Usb mouse delay using battery

[demian85]

When i use the laptop without ac power mouse works perfectly, but when using battery, after 5 seconds of inactivity or so, the mouse does not respond instantly, i have to move it like 5 seconds or so... it happened with a microsoft usb wireless and now i have a brand new logitech with usb nano receiver. same problem!
what can i do?
thanks.

pd: using ubuntu 10.10 on a Samsung R480 laptop.

[Dimon8211]

As I understand no problem when laptop works from power supply? Try to delete /etc/pm/power.d/samsung-tools_usb-autosuspend file. It helped me with the same issue.

Best regards,

[demian85]

seems it worked, but, what does this file do? and why there isn't any option to disable usb suspension?

[Dimon8211]

seems it worked, but, what does this file do? and why there isn't any option to disable usb suspension?

Looks like Voria included Usb-suspend function in Samsung tool for long battery life (there was thread somewhere here). But I have the same pbm as you with my usb mouse. I have to delete this file after each samsung-tools or kernel (not sure which one) update.

Best regards,

[Woulouf]

Same probleme here with a VX Nano.

Thanks for the tip

[montini]

so is samsung-tools going to be updated for natty (ubuntu 11.04)? I have the problem about USB mouse sleeping_each_2_seconds after suspend/resume cycle. I did

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sudo chmod -x /etc/pm/power.d/samsung-tools_usb-autosuspend

to make it not executable, but I want to know that my power resources are used optimally... Maybe there is an option to tweak that 2 seconds time to something more reasonable - let's say, 60 seconds? Where can I do that?
(using samsung n220)

[LeeS]

Maybe there is an option to tweak that 2 seconds time to something more reasonable - let's say, 60 seconds? Where can I do that?
(using samsung n220)

Edit /etc/pm/power/d/samsung-tools_usb-autosuspend and change "2" in the line

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echo "2" > $i

to the number of seconds you want.