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#1
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Can I make battery-dropout cause a "sleep"?
If that's the right name.
At present, if the battery runs down when I'm not looking, on restarting the machine (by pressing the power button) after connecting the supply, it does a restart similar to if I'd shut it down, other than that it gives the "Windows did not shut down properly", and some app.s say _they_ did not shut down properly. Is it possible to set something so that the system does a "sleep", "hibernate", or whatever, so that when I apply power and restart, it wakes itself up how it was? If it is, what settings do I have to change where? I'm not talking about shutdowns instigated by an action, such as closing the lid or pressing the power button. Is it even _possible_ to trap the "battery is too low" situation? W7 HP SP1 32-bit. -- J. P. Gilliver. UMRA: 1960/1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf A. Top-posters. Q. What's the most irritating thing on Usenet? |
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Can I make battery-dropout cause a "sleep"?
J. P. Gilliver (John) wrote on 2/23/2019 2:58 PM:
If that's the right name. At present, if the battery runs down when I'm not looking, on restarting the machine (by pressing the power button) after connecting the supply, it does a restart similar to if I'd shut it down, other than that it gives the "Windows did not shut down properly", and some app.s say _they_ did not shut down properly. Is it possible to set something so that the system does a "sleep", "hibernate", or whatever, so that when I apply power and restart, it wakes itself up how it was? If it is, what settings do I have to change where? I'm not talking about shutdowns instigated by an action, such as closing the lid or pressing the power button. Is it even _possible_ to trap the "battery is too low" situation? W7 HP SP1 32-bit. The home software that comes with APC UPS hardware does precisely that. When a time limit (user settable) is reached during a power outage, an hibernate is instituted. The only problem I've noticed with this occurs when you have a very large memory: For example, I have 64GB of memory and that takes quite awhile to save even though my C disk is an SSD. This causes software to time out and initiate a "panic" shutdown. Further, Windows and most OS demand to save hibernation on your boot disk - this is left over from the BIOS standard that's been around for years. So the hibernation file eats a lot of boot disk space. As SSD prices drop and sizes increase, this hit doesn't seem so bad. -- Jeff Barnett |
#3
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Can I make battery-dropout cause a "sleep"?
On Sat, 23 Feb 2019 21:58:47 +0000, J. P. Gilliver (John) wrote:
Subject: Can I make battery-dropout cause a "sleep"? If that's the right name. At present, if the battery runs down when I'm not looking, on restarting the machine (by pressing the power button) after connecting the supply, it does a restart similar to if I'd shut it down, other than that it gives the "Windows did not shut down properly", and some app.s say _they_ did not shut down properly. Is it possible to set something so that the system does a "sleep", "hibernate", or whatever, so that when I apply power and restart, it wakes itself up how it was? If it is, what settings do I have to change where? I'm not talking about shutdowns instigated by an action, such as closing the lid or pressing the power button. Is it even _possible_ to trap the "battery is too low" situation? W7 HP SP1 32-bit. Yes, you can. See https://www.howtogeek.com/howto/3963...-in-windows-7/ and https://www.thewindowsclub.com/chang...on-windows-8-7 I set mine to "hibernate", not "sleep". "Sleep" still uses power, even if less. After too many hours in "sleep" the battery will still run down and give the same problem. The laptop takes a little longer to restart from "hibernate" than from "sleep", but I think it is worth it to avoid the risk of the battery running down. -- Kind regards Ralph |
#4
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Can I make battery-dropout cause a "sleep"?
In message , Ralph Fox
writes: On Sat, 23 Feb 2019 21:58:47 +0000, J. P. Gilliver (John) wrote: Subject: Can I make battery-dropout cause a "sleep"? If that's the right name. At present, if the battery runs down when I'm not looking, on restarting the machine (by pressing the power button) after connecting the supply, it does a restart similar to if I'd shut it down, other than that it gives the "Windows did not shut down properly", and some app.s say _they_ did not shut down properly. Is it possible to set something so that the system does a "sleep", "hibernate", or whatever, so that when I apply power and restart, it wakes itself up how it was? If it is, what settings do I have to change where? I'm not talking about shutdowns instigated by an action, such as closing the lid or pressing the power button. Is it even _possible_ to trap the "battery is too low" situation? W7 HP SP1 32-bit. Yes, you can. See https://www.howtogeek.com/howto/3963...-battery-actio n-in-windows-7/ Thank you. I find I already have "Critical battery action" set to Hibernate (which I think is the default). I have changed "Critical battery level" "On battery" from 2% to 3% - I'll see if that makes any difference. I only have about 3G of RAM, so it shouldn't need long to hibernate. and https://www.thewindowsclub.com/chang...attery-action- windows-8-7 Thanks. That seems to lead to more or less the same area - except it says you can set a full battery action (or at least notification) too; I can't see that, but maybe that's only available in Windows 8, despite what it said. I set mine to "hibernate", not "sleep". "Sleep" still uses power, even if less. After too many hours in "sleep" the battery will still run down and give the same problem. Yes, I'd go for hibernate too; I want it to save so it doesn't rely on battery. The laptop takes a little longer to restart from "hibernate" than from "sleep", but I think it is worth it to avoid the risk of the battery running down. Indeed. If it _has_ hibernated, should pressing the power button (after reconnecting external power, of course) always make it do a restore-from-hibernated-state, or can it be set to always boot as if from cold? If it can, where is that setting (so I can make sure it's set to restore-from-hibernate)? I also have both low and critical set to make a sound (a klaxon and a train whistle respectively), and these settings are definitely there when I check them after I've done a restart (and the sounds play when I click the test button): however, the last two times, I'm sure I didn't hear them, and I was sitting here by - in fact using - the computer when the battery ran down. -- J. P. Gilliver. UMRA: 1960/1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf "Bugger," said Pooh, feeling very annoyed. |
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Can I make battery-dropout cause a "sleep"?
On 2/23/2019 4:31 PM, J. P. Gilliver (John) wrote:
In message , Ralph Fox writes: On Sat, 23 Feb 2019 21:58:47 +0000, J. P. Gilliver (John) wrote: Subject: Can I make battery-dropout cause a "sleep"? If that's the right name. At present, if the battery runs down when I'm not looking, on restarting the machine (by pressing the power button) after connecting the supply, it does a restart similar to if I'd shut it down, other than that it gives the "Windows did not shut down properly", and some app.s say _they_ did not shut down properly. Is it possible to set something so that the system does a "sleep", "hibernate", or whatever, so that when I apply power and restart, it wakes itself up how it was? If it is, what settings do I have to change where? I'm not talking about shutdowns instigated by an action, such as closing the lid or pressing the power button. Is it even _possible_ to trap the "battery is too low" situation? W7 HP SP1 32-bit. Yes, you can. See https://www.howtogeek.com/howto/3963...-battery-actio n-in-windows-7/ Thank you. I find I already have "Critical battery action" set to Hibernate (which I think is the default). I have changed "Critical battery level" "On battery" from 2% to 3% - I'll see if that makes any difference. I only have about 3G of RAM, so it shouldn't need long to hibernate. and https://www.thewindowsclub.com/chang...attery-action- windows-8-7 Thanks. That seems to lead to more or less the same area - except it says you can set a full battery action (or at least notification) too; I can't see that, but maybe that's only available in Windows 8, despite what it said. I set mine to "hibernate", not "sleep".Â* "Sleep" still uses power, even if less.Â* After too many hours in "sleep" the battery will still run down and give the same problem. Yes, I'd go for hibernate too; I want it to save so it doesn't rely on battery. The laptop takes a little longer to restart from "hibernate" than from "sleep", but I think it is worth it to avoid the risk of the battery running down. Indeed. If it _has_ hibernated, should pressing the power button (after reconnecting external power, of course) always make it do a restore-from-hibernated-state, or can it be set to always boot as if from cold? If it can, where is that setting (so I can make sure it's set to restore-from-hibernate)? I also have both low and critical set to make a sound (a klaxon and a train whistle respectively), and these settings are definitely there when I check them after I've done a restart (and the sounds play when I click the test button): however, the last two times, I'm sure I didn't hear them, and I was sitting here by - in fact using - the computer when the battery ran down. There are many possibilities. Rather than make a bunch of assumptions, it might be helpful to learn the model number, the battery technology and age and whether this is a new problem or an old problem. What's the expected life of the battery? What is the time to failure? Does the battery gauge dribble down approximately linearly to the end, or does the drop seem normal down to some number above zero, then drop instantly to a much lower level? I've done a lot of battery testing. Batteries have varying degrees of protection, but most have at least two. The coulomb counter knows how many electrons it put into the battery and how many have been removed. There's a voltage sensor that shuts down to protect the battery if action is not taken by the coulomb counter. The coulomb counter can get out of sync with the battery. Sometimes, there's a battery calibration routine that can help. The other big problem is that batteries often fail by increased internal resistance. The coulomb counter knows there are electrons left, but the voltage sensor says, "no way Jose." That may be triggered by a high current surge, like a disk seek. Most of the "bad" batteries I tested let me have all the electrons at low current, but would shut down on typical high-current laptop surges. If that's your problem, an emergency hibernation save of 3GB to the hard drive makes the problem worse, not better. I always set the warning level to 20% or more, made sure I saved all work when it hit that level and started looking for an outlet. 2% is not enough when you have a tiny high performance laptop with a small battery. I've had some short-term success with Lithium batteries by opening up the pack and manually balancing the cells. Hibernation was useful back when operating systems were small and you had 256KB of RAM. Today, not so much. Win10 bloat is making it all much worse. I have laptops that have only a few minutes of useful life after booting if I expect to shutdown without crashing... assuming an update doesn't happen...grrr!!! So, set your warning level much higher, turn off hibernation. powercfg -h off |
#6
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Can I make battery-dropout cause a "sleep"?
J. P. Gilliver (John) wrote:
If that's the right name. At present, if the battery runs down when I'm not looking, on restarting the machine (by pressing the power button) after connecting the supply, it does a restart similar to if I'd shut it down, other than that it gives the "Windows did not shut down properly", and some app.s say _they_ did not shut down properly. Is it possible to set something so that the system does a "sleep", "hibernate", or whatever, so that when I apply power and restart, it wakes itself up how it was? If it is, what settings do I have to change where? I'm not talking about shutdowns instigated by an action, such as closing the lid or pressing the power button. Is it even _possible_ to trap the "battery is too low" situation? W7 HP SP1 32-bit. A laptop has detection of "0% charge" and the laptop is expected to make a response to that condition. The computer could be doing a number of things at the time. 1) In run state, battery enters 0% 2) In Sleep State (S3) at the time (session in RAM) 3) In Hybrid Sleep State (S3) at the time (session in RAM, session in hiberfil.sys) 4) In Hibernate (S4) state ( session in hiberfil.sys) 5) System in S5 shutdown ( ) In case (1), you can select S4 or S5 as responses. S3 is inappropriate by itself, because S3 still uses power (about 1 watt per DIMM for autorefresh). Being at 0% battery and enabling S3 sleep (RAM running) would be dumb, as you're driving the battery into the danger zone on purpose. In case (2), the machine could wake long enough to transfer RAM contents to hiberfil.sys and enter S4. In case (3), machine can enter S5 without consequences, because the session is "dually stored" and the hiberfil has you covered. In case (4), there is no need to do anything, as in S4 the platform is already in a low power state (RAM is off). But, they could wake temporarily and enter S5. In case (5), it would be nice to do something, but the machine might not have any useful action available to it as it is in S5. (In fact, PME options in that state might be limited to the Power Button.) If the battery drops too low below 0%, the battery charger may refuse to recharge the battery because of safety reasons (plating under reverse bias on a multi-cell lithium pack). ******* So the answer is "Yes, the machine has some detections" 1) Lid close switch on laptop - typically set to trigger S3 Sleep or S3 Hybrid Sleep. When (2) happens, machine will transition to a lower power state like S4 or S5. 2) Low battery indicator - should cause a transition from the current state, say S0 or S3, to S4 or S5. A number of criteria are covered in a Power Schema. ACPI has Power Schema, convenient "containers" of state machine info as to what to do and when. Before heading off on a "mission" such as this one, you inspect the shutdown menu, to see if the shutdown menu is "full" or is "missing some stuff". For example, on a virtual machine, there's no sleep or hibernate, on purpose. But similar things happen on real machines, due to bugs, or due to user settings. So the first thing you have to do, is make sure your shutdown menu is full. An example of dumb things that can happen. It would be dumb to be using GPEDIT to mess up these settings. Life is hard enough, without puzzles. https://www.tenforums.com/tutorials/...dows-10-a.html The normal foulup can be found here, in the Power control panel. https://www.tenforums.com/tutorials/...dows-10-a.html https://www.tenforums.com/attachment...ton_does-2.png Notice there are both Sleep and Hibernate radio buttons there. In an administrator Command Prompt, you would want to do powercfg /h on to indicate you want a hiberfile. Note that the hiberfile has a "percentage size". On an early Win10, a 64GB machine "wanted" a 48GB hiberfil.sys file. Some compression is involved, and some heuristics. If a person goes to a great deal of trouble, they can run a single program that uses all 64GB of memory, yet fills the memory with "incompressible data". This will cause a hibernation failure, unless the person doing the test has set the hiberfil.sys to "100%". The hiberfil.sys can be reduced to at least 50% of system RAM. Maybe even lower when you install the OS, and the installer "makes do" with the too-little storage you offered. A Windows installer attempts to leave 3GB of space free on C: at the end of installation, and any "slack" above that amount, can be assigned to the giant hiberfil.sys. The hiberfil.sys file is "reserved space". A hard reservation. The hibernation operation, on the other hand, only writes out data for the "used" portion of RAM. If you're sitting idle in the desktop, maybe a little less than 1GB needs to be recorded. Even though you have 64GB of RAM. A machine with only 2GB of RAM, might write slightly less than the giant machine, but it still writes out on hibernation. So once my hibernation file is present, and I did dir /ah C: and verified a hiberfil.sys of sufficient size is present, then I go to the Power control panel for a look. And see if my "buttons" are enabled. After I've ticked my radio buttons, I want to verify all is well. I go look at the Shutdown menu. Is the menu full of sleep, hibernate, shutdown items ? If hibernate is enabled, then you can do hybrid sleep instead of sleep. This will "slow down" ordinary sleep requests. You will see extensive LED activity when entering sleep. When you close the lid (and lid closure is set to sleep), you would then have LED activity for (potentially, pathologically) minutes and minutes. On more mundane situations, the writeout takes ten seconds. Vanilla sleep, without hibernation combined with it, could reduce that time further, but the OS still putters around when sleeping, such as "parking" processes that have left the disk in a "dangerous" state. Maybe if you're defragging the disk, time is needed to finish the current defrag API calls properly. This could take minutes, if it has half a mind. "Why is hybrid sleep off by default on laptops? (and how do I turn it on?)" https://blogs.msdn.microsoft.com/old...10-00/?p=10703 "Hybrid sleep is a type of sleep state that combines sleep and hibernate. When you put the computer into a hybrid sleep state, it writes out all its RAM to the hard drive (just like a hibernate), and then goes into a low power state that keeps RAM refreshed (just like a sleep). The idea is that you can resume the computer quickly from sleep, but if there is a power failure or some other catastrophe, you can still restore the computer from hibernation. If you're a command line sort of person, you can use this (uses aliases instead of GUIDs). powercfg -setacvalueindex SCHEME_BALANCED SUB_SLEEP HYBRIDSLEEP 1 powercfg -q # query settings of current schema # like "Balanced" or "High Performance" " And what that tells you is, there is a "progression" of controls. Some controls are common enough, that GUI radio buttons exist for enabling them. Other controls are "low-runners", so we make the user "bob for apples" if we need the function. Rest assured, there is a rats nest of GUIDs at the bottom of that mess. Someone once reported there could be 200 registry values associated with ACPI, and I suspect that estimate is on the low side. It took me a total of *six* screen shots, to collect all the nuances of the Power control panel. This is for the Win10 in the Test Machine right now. Hibernate was off on the machine I just upgraded to 1809. These are the precursor steps before GUI-land. In Administrator command prompt. This approach works on WIn7 too (I tried it). powercfg /hibernate /size 100 # implicit ON powercfg /h on # but switch it ON anyway dir /ah C: # then check for a hiberfil.sys This picture is of Windows 10. Windows 7 shares many of these same "features". But the deck chairs have been moved around on Windows 10. https://i.postimg.cc/zv4TZYGr/Win10-...l-Settings.gif Here is a picture for Win7. I would really need a laptop to do this properly, which means changing drives and so on. (The wrong drive is in the laptop at the moment.) https://i.postimg.cc/ZqMyGhR5/Win7-Power-Control.gif Anyway, the toughest part is finding the controls. Between sevenforums.com and tenforums.com, you should be able to find enough "tutorials" for any of these controls. Paul |
#7
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Can I make battery-dropout cause a "sleep"?
On Sun, 24 Feb 2019 00:31:09 +0000, J. P. Gilliver (John) wrote:
In message , Ralph Fox writes: On Sat, 23 Feb 2019 21:58:47 +0000, J. P. Gilliver (John) wrote: Subject: Can I make battery-dropout cause a "sleep"? If that's the right name. At present, if the battery runs down when I'm not looking, on restarting the machine (by pressing the power button) after connecting the supply, it does a restart similar to if I'd shut it down, other than that it gives the "Windows did not shut down properly", and some app.s say _they_ did not shut down properly. Is it possible to set something so that the system does a "sleep", "hibernate", or whatever, so that when I apply power and restart, it wakes itself up how it was? If it is, what settings do I have to change where? I'm not talking about shutdowns instigated by an action, such as closing the lid or pressing the power button. Is it even _possible_ to trap the "battery is too low" situation? W7 HP SP1 32-bit. Yes, you can. See https://www.howtogeek.com/howto/3963...-battery-actio n-in-windows-7/ Thank you. I find I already have "Critical battery action" set to Hibernate (which I think is the default). I have changed "Critical battery level" "On battery" from 2% to 3% - I'll see if that makes any difference. I only have about 3G of RAM, so it shouldn't need long to hibernate. This laptop is set to 5%, and I don't recall ever changing it. From my old (previous) laptop I know that once the battery gets old and loses capacity then 5% will not be enough to successfully hibernate. and https://www.thewindowsclub.com/chang...attery-action- windows-8-7 Thanks. That seems to lead to more or less the same area - except it says you can set a full battery action (or at least notification) too; I can't see that, but maybe that's only available in Windows 8, despite what it said. I set mine to "hibernate", not "sleep". "Sleep" still uses power, even if less. After too many hours in "sleep" the battery will still run down and give the same problem. Yes, I'd go for hibernate too; I want it to save so it doesn't rely on battery. The laptop takes a little longer to restart from "hibernate" than from "sleep", but I think it is worth it to avoid the risk of the battery running down. Indeed. If it _has_ hibernated, should pressing the power button (after reconnecting external power, of course) always make it do a restore-from-hibernated-state, or can it be set to always boot as if from cold? If it can, where is that setting (so I can make sure it's set to restore-from-hibernate)? Here, it always restores from hibernated state. There is this from Microsoft: https://support.microsoft.com/en-nz/...hat-is-running If that did anything to the battery low action, I suspect it might stop it from hibernating (i.e. stop it from saving to hiberfil.sys). I also have both low and critical set to make a sound (a klaxon and a train whistle respectively), and these settings are definitely there when I check them after I've done a restart (and the sounds play when I click the test button): however, the last two times, I'm sure I didn't hear them, and I was sitting here by - in fact using - the computer when the battery ran down. -- Kind regards Ralph |
#8
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Can I make battery-dropout cause a "sleep"?
In message , Mike
writes: [] There are many possibilities. Rather than make a bunch of assumptions, it might be helpful to learn the model number, the battery technology and age and whether this is a new problem or an old problem. Model: Toshiba Portégé. Battery technology: it says "Li-ion" on the battery pack. AFAIK, the machine behaviour has not changed. What's the expected life of the battery? What is the time to failure? If you mean minutes, I'm not sure - I think about 90 (that's another thing: I know _sometimes_ when I hover over the power icon in the tray it gives it me in minutes; however, most of the time, it gives me a percentage. I don't know how to get the other one). If you mean years, I'm not sure again, but it's only a few months old. Does the battery gauge dribble down approximately linearly to the end, or does the drop seem normal down to some number above zero, then drop instantly to a much lower level? Again, I don't know; when I've looked, it seems to be going down reasonably smoothly, but I can't say for near the end as I don't usually deliberately run it there. I _have_ occasionally had the low and critical warnings, though (I think - certainly one of them). [] 2% is not enough when you have a tiny high performance laptop with a small battery. It's a medium performance machine (probably slow by today's standards_ - sticker says it's an i3 processor. The battery is about 6 Ah (I refuse to talk in mAh). I've had some short-term success with Lithium batteries by opening up the pack and manually balancing the cells. I would have in the past. CBA now. Hibernation was useful back when operating systems were small and you had 256KB of RAM. Today, not so much. I really just want it to hibernate if I've accidentally knocked out the power lead and not noticed (-:! Win10 bloat is making it all much worse. I have laptops that have only a few minutes of useful life after booting if I expect to shutdown without crashing... assuming an update doesn't happen...grrr!!! They probably have huge RAM, as well as taking ages to boot. So, set your warning level much higher, turn off hibernation. powercfg -h off That seems rather pointless for my usage pattern. [] -- J. P. Gilliver. UMRA: 1960/1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf Astaire was, of course, peerless, but it's worth remembering that Rogers does everything he does, only backwards and in high heels. - Barry Norman in Radio Times 5-11 January 2013 |
#9
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Can I make battery-dropout cause a "sleep"?
"J. P. Gilliver (John)" wrote:
[...] Thank you. I find I already have "Critical battery action" set to Hibernate (which I think is the default). I have changed "Critical battery level" "On battery" from 2% to 3% - I'll see if that makes any difference. I only have about 3G of RAM, so it shouldn't need long to hibernate. As Ralph also mentioned, 2 or 3% is very low and most likely too low. FYI, my HP laptop is set to 9% and that is the (installation) default setting. |
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Can I make battery-dropout cause a "sleep"?
On 24 Feb 2019 16:17:39 GMT, Frank Slootweg
wrote: "J. P. Gilliver (John)" wrote: [...] Thank you. I find I already have "Critical battery action" set to Hibernate (which I think is the default). I have changed "Critical battery level" "On battery" from 2% to 3% - I'll see if that makes any difference. I only have about 3G of RAM, so it shouldn't need long to hibernate. As Ralph also mentioned, 2 or 3% is very low and most likely too low. FYI, my HP laptop is set to 9% and that is the (installation) default setting. I think my Dell defaulted to 15%, but I bumped it to 20% so long ago that I don't remember anymore. Regardless, IMHO 2-3% seems ridiculously low to me. -- Char Jackson |
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Can I make battery-dropout cause a "sleep"?
In message , Char Jackson
writes: On 24 Feb 2019 16:17:39 GMT, Frank Slootweg wrote: "J. P. Gilliver (John)" wrote: [...] Thank you. I find I already have "Critical battery action" set to Hibernate (which I think is the default). I have changed "Critical battery level" "On battery" from 2% to 3% - I'll see if that makes any difference. I only have about 3G of RAM, so it shouldn't need long to hibernate. As Ralph also mentioned, 2 or 3% is very low and most likely too low. FYI, my HP laptop is set to 9% and that is the (installation) default setting. I think my Dell defaulted to 15%, but I bumped it to 20% so long ago that I don't remember anymore. Regardless, IMHO 2-3% seems ridiculously low to me. I didn't set it to 2% - in fact until told earlier in this thread, I didn't know that it was adjustable, let alone how to do so. Given that fully charged is I think 107 minutes (I still don't know how to switch what is shown when I hover over the tray symbol between percentage and hour-and-minutes), then I agree 2% or even 3% seems a bit optimistic for 3G of RAM. I might put it up some more. -- J. P. Gilliver. UMRA: 1960/1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf Just seen a Dyslexic Yorkshireman wearing a cat flap! |
#12
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Can I make battery-dropout cause a "sleep"?
On Sun, 24 Feb 2019 21:30:55 +0000, J. P. Gilliver (John) wrote:
Given that fully charged is I think 107 minutes Time for a new battery, methinks. Even the absolute worst batteries get 2 to 3 hours when new, and significantly longer times are not uncommon. My Asus laptop got 8 hours or more on a full charge when it was new, and it still gets around 6. (I don't keep careful track, just plug it in when it ells me to -- and that's at 10%.) -- Stan Brown, Oak Road Systems, Tompkins County, New York, USA http://BrownMath.com/ http://OakRoadSystems.com/ Shikata ga nai... |
#13
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Can I make battery-dropout cause a "sleep"?
Stan Brown wrote:
On Sun, 24 Feb 2019 21:30:55 +0000, J. P. Gilliver (John) wrote: Given that fully charged is I think 107 minutes Time for a new battery, methinks. Even the absolute worst batteries get 2 to 3 hours when new, and significantly longer times are not uncommon. My Asus laptop got 8 hours or more on a full charge when it was new, and it still gets around 6. (I don't keep careful track, just plug it in when it ells me to -- and that's at 10%.) It depends on whether your laptop is a "brute" or not. On the Asus thing with dual MXM in SLI, that gets less than 20 minutes or so. And it's recommended when gaming with it, to just leave the (two!) power adapters plugged in. It's not really meant to be "mobile" as such. A 10 hour battery life is possible if your CPU has a 2W SDP. More power is wasted on I/O and display, than on the CPU in such cases. Two hours might be a good median for a commodity laptop, but there's no way of predicting with any accuracy, what some random laptop should offer. Some laptops for example, have two battery pack models, one with more cells than the other, so the number on those depends on which pack type is installed. The best metric, is to collect statistics under controlled conditions when the thing is new. Then compare battery life later, to that figure. Paul |
#14
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Can I make battery-dropout cause a "sleep"?
"J. P. Gilliver (John)"
Sat, 23 Feb 2019 21:58:47 GMT in alt.windows7.general, wrote: If that's the right name. At present, if the battery runs down when I'm not looking, on restarting the machine (by pressing the power button) after connecting the supply, it does a restart similar to if I'd shut it down, other than that it gives the "Windows did not shut down properly", and some app.s say _they_ did not shut down properly. Is it possible to set something so that the system does a "sleep", "hibernate", or whatever, so that when I apply power and restart, it wakes itself up how it was? If it is, what settings do I have to change where? I'm not talking about shutdowns instigated by an action, such as closing the lid or pressing the power button. Is it even _possible_ to trap the "battery is too low" situation? W7 HP SP1 32-bit. Your battery is dropping out too fast for the laptop to do a proper shutdown. You can try adjusting the percentage remaining for it to declare the battery is dying and try to get in sleep mode. Check power management settings. If it's offering to enter sleep at 10% or so, increase that to 20% to give your laptop more time to try and gracefully power down; since the battery is going quickly when it reaches near empty. -- Manure Occurs. |
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Can I make battery-dropout cause a "sleep"?
"J. P. Gilliver (John)"
Sun, 24 Feb 2019 00:31:09 GMT in alt.windows7.general, wrote: In message , Ralph Fox writes: On Sat, 23 Feb 2019 21:58:47 +0000, J. P. Gilliver (John) wrote: Subject: Can I make battery-dropout cause a "sleep"? If that's the right name. At present, if the battery runs down when I'm not looking, on restarting the machine (by pressing the power button) after connecting the supply, it does a restart similar to if I'd shut it down, other than that it gives the "Windows did not shut down properly", and some app.s say _they_ did not shut down properly. Is it possible to set something so that the system does a "sleep", "hibernate", or whatever, so that when I apply power and restart, it wakes itself up how it was? If it is, what settings do I have to change where? I'm not talking about shutdowns instigated by an action, such as closing the lid or pressing the power button. Is it even _possible_ to trap the "battery is too low" situation? W7 HP SP1 32-bit. Yes, you can. See https://www.howtogeek.com/howto/3963...e-low-battery- actio n-in-windows-7/ Thank you. I find I already have "Critical battery action" set to Hibernate (which I think is the default). I have changed "Critical battery level" "On battery" from 2% to 3% - I'll see if that makes any difference. I only have about 3G of RAM, so it shouldn't need long to hibernate. Ahh. You really should raise that value a little more. Your battery has some age on it and it's showing. It drops out from what the laptop thinks is 2% too fast for it to gracefully shut windows down. Give it more time by increasing that value. Yes, I'd go for hibernate too; I want it to save so it doesn't rely on battery. It's going to need more time then. Hibernate is taking the system states in ram and storing it all on disk for you. It needs a little additional time to do this. If the battery reaches 2% but is really about to drop out, your laptop won't have enough time to complete hibernate prep work. If it _has_ hibernated, should pressing the power button (after reconnecting external power, of course) always make it do a restore-from-hibernated-state, or can it be set to always boot as if from cold? If it can, where is that setting (so I can make sure it's set to restore-from-hibernate)? If it's hibernated, pressing the power button will bring it back online and 'resume' where you left off. If you'd prefer it boot cold, then instead of hibernate when battery reaches %, select shutdown instead. I also have both low and critical set to make a sound (a klaxon and a train whistle respectively), and these settings are definitely there when I check them after I've done a restart (and the sounds play when I click the test button): however, the last two times, I'm sure I didn't hear them, and I was sitting here by - in fact using - the computer when the battery ran down. Your battery has one or more weak cells now. It's no longer able to remain stable at lower percentages. It's going from 2% to insufficient voltage to keep the laptop going too fast for your laptop to signal what's going on or properly shutdown/sleep/hibernate. Either get a new battery or increase the percentage value for when the laptop should consider the battery near dead and shutdown. -- How did a fool and his money get together in the first place? |
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