On Wed, Oct 24, 2018 at 05:47:17PM +0300, Meelis Roos wrote: > > Can you try the patch below? This is extracted from the code here: > > https://github.com/joyent/illumos-joyent/blob/b6a0b04d591f5b877cfe05f45e81f0e8a5cfc2b3/usr/src/uts/intel/io/pci/pci_boot.c#L1805 > > Thank you. Unfortunately it does not change anything noticable. Do you see the "disabling NMI on error" message? Can you boot with "pci=earlydump vga=0xf07" and capture the output? Drop the "vga=0xf07" if it doesn't work or makes the screen unreadable. > > I'm not sure why this would be only an intermittent problem, but at > > least we can see if this is related. > > It seems 4.19 and current git are 100% reproducers so far - I have > not managed to successfully boot either of them yet. I have seen > 4.19-rc1 era git kernel booting at least once. > > I noticed that Debian packaged 4.17 with initramfs worked fine so > far for my test, from these I have in grub menu. My selfcompiled > kernels do not use initramfs. It seems like the hang happens long before we would do anything with an initramfs, but maybe there's a timing or memory map issue. It seems like a hassle to pursue this angle, but if we can't figure it out otherwise, maybe we'll have to. Bjorn
