On 161215-19:31+0000, KatolaZ wrote:
> On Thu, Dec 15, 2016 at 08:14:25PM +0100, Miroslav Rovis wrote:
>
> [cut]
>
> >
> > It's related with ATI cards, but with the newer kernel than yours, so...
> >
> > (And there are some issues with some Nvidia cards on Gentoo users ML too.)
> >
> > Certainly, blank screen can indicate problems with graphics card...
> >
>
> If this is the case, using a lowres vga mode should solve the
> problem. It must be possible to pass "vga=ask" to the kernel line, and
> get a list of vga mode available. Just select a standard 80x25
>
> However, it seems that the boot stops when the kernel tries to
> decompress the initrd, so technically speaking the screen is not blank
> (the user reported that he could see something before the boot
> stopped), so I would probably prefer to think that it's an issue with
> initrd...
>
> My2Cents
>
> KatolaZ

May perfectly be as you write, kind veteran Unix Admin.

However, I now remember I did have (well, on Gentoo, but it's the Unix
version of Gentoo, not the systemd version, and I remember often issues were similar
in Debian-based systems as in Gentoo)...

[I now remember I did have] blank screens with kernels 4.8 I think, not
the 4.9
(
sys-kernel/gentoo-sources-4.9.0 hangs at boot with blank screen
https://bugs.gentoo.org/show_bug.cgi?id=602614
),
so likely it wasn't that issue in that bug, the

https://marc.info/?l=gentoo-user&m=148167681011303&w=2
> ... CONFIG_VMAP_STACK...
which appears only from the new kernel 4.9 .

But the boot didn't appear irregular, just the screen went blank, and I
lost all, keyboard, mouse, all, and there was no hard disk flashing at
all.

What did the
> (the user reported that he could see something before the boot
> stopped)
?

There are 7 or more emails of Emiliano, wasn't able to find it with a
quick search.

[I now remember I did have] blank screens with kernels 4.8 I think, and
the way I dealt with it, was, after resetting the machine, with the
hardware button, I unplugged it from the mains, and I let it be still
for 5 minutes (or was it more?)...

And I was able to get it to boot afterwards.

Just worth trying, maybe... Some issues with memory and swap could be
overcome that way.

--
Miroslav Rovis
Zagreb, Croatia
http://www.CroatiaFidelis.hr