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 <[email protected]> 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 > > -- > coreboot mailing list: [email protected] > https://www.coreboot.org/mailman/listinfo/coreboot >
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