Re: Freeze at "Loading....." in UEFI environment

[Andrei Borzenkov]

В Sat, 27 Sep 2014 08:57:59 -0500
Dan McGhee <address@hidden> пишет:

> I build "Linux from Scratch," and am trying to use grubx64.efi to boot 
> LFS-7.4, LFS_7.5, Ubuntu-14.04 and Win-8.1.  At this point, I get the 
> Grub Menu, but when I select any of the OS's, the screen shifts to 
> "Loading <name>....." and stops.  The only action I can take then is 
> CTRL-ALT-DEL.
> 
> To check things, I modified Ubuntu's three-line grub.cfg on the EFI 
> partition to point to my LFS-7.5 partition and grub.cfg.  I then can 
> boot any of my OS's.  So it seems that the problem is with either the 
> grubx64.efi that I built or some interface with the efi variables that I 
> don't know about, much less know how to manipulate.  I'm thinking that I 
> made some uninformed mistake with Grub.
> 
> Machine info:  HP Envy m6 Sleekbook
> Partitions:  Windows-(hd0,gpt1), EFI-(hd0,gpt2), LFS-7.5-(hd0,gpt6), 
> LFS-7.4-(hd0,gpt7), Ubuntu (hd0,gpt8)
> I configured Grub with these options:

And your grub version is ... ?

> "$pkg_source"/configure --prefix=/usr  \
>              --sbindir=/sbin        \
>              --sysconfdir=/etc      \
>              --disable-grub-emu-usb \
>              --disable-efiemu       \
>              --enable-grub-mkfont   \
>              --enable-device-mapper \
>              --with-platform=efi    \
>              --target=x86_64        \
>              --program-prefix=""    \
>              --with-bootdir="/boot" \
>              --with-grubdir="grub" \
>              --disable-werror
> 
> I ran grub-install this way:
>           grub-install --target=x86_64-efi --efi-directory=/boot/efi 
> --bootloader-id=LFS-Grub --recheck --debug and got everything I expected 
> including an entry in the OS boot manager.
> 
> I used grub-mkconfig to generate /boot/grub/grub.cfg
> 
> I used this document from the Archlinux wiki quite extensively in my 
> grub work:
> 
> https://wiki.archlinux.org/index.php/GRUB2
> 
> There is one thing in that document that I have not done.  In the 
> troubleshooting section it says:
> >
> >
> >       Boot freezes
> >
> > If booting gets stuck without any error message after GRUB loading the 
> > kernel and the initial ramdisk, try removing the |add_efi_memmap| 
> > kernel parameter.
> >
> 
> Although I don't know anything about memmaps, except what they are, it 
> just didn't seem reasonable that this would stop a boot.  Anyway, I 
> checked my kernel config file and found this:
> 
> > CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
> > CONFIG_SPARSEMEM_VMEMMAP=y
> > CONFIG_FIRMWARE_MEMMAP=y
> 
> Unless FIRMWARE_MEMMAP is the same as efi_memmap, I don't have the 
> option in my kernel.
> 
> I'm fresh out of ideas, knowledge and options.  I don't want to "grasp 
> at straws" or "easter egg" this.  I will be grateful for any directions, 
> hints, procedures or help that you folks can provide.
> 
> Thanks,
> Dan