So what is wrong with ACPI if "acpi_listen" is not reporting any events but
"ac_adapter" event while the state of the various buttons and all other
devices is reported in /proc/acpi/* ?
Do I have an unssuported DSDT?
and once more "What can I do?"
Ruslán
From: "Brown, Len" <len.brown@xxxxxxxxx>
To: Ruslán Ledesma Garza <ruslanledesmag@xxxxxxxxxxx>
Subject: RE: ACPI info please
Date: Sun, 9 Jul 2006 23:31:32 -0400
I barely have the bandwidth to answer direct email from Linus Torvalds and
Andrew Morton.
I'm sorry, I see 8 e-mails from you in the last 2 days -- which are
Saturday and Sunday on this part of the Earth.
you must communicate with me on the list b/c I'm not the only
one who can answer questions.
thanks,
-Len
>-----Original Message-----
>From: Ruslán Ledesma Garza [mailto:ruslanledesmag@xxxxxxxxxxx]
>Sent: Sunday, July 09, 2006 11:06 PM
>To: Brown, Len
>Subject: ACPI info please
>
>Hi:
>
>I don't know if you've got my other emails, but I seem to get
>no response
>from anyone. I really would like to fix this ACPI problem,
>could you tell me
>where can I start or what can I do? There is no problem for me
>to start
>working with any source code, I just ask for some enlightment
>since I'm just
>getting started in the linux world.
>
>Ruslán
>
>
>> >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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