Hello Joshua,

I'll ask similar question, considering UEFI (BIOS). I have no idea if you can issue somehow easy FLR (PCI Function Level Reset), but if you can, does this use case repeat itself?

I found, related to BIOS, this pointer (http://www.tomshardware.co.uk/forum/278002-30-solved-what-capability-option-bios), since I do NOT recall this option in any (legacy and UEFI) of the BIOSes I used (and I used lot (>100) of them). Probably, did not pay too much attention, since I do not recall this option to be tested/used?!

Zoran

On Wed, Mar 29, 2017 at 10:49 PM, Joshua Pincus <joshua.pincus@gmail.com> wrote:

Hi,

After performing just an FLR (PCI function level reset) of a Gen8 Intel HD graphics device, there's no VGA output from the device, no matter what I try to do. I've had coreboot reset the graphics control register, VGA control, VGA display disable bit, etc.

Has anyone seen anything like this? The only way I can get VGA restored is by performing a system-level reset. But I just want to do an FLR. Any ideas?

Thanks,
JP

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