Re: Boot problems with - cannot smoothly boot on battery

From: Rafael J. Wysocki
Date: Sun May 24 2009 - 16:36:29 EST

On Monday 18 May 2009, Chris Howie wrote:
> Folks:
> I've been running for some time and reported an issue to this
> mailing list a while ago about the boot process. I believe I have now
> nailed down the one factor that determines whether I see this issue.
> The problem arises only when booting or halting my laptop when there
> is no power plugged in, e.g. the system is running on battery.
> Sometime after init begins starting services I must hold down a key on
> the keyboard to convince it to continue booting, otherwise it just
> hangs. If the system is running on AC then it boots fine. This same
> problem repeats itself during the halt process if running on battery.
> This also happens when resuming a suspend-to-disk image, after loading
> the data from the hard drive, but before control is returned to
> userspace. The keyboard has no effect on this hang, presumably
> because the kernel is not listening to the keyboard at this point.
> When this happens the only solution is to hold the power button and
> boot normally instead.
> An issue like this is a serious usability problem for me. I am
> neither a kernel developer nor hacker, my coding skills applying
> mostly to userspace applications. If there is anything you need from
> me to help diagnose this problem please let me know.
> I am not subscribed so please CC me on replies.

Let's try to make your report a bit more visible (some CCs added).

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