as you do. The best setting for graphics I've found are as follows:
AAPL,ig-platform-id = 00001B59
device-id = 16590000
I got a score of just over 4900 on battery power for OpenCL in Geekbench5 with this.

Is your brightness controls ok?

I went back to AAPL,ig-platform-id = 00001659 and device-id = 16590000 because that's the only configuration that allowed me to have external display AND full functionality of the laptop display.

[kaedea]

Yeah had the same issue too. It's because the existing BRT6 SSDT is mapped to device-id 1659, so the PNLF fails to catch that. The SSDT overrides for the GPU will need to be patched as well.

Regardless though, there is a performance drop with this new id.

Best config layout I've optimised so far can be found on my post here: https://www.tonymacx86.com/threads/guide-dell-xps-13-9360-on-macos-sierra-10-12-x-lts-long-term-support-guide.213141/page-332

If anyone has any better performance suggestions please reach out.

Hey, I saw your post on tonymac. I have the i7-8550u with UHD 620 variant just as you do. The best setting for graphics I've found are as follows:
AAPL,ig-platform-id = 00001B59
device-id = 16590000
I got a score of just over 4900 on battery power for OpenCL in Geekbench5 with this.

Did your external HDMI display work with 1B59?

[kaedea]

For those of us with the i7-8550u version, this ig-platform-id gives us better graphics performance:

ig-platform-id: 0900A53E
platform-id: A53E0000

Source

The old platform-id (00001659) is basically patching our iGPU to act as an HD520, which it is not.

Can not boot with this config.