Windows 7 misses keystrokes from internal keyboard after hibernation on Acer Aspire 5820
After waking my computer (Acer Aspire with the factory default Windows 7 install and divers, Windows update running) from hibernation, it is a pain to type, since on average 5-10 keypresses are missing per 100 presses, using the laptop's keyboard.
Steps to reproduce:
- Power off
- Power on, wait for system to become usable
Open Notepad, for five times enter 10x the same character. This gives a similar pattern of 50 characters total:
xxxxxxxxxxyyyyyyyyyyaaaaaaaaaassssssssssdddddddddd
Optionally repeat. Everything is fine this far.
- Hibernate
- Power on and resume
- Repeat steps 3-4. This time approximately 3-5 character will be missing from each 50 characters
What I ruled out:
- putting to Sleep or just Locking and resuming from there does not cause problem
battery / AC usage does not matter- Internet connection does not matter
- running processes seem to be the same before and after hibernation
- keypress speed doesn't really matter. For the test I use a nominal 3-5 strokes/second beat.
- plugging in an external USB keyboard works fine, but the built-in one still misbehaves
What could be the problem? How could I diagnose if the keypresses arrive in, but get swallowed at some point? (maybe some nasty keyboard handler hook misbehaves?).
Pushing the PowerSmart button and toggling to power saving state fixes the problem. Also, toggling it again back to the original state keeps it fixed. So this may be a fine workaround, but is not a conforming solution.
windows-7 keyboard hibernate acer-aspire
edited Feb 28 '15 at 13:46
random♦
12.9k84757
asked Feb 17 '11 at 13:38
ronron
24338
add a comment |
After waking my computer (Acer Aspire with the factory default Windows 7 install and divers, Windows update running) from hibernation, it is a pain to type, since on average 5-10 keypresses are missing per 100 presses, using the laptop's keyboard.
Steps to reproduce:
- Power off
- Power on, wait for system to become usable
Open Notepad, for five times enter 10x the same character. This gives a similar pattern of 50 characters total:
xxxxxxxxxxyyyyyyyyyyaaaaaaaaaassssssssssdddddddddd
Optionally repeat. Everything is fine this far.
- Hibernate
- Power on and resume
- Repeat steps 3-4. This time approximately 3-5 character will be missing from each 50 characters
What I ruled out:
- putting to Sleep or just Locking and resuming from there does not cause problem
battery / AC usage does not matter- Internet connection does not matter
- running processes seem to be the same before and after hibernation
- keypress speed doesn't really matter. For the test I use a nominal 3-5 strokes/second beat.
- plugging in an external USB keyboard works fine, but the built-in one still misbehaves
What could be the problem? How could I diagnose if the keypresses arrive in, but get swallowed at some point? (maybe some nasty keyboard handler hook misbehaves?).
Pushing the PowerSmart button and toggling to power saving state fixes the problem. Also, toggling it again back to the original state keeps it fixed. So this may be a fine workaround, but is not a conforming solution.
windows-7 keyboard hibernate acer-aspire
edited Feb 28 '15 at 13:46
random♦
12.9k84757
asked Feb 17 '11 at 13:38
ronron
24338
add a comment |
After waking my computer (Acer Aspire with the factory default Windows 7 install and divers, Windows update running) from hibernation, it is a pain to type, since on average 5-10 keypresses are missing per 100 presses, using the laptop's keyboard.
Steps to reproduce:
- Power off
- Power on, wait for system to become usable
Open Notepad, for five times enter 10x the same character. This gives a similar pattern of 50 characters total:
xxxxxxxxxxyyyyyyyyyyaaaaaaaaaassssssssssdddddddddd
Optionally repeat. Everything is fine this far.
- Hibernate
- Power on and resume
- Repeat steps 3-4. This time approximately 3-5 character will be missing from each 50 characters
What I ruled out:
- putting to Sleep or just Locking and resuming from there does not cause problem
battery / AC usage does not matter- Internet connection does not matter
- running processes seem to be the same before and after hibernation
- keypress speed doesn't really matter. For the test I use a nominal 3-5 strokes/second beat.
- plugging in an external USB keyboard works fine, but the built-in one still misbehaves
What could be the problem? How could I diagnose if the keypresses arrive in, but get swallowed at some point? (maybe some nasty keyboard handler hook misbehaves?).
Pushing the PowerSmart button and toggling to power saving state fixes the problem. Also, toggling it again back to the original state keeps it fixed. So this may be a fine workaround, but is not a conforming solution.
windows-7 keyboard hibernate acer-aspire
edited Feb 28 '15 at 13:46
random♦
12.9k84757
asked Feb 17 '11 at 13:38
ronron
24338
After waking my computer (Acer Aspire with the factory default Windows 7 install and divers, Windows update running) from hibernation, it is a pain to type, since on average 5-10 keypresses are missing per 100 presses, using the laptop's keyboard.
Steps to reproduce:
- Power off
- Power on, wait for system to become usable
Open Notepad, for five times enter 10x the same character. This gives a similar pattern of 50 characters total:
xxxxxxxxxxyyyyyyyyyyaaaaaaaaaassssssssssdddddddddd
Optionally repeat. Everything is fine this far.
- Hibernate
- Power on and resume
- Repeat steps 3-4. This time approximately 3-5 character will be missing from each 50 characters
What I ruled out:
- putting to Sleep or just Locking and resuming from there does not cause problem
battery / AC usage does not matter- Internet connection does not matter
- running processes seem to be the same before and after hibernation
- keypress speed doesn't really matter. For the test I use a nominal 3-5 strokes/second beat.
- plugging in an external USB keyboard works fine, but the built-in one still misbehaves
What could be the problem? How could I diagnose if the keypresses arrive in, but get swallowed at some point? (maybe some nasty keyboard handler hook misbehaves?).
Pushing the PowerSmart button and toggling to power saving state fixes the problem. Also, toggling it again back to the original state keeps it fixed. So this may be a fine workaround, but is not a conforming solution.
windows-7 keyboard hibernate acer-aspire
windows-7 keyboard hibernate acer-aspire
edited Feb 28 '15 at 13:46
random♦
12.9k84757
asked Feb 17 '11 at 13:38
ronron
24338
edited Feb 28 '15 at 13:46
random♦
12.9k84757
asked Feb 17 '11 at 13:38
ronron
24338
edited Feb 28 '15 at 13:46
random♦
12.9k84757
edited Feb 28 '15 at 13:46
random♦
12.9k84757
edited Feb 28 '15 at 13:46
random♦
12.9k84757
12.9k84757
asked Feb 17 '11 at 13:38
ronron
24338
asked Feb 17 '11 at 13:38
ronron
24338
asked Feb 17 '11 at 13:38
ronron
24338
24338
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
Did you try to Allow hybrid sleep to see if the problem persists?
Windows 7 Hibernate Problem
There are at least two different types
of hibernation problems. One problem
is that your computer is not waking up
properly. Alternatively your problem
is there is no Hibernate option on the
Windows 7 Shut Down menu. In both
cases check the 'Allow hybrid sleep'
setting.
1) For any hibernation problems the
easiest solution is to set 'Allow
hybrid sleep' to: 'Off'. (See
screenshot).
By design, hybrid incorporates both
Sleep and Hibernate, thus you only see
Sleep on the Shutdown menu. Also, by
default, desktops are set to 'Allow
hybrid sleep :On'.
Trap: Before you can change any of
the Balanced settings, first you must
click on Change settings that are
currently unavailable. (See
screenshot)
Read more about hibernating problems here.
answered Feb 17 '11 at 14:40
JohnnyJohnny
6971718
1
@ron: I didn't receive any feedback whether your problem is solved. Dis you tried my suggestion? Did you used another fix?
– Johnny
Apr 20 '11 at 10:23
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Did you try to Allow hybrid sleep to see if the problem persists?
Windows 7 Hibernate Problem
There are at least two different types
of hibernation problems. One problem
is that your computer is not waking up
properly. Alternatively your problem
is there is no Hibernate option on the
Windows 7 Shut Down menu. In both
cases check the 'Allow hybrid sleep'
setting.
1) For any hibernation problems the
easiest solution is to set 'Allow
hybrid sleep' to: 'Off'. (See
screenshot).
By design, hybrid incorporates both
Sleep and Hibernate, thus you only see
Sleep on the Shutdown menu. Also, by
default, desktops are set to 'Allow
hybrid sleep :On'.
Trap: Before you can change any of
the Balanced settings, first you must
click on Change settings that are
currently unavailable. (See
screenshot)
Read more about hibernating problems here.
answered Feb 17 '11 at 14:40
JohnnyJohnny
6971718
1
@ron: I didn't receive any feedback whether your problem is solved. Dis you tried my suggestion? Did you used another fix?
– Johnny
Apr 20 '11 at 10:23
add a comment |
Did you try to Allow hybrid sleep to see if the problem persists?
Windows 7 Hibernate Problem
There are at least two different types
of hibernation problems. One problem
is that your computer is not waking up
properly. Alternatively your problem
is there is no Hibernate option on the
Windows 7 Shut Down menu. In both
cases check the 'Allow hybrid sleep'
setting.
1) For any hibernation problems the
easiest solution is to set 'Allow
hybrid sleep' to: 'Off'. (See
screenshot).
By design, hybrid incorporates both
Sleep and Hibernate, thus you only see
Sleep on the Shutdown menu. Also, by
default, desktops are set to 'Allow
hybrid sleep :On'.
Trap: Before you can change any of
the Balanced settings, first you must
click on Change settings that are
currently unavailable. (See
screenshot)
Read more about hibernating problems here.
answered Feb 17 '11 at 14:40
JohnnyJohnny
6971718
1
@ron: I didn't receive any feedback whether your problem is solved. Dis you tried my suggestion? Did you used another fix?
– Johnny
Apr 20 '11 at 10:23
add a comment |
Did you try to Allow hybrid sleep to see if the problem persists?
Windows 7 Hibernate Problem
There are at least two different types
of hibernation problems. One problem
is that your computer is not waking up
properly. Alternatively your problem
is there is no Hibernate option on the
Windows 7 Shut Down menu. In both
cases check the 'Allow hybrid sleep'
setting.
1) For any hibernation problems the
easiest solution is to set 'Allow
hybrid sleep' to: 'Off'. (See
screenshot).
By design, hybrid incorporates both
Sleep and Hibernate, thus you only see
Sleep on the Shutdown menu. Also, by
default, desktops are set to 'Allow
hybrid sleep :On'.
Trap: Before you can change any of
the Balanced settings, first you must
click on Change settings that are
currently unavailable. (See
screenshot)
Read more about hibernating problems here.
answered Feb 17 '11 at 14:40
JohnnyJohnny
6971718
Did you try to Allow hybrid sleep to see if the problem persists?
Windows 7 Hibernate Problem
There are at least two different types
of hibernation problems. One problem
is that your computer is not waking up
properly. Alternatively your problem
is there is no Hibernate option on the
Windows 7 Shut Down menu. In both
cases check the 'Allow hybrid sleep'
setting.
1) For any hibernation problems the
easiest solution is to set 'Allow
hybrid sleep' to: 'Off'. (See
screenshot).
By design, hybrid incorporates both
Sleep and Hibernate, thus you only see
Sleep on the Shutdown menu. Also, by
default, desktops are set to 'Allow
hybrid sleep :On'.
Trap: Before you can change any of
the Balanced settings, first you must
click on Change settings that are
currently unavailable. (See
screenshot)
Read more about hibernating problems here.
answered Feb 17 '11 at 14:40
JohnnyJohnny
6971718
answered Feb 17 '11 at 14:40
JohnnyJohnny
6971718
answered Feb 17 '11 at 14:40
JohnnyJohnny
6971718
answered Feb 17 '11 at 14:40
JohnnyJohnny
6971718
6971718
1
@ron: I didn't receive any feedback whether your problem is solved. Dis you tried my suggestion? Did you used another fix?
– Johnny
Apr 20 '11 at 10:23
add a comment |
1
@ron: I didn't receive any feedback whether your problem is solved. Dis you tried my suggestion? Did you used another fix?
– Johnny
Apr 20 '11 at 10:23
1
1
@ron: I didn't receive any feedback whether your problem is solved. Dis you tried my suggestion? Did you used another fix?
– Johnny
Apr 20 '11 at 10:23
@ron: I didn't receive any feedback whether your problem is solved. Dis you tried my suggestion? Did you used another fix?
– Johnny
Apr 20 '11 at 10:23
add a comment |
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