Arch Linux

elvalith

Member

Registered: 2005-07-26

Posts: 28

Hotplugging USB Device Fails

If I try to plug in a usb device (usb soundcard, harddrive, mouse, etc.) it is not detected unless it is present at boot. For example if I have a usb drive plugged in during boot I can detect hotplugged usb drives, but if I don't have one plugged in at boot time linux won't detect it (no /dev/sdb).

Does anyone have any suggestions on how I can resolve this? Thanks.

EDIT:
This bug sounds similar to my problem. I'll have to try the "lsusb -v" thing sometime later.
https://bugs.archlinux.org/task/29526

Last edited by elvalith (2013-03-31 09:46:10)

cfr

Member

From: Cymru

Registered: 2011-11-27

Posts: 7,140

Re: Hotplugging USB Device Fails

https://wiki.archlinux.org/index.php/Udev

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mich41

Member

Registered: 2012-06-22

Posts: 796

Re: Hotplugging USB Device Fails

Do they show up in lsusb output? Anything in dmesg?

It's been a while since I've seen problems with udev.

johannesg00

Member

Registered: 2010-11-30

Posts: 74

Re: Hotplugging USB Device Fails

Hey I had the same problem and is was an issue with the power save/autosuspend settings of the usb controller. Do you have installed any power saving tool?

elvalith

Member

Registered: 2005-07-26

Posts: 28

Re: Hotplugging USB Device Fails

Hey I had the same problem and is was an issue with the power save/autosuspend settings of the usb controller. Do you have installed any power saving tool?

I have started using pm-utils recently (pm-suspend in particular). I tried hotplugging my usb drive after rebooting and it appeared as /dev/sdb this time. Could you tell me what happened in your case?

Thanks.

EDIT:
This bug sounds similar to my problem. I'll have to try the "lsusb -v" thing sometime later.
https://bugs.archlinux.org/task/29526

Last edited by elvalith (2013-03-31 09:45:18)