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Old 17th July 2008
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Default USB not working after suspend

Hello,

One of the laptops I manage is having problems with the suspend/resume functions. After a few suspends/resumes, all USB devices suddenly stop working. Even the laser of the USB mouse stops working.

Do you think that this problems is more related to the hardware of the machine? Or could this be some kind of kernel module failling?

The laptop is an IBM ThinkPad X31. It is running a fresh install of Ubuntu 8.04 LTS.


Thanks for any insights.
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Old 17th July 2008
davidgurvich davidgurvich is offline
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For the mouse try adding
Quote:
hint.psm.0.flags="0x3000"
to /boot/loader.conf. For usb in general look at /etc/rc.suspend and /etc/rc.resume. I added an 'ifconfig ... down' statement to rc.suspend and reset in rc.resume. If it's only one or two devices something similar may work.

Changing the irq settings in the bios may help. On an older thinkpad I've set them to auto, the default was 11.

Last edited by davidgurvich; 17th July 2008 at 04:35 PM.
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Old 17th July 2008
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Thanks for the reply davidgurvich, but I think your solution applies only to *BSD OSes. I am currently dealing with Ubuntu 8.04 LTS

I'll try the IRQ thing, thanks!

Thanks anyway!
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Old 18th July 2008
davidgurvich davidgurvich is offline
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Sorry about that, I missed which forum the post was in. Unloading the usb modules on suspend and reloading them on resume may work. There should be specific scripts for suspend and resume in /etc/ somewhere. You may have to restart some services also.
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Old 21st July 2008
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Thanks for the reply. I am going to test a few things. I'll post the solution back here when something working will be in place.
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Old 11th August 2008
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Reloading the usb modules only freezes the terminal... and playing with the IRQs was of no help...

Suggestions are still appreciated. Thanks fo your posts davidgurvich.
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