On Feb 6, 2014, at 8:56 AM, Chris Murphy <[email protected]> wrote:
> > GRUB 2.00-25 (Fedora 20) booting a 2011 MacbookPro in EFI mode. > > About 1 in 4 times, I get a boot hang with a particular kernel entry. I > choose the entry in grub, press return, the grub menu goes away and is > replaced with a black screen with a white _ and that's it. Nothing. > > If I add 'set debug=all' right before the linuxefi line, I get at least 10 > minutes of text scroll of very verbose information for every boot attempt; > even the good kernel entries it's way too verbose and so I give up. What less > verbose options are available that will help isolate the problem? > > I just now thought to try 'set debug=all' after the initrdefi line? So I did that, and this is what I get: https://dl.dropboxusercontent.com/u/3253801/SSgrubhang.png I get this with the same kernel, in a VBox VM and on a Mac baremetal. Both EFI booting. Both use Btrfs for /boot and rootfs. And both btrfs volumes are mounted with LZO compression. But a 3.13.0 kernel consistently boots OK. So maybe this is just a bad 3.14 build? It's a Fedora kernel: 3.14.0-0.rc1.git0.1.fc21.x86_64. Chris Murphy _______________________________________________ Help-grub mailing list [email protected] https://lists.gnu.org/mailman/listinfo/help-grub
