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[Bug 241959] New: No keyboard if initrd execs /bin/bash
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Fri, 2 Feb 2007 18:06:53 -0700 (MST)
  • Message-id: <bug-241959-21960@xxxxxxxxxxxxxxxxxxxxxxxxx/>

Summary: No keyboard if initrd execs /bin/bash
Product: openSUSE 10.2
Version: Final
Platform: i586
OS/Version: SuSE Other
Status: NEW
Severity: Normal
Priority: P5 - None
Component: Basesystem
AssignedTo: bnc-team-screening@xxxxxxxxxxxxxxxxxxxxxx
ReportedBy: jimc@xxxxxxxxxxxxx
QAContact: qa@xxxxxxx

This is for OpenSuSE 10.2, mkinitrd-1.2-106.25. Hardware is a Dell Optiplex
GX-745 with a USB keyboard; same effect is seen in SuSE 10.1 with a Dell
Dimension E520 with USB keyboard (and presumably any machine and OS version
when a USB keyboard is involved).
Suppose something goes seriously wrong in your initrd, for example the root
filesystem fails fsck and needs manual attention. /initrd/init execs
/bin/bash. Now what? No USB modules are loaded, so the keyboard is
Workaround #1: run all over the building, find the install disc, and use
the rescue system to unscramble your disc or initrd. Assuming the involved
compute cluster machine has a CD drive.
Workaround #2: to /etc/sysconfig/kernel INITRD_MODULES add the USB modules:
usbhid uhci_hcd ehci_hcd. usbcore will be dragged in as a dependency.
ohci_hcd may be needed on some non-Dell systems. On the listed systems this
workaround would not work until I added ehci_hcd, though I expected that the
keyboard would not use USB-2.0.
The request is that mkinitrd should detect if a USB keyboard is in use and
should add the needed USB modules if so. This is a bug, not a feature request,
because the sysadmin can't recover from initrd errors as he could with a PS/2
Gotcha: if workaround #2 is used, mkinitrd fails to include the module for
the root disc (ata_piix and friends on these systems). Workaround #2A: add
ata_piix and ahci by hand, but that should not be necessary. The person making
the modifications should be sure that when he adds the needed USB modules this
does not prevent detection of the root disc modules.

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