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Subject Author Date
Dell E1505 freezes Albert Wiersch 04-14-2006
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Posted by Albert Wiersch on April 14, 2006, 12:37 pm
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If I leave my Dell Inspiron E1505 (core duo processor) on, plugged into AC
power, with a USB mouse attached (and network cable, external monitor), and
come back later, sometimes it will not come back up! This is really
bothering me. The only power saving setting I have when on AC power is to
turn off the monitor. When it does this, I have to hold down the power
button and reboot.

Why would my notebook be freezing when I leave it for awhile and come back?
I haven't had any other problems with freezing while I'm actually using it.

Dell told me to uncheck "Allow the computer to turn off this USB device to
save power" in the "USB Root Hub" items in the device manager because I
thought this this problem only occurs when I have a USB mouse plugged in. As
far as I can tell it does only occur when I have my USB mouse plugged in.
Any ideas?

Thank you!

--
Albert Wiersch
http://www.htmlvalidator.com/




Posted by Quaoar on April 14, 2006, 1:19 pm
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 Albert Wiersch wrote:
> If I leave my Dell Inspiron E1505 (core duo processor) on, plugged into AC
> power, with a USB mouse attached (and network cable, external monitor), and
> come back later, sometimes it will not come back up! This is really
> bothering me. The only power saving setting I have when on AC power is to
> turn off the monitor. When it does this, I have to hold down the power
> button and reboot.
>
> Why would my notebook be freezing when I leave it for awhile and come back?
> I haven't had any other problems with freezing while I'm actually using it.
>
> Dell told me to uncheck "Allow the computer to turn off this USB device to
> save power" in the "USB Root Hub" items in the device manager because I
> thought this this problem only occurs when I have a USB mouse plugged in. As
> far as I can tell it does only occur when I have my USB mouse plugged in.
> Any ideas?
>
> Thank you!
>

This *might* be related to the known Core Duo USB power issue
"apparently" caused by a faulty Microsoft driver. From Tom's Hardware
via Slashdot:

"Tom's Hardware recently discovered a bug in Microsoft's ACPI driver
implementation under Windows XP SP2 that causes a loss of more than one
hour of battery time when connecting any USB 2.0 device to an Intel Core
Duo based system. Apparently Microsoft, Intel and ODMs have known of
this problem under a confidentiality agreement since July 12, 2005 via
(a still private) Knowledge Base article KB899179. The bug lies in the
asynchronous scheduler component inadvertently being left running
causing Windows' internal task scheduler (ITS) to treat it as a running
process involving the attached device. This in turn prevents the ITS
from powering down the processor into one of the ACPI sleep states
causing the system to use more battery power. At this time there seems
to be no fix. Strangely, single-core systems and AMD systems are not
affected. This leads one to wonder if it is truely a software problem or
if there a much larger hardware problem that may affect Core Duo
equipped Apple systems."

The solution at this point would seem to be to disable any power saving
states and screen standby might be one of the triggers.

Q

Posted by Albert Wiersch on April 14, 2006, 2:16 pm
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Yes, I have heard about that issue and thought it could be related. However,
I still wanted to post here to see if there are other people having the same
problem and if anyone has a solution that they know works.

I have read that it actually affects other processors as well, but to a
lesser degree due to the improvements in the Core Duo processor.

--
Albert Wiersch
Fix your website: http://onlinewebcheck.com


>
> This *might* be related to the known Core Duo USB power issue "apparently"
> caused by a faulty Microsoft driver. From Tom's Hardware via Slashdot:
>
> "Tom's Hardware recently discovered a bug in Microsoft's ACPI driver
> implementation under Windows XP SP2 that causes a loss of more than one
> hour of battery time when connecting any USB 2.0 device to an Intel Core
> Duo based system. Apparently Microsoft, Intel and ODMs have known of this
> problem under a confidentiality agreement since July 12, 2005 via (a still
> private) Knowledge Base article KB899179. The bug lies in the asynchronous
> scheduler component inadvertently being left running causing Windows'
> internal task scheduler (ITS) to treat it as a running process involving
> the attached device. This in turn prevents the ITS from powering down the
> processor into one of the ACPI sleep states causing the system to use more
> battery power. At this time there seems to be no fix. Strangely,
> single-core systems and AMD systems are not affected. This leads one to
> wonder if it is truely a software problem or if there a much larger
> hardware problem that may affect Core Duo equipped Apple systems."
>
> The solution at this point would seem to be to disable any power saving
> states and screen standby might be one of the triggers.
>
> Q



Posted by Albert Wiersch on April 15, 2006, 1:14 pm
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By the way, my E1505 has the ATI 1400 video card/chip in it. I wonder if
that could have anything to do with it? Anyone else have that card and have
similar problems? I've disable turning off the monitor for now to see if
that "fixes" the problem. If it does, then at least I've narrowed it down to
the video card.

--
Albert Wiersch
Fix your website: http://onlinewebcheck.com


>
> If I leave my Dell Inspiron E1505 (core duo processor) on, plugged into AC
> power, with a USB mouse attached (and network cable, external monitor),
> and come back later, sometimes it will not come back up! This is really
> bothering me. The only power saving setting I have when on AC power is to
> turn off the monitor. When it does this, I have to hold down the power
> button and reboot.
>
> Why would my notebook be freezing when I leave it for awhile and come
> back? I haven't had any other problems with freezing while I'm actually
> using it.
>
> Dell told me to uncheck "Allow the computer to turn off this USB device to
> save power" in the "USB Root Hub" items in the device manager because I
> thought this this problem only occurs when I have a USB mouse plugged in.
> As far as I can tell it does only occur when I have my USB mouse plugged
> in. Any ideas?
>
> Thank you!
>
> --
> Albert Wiersch
> http://www.htmlvalidator.com/
>
>
>



Posted by Stevo on April 15, 2006, 10:31 pm
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I don't think that the computer is freezing. When the monitor is
turned of automaticaly on a desktop, you wake it up with the mouse.
If your mouse is being shut off by the USB, why not use the touch pad
to wake the computer (surely you have a touch pad)? Maybe that won't
work either. If that is the case you could always use common sense
and turn off that particular power saving option and either use a
different one or not leave the computer on for extended periods of
time. Laptops were not designed to be left on and can over heat.

Stevo


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