ACPI question

ACPI question

[Mahmood NT]

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 Hello,
I have a DELL inspiron 510m running Fedora core 3 (2.6.9).
I have trouble with my ACPI. When ever I close the lid, the screen goes off
(I do not know whether it suspen to RAM or not).
But when I open the lid, it does not wake up and the screen still is off. I
must press the power button. therefore system shuts down
and I must restart it again.

First I thought that the problem is with ACPI daemon. so I disable it and
try to close the lid again. the same problem rose again.
I think that the kernel (or something like this) does not recognize the lid
button (or lid event).

The surprising thing is that, when I see the bootlog, it writes this:
ACPI wake up devices:
lid S1 S2 ......
it seems that it knows "lid" but do not know what it is !!!

What do you suggest?

--
Mahmood NT,

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Broken Dell BIOSes (was: Re: ACPI question)

[Matthew Garrett]

On Fri, Nov 18, 2005 at 04:25:42PM +0330, Mahmood NT wrote:

> I have a DELL inspiron 510m running Fedora core 3 (2.6.9).
> I have trouble with my ACPI. When ever I close the lid, the screen goes off (I
> do not know whether it suspen to RAM or not).
> But when I open the lid, it does not wake up and the screen still is off. I
> must press the power button. therefore system shuts down
> and I must restart it again.

There's a bug in Dell's current laptop BIOSes. If you shut the lid and 
open them again, they won't switch the screen back on. I've been 
spending the past month fighting with Dell technical support over this, 
so if anyone has any contacts inside Dell, that would be great. The same 
thing happens if you boot Windows in safe mode, so it's certainly not a 
Linux bug.

-- 
Matthew Garrett | mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org


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Re: Broken Dell BIOSes (was: Re: ACPI question)

[Erik Slagter]

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On Fri, 2005-11-18 at 16:27 +0000, Matthew Garrett wrote:
> > I have a DELL inspiron 510m running Fedora core 3 (2.6.9).
> > I have trouble with my ACPI. When ever I close the lid, the screen goes off (I
> > do not know whether it suspen to RAM or not).
> > But when I open the lid, it does not wake up and the screen still is off. I
> > must press the power button. therefore system shuts down
> > and I must restart it again.
> 
> There's a bug in Dell's current laptop BIOSes. If you shut the lid and 
> open them again, they won't switch the screen back on. I've been 
> spending the past month fighting with Dell technical support over this, 
> so if anyone has any contacts inside Dell, that would be great. The same 
> thing happens if you boot Windows in safe mode, so it's certainly not a 
> Linux bug.

AFAIK many laptops (not only Dell) show this behaviour, at least while
actually suspending, they either do not turn off the backlight, or do
not turn them back on after resume. I guess "windows drivers" all fix
this. Or maybe lack of linux acpi support? Anyway if you have a
"suspend" supported video card with X driver, it will work nonetheless
(like ati) because the driver will do the right thing or otherwise there
are some tools around to explicitly turn on/off the backlight.

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Re: Broken Dell BIOSes (was: Re: ACPI question)

[Matthew Garrett]

On Sat, Nov 19, 2005 at 11:40:11AM +0100, Erik Slagter wrote:

> AFAIK many laptops (not only Dell) show this behaviour, at least while
> actually suspending, they either do not turn off the backlight, or do
> not turn them back on after resume. I guess "windows drivers" all fix
> this. Or maybe lack of linux acpi support? Anyway if you have a
> "suspend" supported video card with X driver, it will work nonetheless
> (like ati) because the driver will do the right thing or otherwise there
> are some tools around to explicitly turn on/off the backlight.

That's an entirely separate issue - Dells do this when you close the 
lid, even if you're not suspending them.

-- 
Matthew Garrett | mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org


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