Public bug reported:
After disconnecting USBnet device (Neo Freerunner and Hanlin V3) laptop
nearly freezes, internal mouse and keyboard stop functioning, only
external keyboard works with extreme slowdowns. Nearly any I/O activity
stops in kernel.
Saved dmesg (saving it was not a easy task under such circumstances :)
is attached. Note the lines
[94248.555650] usb1: kevent 1 may have been dropped
[94248.861508] usb 1-5.1.1.4: USB disconnect, address 19
[94252.733225] ACPI: EC: missing confirmations, switch off interrupt mode.
ProblemType: Bug
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: dottedmag 2343 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xfc220000 irq 17'
Mixer name : 'Conexant CX20561 (Hermosa)'
Components : 'HDA:14f15051,17aa211c,00100000
HDA:14f12c06,17aa2122,00100000'
Controls : 14
Simple ctrls : 7
Date: Sun Nov 22 21:25:36 2009
DistroRelease: Ubuntu 9.10
HibernationDevice: RESUME=UUID=526ab56b-f516-4bd6-afe5-06549d645583
MachineType: LENOVO 2765TDG
Package: linux-image-2.6.31-14-generic-pae 2.6.31-14.48
PccardctlIdent:
Socket 0:
no product info available
PccardctlStatus:
Socket 0:
no card
ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.31-14-generic-pae
root=/dev/mapper/hostname-root ro acpi_osi=Linux quiet splash
ProcEnviron:
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/zsh
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic-pae
RelatedPackageVersions:
linux-backports-modules-2.6.31-14-generic-pae 2.6.31-14.16
linux-firmware 1.24
SourcePackage: linux
Uname: Linux 2.6.31-14-generic-pae i686
XsessionErrors:
(gnome-settings-daemon:2355): GLib-CRITICAL **: g_propagate_error: assertion
`src != NULL' failed
(polkit-gnome-authentication-agent-1:2400): GLib-CRITICAL **:
g_once_init_leave: assertion `initialization_value != 0' failed
dmi.bios.date: 08/19/2008
dmi.bios.vendor: LENOVO
dmi.bios.version: 7UET43WW (1.13 )
dmi.board.name: 2765TDG
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvr7UET43WW(1.13):bd08/19/2008:svnLENOVO:pn2765TDG:pvrThinkPadT400:rvnLENOVO:rn2765TDG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2765TDG
dmi.product.version: ThinkPad T400
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386
--
Extreme slowdown after disconnecting USBnet device on Thinkpad T400
https://bugs.launchpad.net/bugs/486694
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