ThinkPad T400 : should kernel option "reboot=pci" be hard coded ?
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From: Pedro Ribeiro on 14 Jul 2010 01:10 2010/6/9 Toralf F�rster <toralf.foerster(a)gmx.de>: > Hi, > > Matthew Garrett wrote at 16:11:03 >> On Mon, Jun 07, 2010 at 11:22:21AM +0200, Toralf F�rster wrote: >> > Since some kernel version (IIRC since 2.6.31) it is necessary to boot the >> > linux kernel with that option to prevent an extra 9 seconds delay during >> > reboot. >> > I found this tip on the LKML -and now I'm wondering whether this option >> > should be hard coded in the kernel sources b/c it seems to be necessary >> > for current kernels too. >> >> No, the best thing to do would be to figure out what changed to require >> the extra 9 seconds. Are you able to work out which the last kernel >> release without this timeout was? > The delay exists since 2.6.27, versions before them I can't test due to > udev-149 which don't work together with version < 2.6.27. > > Since version 2.6.29 that kernel boot parameter avoids the extra delay, 2.6.28 > needs the 9 sec pause independend from what I specify during boot. > > -- > MfG/Kind regards > Toralf F�rster > > pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo(a)vger.kernel.org > More majordomo info at �http://vger.kernel.org/majordomo-info.html > Please read the FAQ at �http://www.tux.org/lkml/ > I also have a T400, and reboot=pci solves the problem for me. Just tested with kernel 2.6.20 and the 9 second boot delay is still there. Maybe this should be hardcoded... Regards, Pedro -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |