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#1 2012-01-09 19:27:49
- Doctor Drive
- Member
- From: Poland
- Registered: 2010-08-11
- Posts: 167
[Solved] USB devices do not work as they used to anymore
I use the kernel provided in core linux 3.1.8-1
After bluetooth adapter plugged
[11019.968960] usb 6-1: new full speed USB device number 4 using uhci_hcdAfter USB Flash Drive is plugged
[11058.595651] usb 2-2: new high speed USB device number 7 using ehci_hcdThe devices:
$ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 5986:0195 Acer, Inc
Bus 008 Device 002: ID 04f3:0234 Elan Microelectronics Corp.
Bus 006 Device 004: ID 0a5c:2101 Broadcom Corp. Bluetooth Controller
Bus 002 Device 007: ID 13fe:1d00 Kingston Technology Company Inc. DataTraveler 2.0 1GB/4GB Flash Drive / Patriot Xporter 4GB Flash DriveBluedevil: no adapters found.
USB Flash drive: /dev/sd* entry is not created so mount is impossible.
Only local HDD partition entries are in the list
$ ls /dev/sd*
/dev/sda /dev/sda1 /dev/sda2 /dev/sda3 /dev/sda4 /dev/sda5 /dev/sda6 /dev/sda7Last edited by Doctor Drive (2012-01-10 20:15:32)
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#3 2012-01-10 14:25:33
- Doctor Drive
- Member
- From: Poland
- Registered: 2010-08-11
- Posts: 167
Re: [Solved] USB devices do not work as they used to anymore
Have you rebooted since the kernel upgraded? That has bit me several times....not sure how to avoid it without the reboot.
Scott
Yup, it started phew days ago (ven before last kernel upgrade), since then I rebooted several times.
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#5 2012-01-10 17:21:32
- Doctor Drive
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- From: Poland
- Registered: 2010-08-11
- Posts: 167
Re: [Solved] USB devices do not work as they used to anymore
Try disabling USB power saving.
Shouldn't this feature be enabled by the user? I did not enable it.
If it's really enabled, how should I turn it off?
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#6 2012-01-10 20:01:28
- Stebalien
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- Registered: 2010-04-27
- Posts: 1,239
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Re: [Solved] USB devices do not work as they used to anymore
Stebalien wrote:Try disabling USB power saving.
Shouldn't this feature be enabled by the user? I did not enable it.
If it's really enabled, how should I turn it off?
I assumed that you were using laptop-mode-tools. laptop-mode-tools autosuspends usb devices when the laptop is on battery power. Usually this would only suspend inactive devices but I have been experiencing a kernel bug that causes devices to be incorrectly suspended (exhibiting the same symptoms that you described).
Try adding usbcore.autosuspend=-1 to the kernel command line.
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#7 2012-01-10 20:15:19
- Doctor Drive
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- From: Poland
- Registered: 2010-08-11
- Posts: 167
Re: [Solved] USB devices do not work as they used to anymore
I assumed that you were using laptop-mode-tools. laptop-mode-tools autosuspends usb devices when the laptop is on battery power. Usually this would only suspend inactive devices but I have been experiencing a kernel bug that causes devices to be incorrectly suspended (exhibiting the same symptoms that you described).
No.
Try adding usbcore.autosuspend=-1 to the kernel command line.
That solves it. Thanks!
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#8 2012-07-14 21:29:05
- veox
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- Registered: 2008-10-28
- Posts: 49
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Re: [Solved] USB devices do not work as they used to anymore
Try adding usbcore.autosuspend=-1 to the kernel command line.
Strangely enough, this helped me, too, after updating the kernel package yesterday (3.4.1->3.4.4).
As a temporary solution, though, all devices did get enumerated after issuing
lsusb -v.
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