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I have been getting a very annoying problem since recently in Ubuntu 12.04, probably due to another update that did more bad than good...

When I resume from sleep on battery power my Lenovo Thinkpad T420, my wireless laser mouse (Logitech M705) freezes everytime I leave it for 2 seconds. It then starts moving again when I shake it for 5 seconds. The touchpad works normally.

I'm guessing the mouse enters some sleep mode and I'd like to know where to change this "timeout" value.

R Pennese
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2 Answers2

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I found a solution on this page:

http://ubuntuforums.org/showthread.php?t=1675277

here's what I did:

in /etc/laptop-mode/conf.d/usb-autosuspend.conf

CONTROL_USB_AUTOSUSPEND=0

And everything works normal now.

R Pennese
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  • Did you have to reboot for this to work? – naught101 Jul 10 '13 at 02:20
  • I rebooted, and it appears to have worked. I guess there's probably a way to restart it without rebooting, but I've always had trouble find out stuff like that for USB. Anyway, thanks for the research! – naught101 Jul 10 '13 at 02:30
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I'm not sure which kernel module the mouse drivers are using (you could check that). There's the possibility to mark modules problematic to suspend/resume, having them removed at suspend - and reloaded at resume. This is done using the SUSPEND_MODULES setting, as e.g. described in this question. Worth trying.

Community
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Izzy
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  • Thanks Izzy, I've just edited the question, it no longer is a suspend/resume problem but a problem occurring only on battery power. – R Pennese Jul 11 '12 at 07:48
  • Oh -- I see. But your new description seems even more annoying: 5s after resume only is something one can live with, but in the middle of work... Good luck for a fast solution! – Izzy Jul 11 '12 at 08:33