bugGNU GRUB - Bugs: bug #47374, GRUB hangs for 2-3 minutes...

 
 

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bug #47374: GRUB hangs for 2-3 minutes regularly w/ Libreboot 20150518 on Lenovo T400 w/ DVD drive

Submitted by:  Bradley M. Kuhn <bkuhn>
Submitted on:  Wed 09 Mar 2016 08:24:21 PM UTC  
 
Category: BootingSeverity: Major
Priority: 6Item Group: Hardware-specific
Status: NonePrivacy: Public
Assigned to: NoneOriginator Name: Bradley M. Kuhn
Open/Closed: OpenRelease: 
Release: otherReproducibility: Every Time
Planned Release: 2.02

Wed 09 Mar 2016 08:24:21 PM UTC, original submission:

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. :)

Bradley M. Kuhn <bkuhn>

 

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Carbon-Copy List
  • -unavailable- added by phcoder (Updated the item)
  • -unavailable- added by bkuhn (Submitted the item)
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    Follow 2 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Tue 11 Oct 2016 12:35:49 PM UTCphcoderPriority5 - Normal=>6
    Tue 15 Mar 2016 05:48:56 PM UTCphcoderPlanned ReleaseNone=>2.02

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