[bug #49657] Lenovo x200 grub ls hangs, only with DVD drive installed and empty

[James C]

URL:
  <http://savannah.gnu.org/bugs/?49657>

                 Summary: Lenovo x200 grub ls hangs, only with DVD drive
installed and empty
                 Project: GNU GRUB
            Submitted by: jamescc
            Submitted on: Mon 21 Nov 2016 08:55:35 AM GMT
                Category: Filesystem
                Severity: Major
                Priority: 5 - Normal
              Item Group: Hardware-specific
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 
                 Release: other
         Reproducibility: Every Time
         Planned Release: None

    _______________________________________________________

Details:

Grub release: 2.02~beta2-9ubuntu1.12+7.0trisquel5  (but the pre-build rom
image could be different)

Libreboot release: 20160907 (coreboot 377rc98)

May be related to bug #47374.

Test procedure:
- power off
- power on
- mash down key until menu timeout cancels
- c for command line
- ls

If the DVD drive is full, this spins it up twice, then returns a list of
devices, including partitions on the DVD.

If the DVD drive is empty, this hangs, apparently indefinitely.

Hold the power button, for a disgraceful shutdown, to recover the machine.

I wonder if the syntax for discovering the existence of a DVD drive should be
different from the syntax for discovering the set of partitions on the disk,
because they take very different amounts of time.

Regards,
James.





    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?49657>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/