[syslinux] efi config hang

[Joakim Tjernlund]

On Wed, 2018-12-12 at 17:05 -0600, Carl Karsten wrote:
> On Wed, Dec 12, 2018 at 4:54 PM Joakim Tjernlund
> <Joakim.Tjernlund at infinera.com> wrote:
> > On Wed, 2018-12-12 at 16:00 -0600, Carl Karsten via Syslinux wrote:
> > > CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe.
> > > 
> > > 
> > > On Tue, Dec 11, 2018 at 9:19 PM Ady Ady via Syslinux <syslinux at zytor.com> wrote:
> > > > > > You should be able to see the effects of the DISPLAY directive when
> > > > > > testing the floppy image I sent you, because it starts with the boot
> > > > > > prompt, not with a menu.
> > > > > 
> > > > > I see the effects, both good and bad.  I'm having trouble knowing how
> > > > > bad the bad is.
> > > > 
> > > > How about comparing it with the current behaviour in BIOS mode?
> > > 
> > > Everything in current BIOS mode works perfectly as far as I can tell.
> > > We know things are different with efi, but that alone isn't a blocker.
> > 
> > Have you tried to updating to a newer gnu-efi ? The one included in syslinux is very old.
> 
> I am using the binaries from
> https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsources.debian.org%2Fsrc%2Fsyslinux%2F3%3A6.04%257Egit20171011.af7e95c3%2Bdfsg1-6%2Fdebian%2Fchangelog%2F&data=02%7C01%7CJoakim.Tjernlund%40infinera.com%7C1d50b660417a4c6e2c3f08d66086688e%7C285643de5f5b4b03a1530ae2dc8aaf77%7C1%7C0%7C636802527742019220&sdata=UYyZaxiiKgLpp%2BrdXmZ3UMVRkvTCagf2SZk%2FVtZnGdM%3D&reserved=0
> 

I cannot tell but I guess you are using newer gnu-efi. You should check how your repo does this: 
https://github.com/joakim-tjernlund/syslinux/commit/22d32c15ea96c01c8c05b8c1551095716d42f3a4