Can anyone give me a hint on how to fix this? Anything would be useful.
>Hi. I'm a newbie to linux, but I've been getting this problem ever
>since I installed it on my computer (I've already tested Fedora Core 5
>and Ubuntu 6, both having the same problem).
>
>1) I first discovered that my laptop display didn't turn off when the
>lid was closed (I can tell because I can see the glare of the display
>through a gap). So I started investigating and found that the lid
>event is not triggered whenever I close/open the lid (using
>acpi_listen). But the weirdest part is that the event is reported when
>doing "cat /proc/acpi/button/lid/LID/state".
is the video driver loaded (drivers/acpi/video.c)
When doing "lsmod", response is "video 16260 0", so I
think answer is yes.
>2) Then I realized no events are reported through acpi_listen, except
>for "ac_adapter" event which occurs after resuming the laptop from
>hibernation.
How about power button events?
No other events rather than ac_adapter are reported, including button
events.
>3) I've also found that sometimes the computer freezes when resuming
>from hibernation (I can only confirm this under Ubuntu, I can't
>remember what happens with Fedora).
>
>4) Finally, for some reason gnome power manager doesn't put into
>hibernation my computer when battery is too low (the only time I
>tested this was under Ubuntu) and simply runs out of battery.
>
>Since #'s 1 & 2 have ocurred under Fedora and Ubuntu, I assume there
>is some low level problem/incompatibility of ACPI with my computer's
>hardware. Everything works fine under WinXP, and to me power
>management is a must for my laptop.
>
>I've read some stuff about DST's, but sincerelly I didn't undestand
>much (ie. where does this DST reside? Is it a firmware?),
modified DSDT's are a debugging tool only -- not a path to a "real fix".
Linux should work properly on your laptop without any modifications
to the firmware. (though it might be a good idea to check with Dell
to make sure you're running the latest).
Last time I checked (about 3 weeks ago) the bios firmware was the latest
("A07"). By the way, are DSDT's firmwares then?
>but I wonder
>if the fact that my DST says "MSFT" could be the cause of ACPI not
>working propertly.
:-) This means it was built with the MSFT ASL compiler. Sometimes
that is an issue, but we try to handle those issues and re-building
the firmwarwe with Intel's compiler is okay for debugging, but not
supportable.
build with CONFIG_ACPI_DEBUG=y and see if any new dmesg come out.
You can also boot with "acpi=strict" if you want to see if
Linux is already working around issues in your DSDT.
I've already tried to build my DSDT using Intel's compiler. It showed
several errors (can't remember which ones, but I can do it again if this can
help). I think I fixed them, but could never get to install the modified
DSDT.
What can I do?
-Len
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