Date: Tue, 12 Nov 2002 22:15:51 -0500 From: "Gennadiy Tsygan" <[EMAIL PROTECTED]> Subject: Re: [LIB] Win2k power management pitfall
Very interesting... I think I had something like that before I started to use hibernation. L110 uses about 20mA on standby, while hibernation mode needs no power. ----- Original Message ----- From: "Raymond" <[EMAIL PROTECTED]> To: "Libretto" <[EMAIL PROTECTED]> Sent: Saturday, November 09, 2002 8:59 PM Subject: [LIB] Win2k power management pitfall > Date: Sat, 09 Nov 2002 17:00:37 +0800 > From: Raymond <[EMAIL PROTECTED]> > Subject: Win2k power management pitfall > > Hi all! > > > Well I've finally decided to put 2k onto my L100 (along with the existing > dual boot install of Win98SE and RHL6.2) ... significantly less painful > than I anticipated, especially nice was the fact that *everything* had > inbuilt driver support in 2k including my FDD, NIC and CD-ROM. It's also > not slower than 98, at least not noticeably and networking actually works > properly now. I also like how you can actually tell it to suspend or > hibernate and that it would in fact do what you tell it to do. However, one > thing about power management caught me out. > > I run my libby with a power-on BIOS password (so when it comes out of > hibernation, suspend or a cold boot, it sits asking me for a password > before going any further). When at this screen, the laptop won't suspend > itself after a certain amount of time and I'm *pretty* sure that at least > some of the thermal shutdown triggers are disabled so it would take the > processor's internal thermo to trip before the thing shuts down (you can > see where this is going can't you?). > > Now by default, Win2k sets the power profile such that the laptop suspends > after 5 minutes and hibernates after 10. At first I didn't know this. So it > was happily sitting there then 5 minutes passed and it suspended. I thought > "Jolly good, I was going to do something else anyway" so I closed the lid > and put it in it's box (the "cardboard deluxe" laptop case mentioned ages > ago in case anyone was wondering), put the whole lot in my bag (between a > few books ... VERY well insulated) and went to do something else. Came back > several hours later and opened the box and wondered why the laptop was so > hot (by this time the battery had fully drained). > > Turns out, after 10 minutes (ie. 5 minutes after initial suspend), the > laptop in fact wakes itself up (presumably so that in most cases, Windows > can activate hibernation and shut it all down nicely). Problem is, when it > woke up, it hit the bios password screen and had been sitting there ever > since about 5 minutes after I packed it away, processor running and hard > drive spinning, right up until it had fully discharged the (fully charged) > battery (and converted all the resulting energy to heat over a period of > several hours). Not a good situation at all. Especially given I was banging > that bag around quite a bit during this time (I presume the hard drive was > smart enough to at least park itself though). > > I've since told it never to hibernate (so it won't actually try to wake up > from suspend) ... I could have instead told it to never suspend and always > hibernate but given the L100 uses so little power when in suspend (unlike > the L50/70), I figured it wasn't worth the time difference. > > > Hope this helps someone avoid the same problem! > > > - Raymond > > --- > > > /~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\ > | | "Does fuzzy logic tickle?" | > | ___ | "My HDD has no reverse. How do I backup?" | > | /__/ +-------------------------------------------| > | / \ a y b o t | [EMAIL PROTECTED] | > | | Need help? Visit #Windows98 on DALNet! | > | ICQ: 31756092 | Libretto IRC channel #Libretto on DALNet! | > \~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~/ > > > > > ************************************************************** > http://libretto.basiclink.com - Libretto mailing list > http://www.silverace.com/libretto/ - Archives > > -------TO UNSUBSCRIBE------- > Reply to any of the list messages. The reply mail should be > addressed to: [EMAIL PROTECTED] - Then replace any text > on the message's subject line: cmd:unsubscribe > --------TO UNSUBSCRIBE DIGEST------ > Do above but with this on subject line: cmd:unsubscribe digest > ************************************************************** > > > ************************************************************** http://libretto.basiclink.com - Libretto mailing list http://www.silverace.com/libretto/ - Archives -------TO UNSUBSCRIBE------- Reply to any of the list messages. The reply mail should be addressed to: [EMAIL PROTECTED] - Then replace any text on the message's subject line: cmd:unsubscribe --------TO UNSUBSCRIBE DIGEST------ Do above but with this on subject line: cmd:unsubscribe digest **************************************************************
