lkml.org 
[lkml]   [2010]   [Jul]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH] Remove 9 second reboot delay on Lenovo T400/T500
    On Wed, Jul 14, 2010 at 03:33:08PM +0100, Pedro Ribeiro wrote:
    > Please consider this patch. Let me know if you would like me to change
    > anything or if you don't agree with it. It applies cleanly to 2.6.35-rc5.
    >
    > The Lenovo T400 and T500 have an annoying 9 second delay when
    > rebooting, unless reboot=pci is passed to the kernel command line.
    > This delay happens from at least kernel 2.6.20.
    >
    > Make this change permanent by hardcoding the Tx00 on the
    > arch/kernel/reboot.c pci quirks table.

    There's two possibilities here:

    1) Lenovo's firmware is broken and the 9-second delay is always going to
    be there. In that case we should try to use the ACPI reboot vector
    first.

    2) We're doing something wrong in our shutdown sequence which then
    triggers this problem as a result.

    Either way, I think this patch is wrong.

    --
    Matthew Garrett | mjg59@srcf.ucam.org


    \
     
     \ /
      Last update: 2010-07-14 16:39    [W:2.253 / U:0.004 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site