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Date:      Mon, 21 Apr 2003 08:45:46 -0700
From:      Lars Eggert <larse@ISI.EDU>
To:        "Cliff L. Biffle" <cbiffle@safety.net>
Cc:        Robert Watson <rwatson@freebsd.org>
Subject:   Re: Laptop update...
Message-ID:  <3EA4122A.8090603@isi.edu>
In-Reply-To: <200304201807.29531.cbiffle@safety.net>
References:  <Pine.NEB.3.96L.1030420190618.16891w-100000@fledge.watson.org> <200304201807.29531.cbiffle@safety.net>

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On 4/20/2003 6:07 PM, Cliff L. Biffle wrote:

> On Sunday 20 April 2003 04:09 pm, Robert Watson wrote:
> 
>>When you wake the box up again, try switching to another virtual console
>>and back again, and/or changing the display resolution using
>>ctrl-alt-[keypad + or -].  I've noticed similar things with my Dell
>>notebook, and seem to recall a discussion of this issue previously.
>>Basically, when things wake up, some piece of something forgets to power
>>the backlight back on again.
> 
> I've had similar issues on my Toshiba laptop.  There are patches to XFree 
> floating around that resolve this, at least on my machine; basically, XFree 
> does not do a full reinit of the display on resume, by default.  So, in my 
> case, I have no mouse cursor; in your case, you have no backlight, and so 
> forth.  I've been digging for the patches and can't find 'em, but you may 
> have more luck than I.

FWIW, in the case of my Dell at least, it's also an issue with syscons,
not just X. And it's not just the backlighting, the whole screen stays
black.

Lars
-- 
Lars Eggert <larse@isi.edu>           USC Information Sciences Institute

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