Unfortunately, PCI-E bridge configuration is very hardware-dependent, there's no standartized protocol for software control of these devices, realistically only BIOS or UEFI firmware can manage them. ![]() Unfortunately, during last few years firmware vendors and hardware suppliers started to exclude VGA arbitration support from PCI-E bridges and their initialization code in firmware (because it's no longer required by Windows 10 and modern versions of Linux). VGA resources are: 0xA0000 – 0xC0000 memory range, 0x3B0 – 0x3DF I/O ports range. You can view which resources (memory and I/O ports) are assigned to PCI-E devices in your system using Linux command "lspci -vv | more". AMD GPU cards have no such problem, as their drivers don't depend on legacy VGA resources to be assigned to the GPU device. If you want to use this device, you will need to disable one of the other devices on this system."). ![]() nVidia GPUs don't work on some motherboards lacking support for VGA arbitration (nVidia drivers report "Code 12" error: "This device cannot find enough free resources that it can use. ![]() Besides that, we have switched to generic USB3 and generic NVMe drivers for Windows 7 which support all hardware from all vendors.ġ. Since FlashBoot version 3.2x we have fixed limited display resolution problem (it's no longer restricted to 1024x768 and now reflects actual LCD panel resolution as reported in EDID block), added support for GPU hardware which maps framebuffer to physical memory above 4 Gb boundary, and fixed dual boot problems (Windows Update in Windows 10 no longer overwrites FlashBoot's patch for the UEFI loader of Windows 7).
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