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December 24th, 2020 10:00
XPS 8940, adding a non-Dell GPU graphics card
Hi there,
Wondering if I could get some help. I have a Dell XPS 8940 i7, 32GB of RAM, 500W power supply. I have swapped the GTX 2060 for a Radeon RX560 (temporarily). However, when I boot the machine up, it doesn't recognize the card. I assume it's because it's a non Dell GPU.
I have tried both the HDMI and the Display Port connections, and the screen goes blank. When I connect back to the onboard GPU and hit the Device Manager, it doesn't see the card whatsoever. I have gone into the BIOS and disabled the secure boot, however being the newer graphical BIOS I am not sure what the settings should actually get Windows to see this card. Any ideas out there? Really appreciate your help!
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RoHe
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December 24th, 2020 11:00
Google...
Got another PC available that has a Legacy boot option available in UEFI where you can install that card and try it without/with Legacy enabled?
BTW: Are you sure that RX 560 card actually works?
BTW2: Don't understand why you pulled a nice GTX 2060 and installed the RX 560, even if only temporarily. Why not just use the GTX 2060 until...?
westtech77
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December 24th, 2020 11:00
Hi Ron,
I wish I knew how to answer that question. I’m not sure but will do some digging. The card is installed, and no extra power connection needed, it’s a plug and play or should be anyway!
RoHe
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December 24th, 2020 11:00
Does the RX560 card work with UEFI or does it only work with Legacy BIOS? Legacy is no longer an available option on new PCs like the XPS 8940...
Does this card require an extra PCI-e 6- or 8-pin power connection directly to the PSU and did you connect it?
redxps630
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December 24th, 2020 15:00
Recent AMD GPUs have a hybrid ROM which contains two images: A legacy video BIOS (vBIOS) image and a compressed graphics output protocol (GOP) driver image. In theory this allows the card to work well on both legacy systems (which will use the vBIOS image) and more modern systems with a UEFI compatible pre-boot firmware architecture (which use the GOP driver).
However some UEFI implementations cannot cope with the hybrid BIOS, they try to load the GOP driver and fail, hanging at boot with a blank screen.