Bug 10547

Summary:	Reboot fails on newer Dell OptiPlex 745
Product:	Platform Specific/Hardware	Reporter:	Ben (bdeb)
Component:	i386	Assignee:	platform_i386
Status:	CLOSED CODE_FIX
Severity:	normal	CC:	bunk
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.24.5	Subsystem:
Regression:	---	Bisected commit-id:
Attachments:	Remove match on DMI_BOARD_NAME

Description Ben 2008-04-24 07:31:43 UTC

Hardware Environment: Dell OptiPlex 745

Steps to reproduce: Newer Dell OptiPlex 745s hang before rebooting after 'sudo reboot'.

A patch for some versions of the OptiPlex was proposed here -- http://lkml.org/lkml/2007/6/5/59 -- and is included in 2.6.23 and later kernels, according to http://lxr.linux.no/linux+v2.6.23/arch/i386/kernel/reboot.c . However, the DMI_BOARD_NAME ("0WF810") is too restrictive. Newer OptiPlex machines have a DMI_BOARD_NAME of "0RF703".  I therefore suggest adding another clause to reboot.c, similar to the one in the original patch, but matching a DMI_BOARD_NAME of "0RF703".

Comment 1 Ben 2008-05-03 02:45:05 UTC

Created attachment 16011 [details]
Remove match on DMI_BOARD_NAME

On further inspection, it seems that there are other DMI_BOARD_NAMEs for this same machine. They seem to change from time to time, which means that the current code is fragile. Moreover, using bios reboot should not break non-SFF OptiPlex 745s, and so a reasonable fix is to simply drop the match on DMI_BOARD_NAME.

Comment 2 Adrian Bunk 2008-05-05 07:40:27 UTC

fixed by commit 163ea310b68bdde89b1ac633fbf8c0db290d3f86