URL:
<http://savannah.gnu.org/bugs/?47374>
Summary: GRUB hangs for 2-3 minutes regularly w/ Libreboot
20150518 on Lenovo T400 w/ DVD drive
Project: GNU GRUB
Submitted by: bkuhn
Submitted on: Wed 09 Mar 2016 03:24:21 PM EST
Category: Booting
Severity: Major
Priority: 5 - Normal
Item Group: Hardware-specific
Status: None
Privacy: Public
Assigned to: None
Originator Name: Bradley M. Kuhn
Originator Email: [email protected]
Open/Closed: Open
Discussion Lock: Any
Release:
Release: other
Reproducibility: Every Time
Planned Release: None
_______________________________________________________
Details:
I have a stock Debian Jessie install with grub-pc 2.02~beta2-22+deb8u1
on a T400 with Libreboot 20150518 installed.
Boots fine if I just let it auto-boot and don't go to grub command line
(i.e., if it never tries to read/touch (achi1), which is the DVD drive).
If I hit 'c' and get the grub> prompt:
grub> ls
... works FINE, returning immediately if the DVD drive is *not* in the
ultrabay slot on the T400, but if I boot with the DVD drive in:
grub> ls
# .... sits for 2-3 minutes
Then returns file listings as expected.
It's clearly related to (achi1), which is the DVD drive, because this:
grub> ls (ahci0,msdos2)/ # as an example
does not hang and returns expected rules.
But, do a:
grub> ls (ahci1)
and it hangs again for 2-3 minutes.
and returns:
error: AHCI transfer timed out.
During the hang, the HD light is illuminated but it never tries to
access the DVD drive.
Behavior is *better* if you put a DVD or CD into the drive. The hang is
shorter, only about 30-60 seconds, and then things proceed normally.
You can even ls the files on the DVD or CD from the grub> prompt with:
grub> ls (ahci1)/
The "error: AHCI transfer timed out " never seems to appear when there's
a DVD in the drive.
Now, I read in this thread:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=558661
that it's probably a BIOS bug that causes this. I'm all for blaming
proprietary BIOS for being broken. But, in this case, I'm using
libreboot 20150208 so it's either a bug in libreboot, or a bug in GRUB.
The libreboot folks suspect it's a GRUB issue. :)
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