Public bug reported:
I was Safely Removing a USB from the launcher when a a black screen with
error messages. Something like the stuff that goes behind X. Pressing
"Esc" brought X back. After that I wasn't able to attach other USB
devices to the computer. Here is something from dmesg that was showing
on the screen at that time:
[ 82.368085] [<ffffffff81175520>] sys_open+0x20/0x30
[ 82.368085] [<ffffffff8165bb02>] system_call_fastpath+0x16/0x1b
[ 82.368085] Code: 83 ec 20 48 89 5d e0 4c 89 65 e8 4c 89 6d f0 4c 89 75 f8
66 66 66 66 90 8b 05 0d 9a ad 00 48 8b 9f 38 03 00 00 49 89 fc c1 e8 15 <4c> 8b
6b 08 83 e0 07 83 f8 03 0f 87 0d 02 00 00 41 8b 85 70 06
[ 82.368085] RIP [<ffffffff81440c20>] sd_revalidate_disk+0x30/0x2a0
[ 82.368085] RSP <ffff880056d13b18>
[ 82.368085] CR2: 0000000000000008
[ 82.384059] WARNING! power/level is deprecated; use power/control instead
[ 82.402354] ---[ end trace 242f7f2f336773ef ]---
[ 82.464104] usb 1-4: USB disconnect, device number 4
[ 116.996042] usb 1-4: new high-speed USB device number 7 using ehci_hcd
[ 117.130913] scsi4 : usb-storage 1-4:1.0
[ 118.128658] scsi 4:0:0:0: Direct-Access Kingston DataTraveler 2.0 1.00
PQ: 0 ANSI: 2
[ 118.129704] sd 4:0:0:0: Attached scsi generic sg4 type 0
[ 118.130207] sd 4:0:0:0: [sdd] 15769600 512-byte logical blocks: (8.07
GB/7.51 GiB)
[ 118.131795] sd 4:0:0:0: [sdd] Write Protect is off
[ 118.131799] sd 4:0:0:0: [sdd] Mode Sense: 23 00 00 00
[ 118.132657] sd 4:0:0:0: [sdd] No Caching mode page present
[ 118.132661] sd 4:0:0:0: [sdd] Assuming drive cache: write through
[ 131.232234] sdb: detected capacity change from 1946157056 to 0
[ 135.456764] usb 1-4: USB disconnect, device number 7
[ 162.326151] [drm:drm_mode_getfb] *ERROR* invalid framebuffer id
[ 169.874347] [drm:drm_mode_getfb] *ERROR* invalid framebuffer id
[ 178.182311] [drm:drm_mode_getfb] *ERROR* invalid framebuffer id
[ 182.068369] [drm:drm_mode_getfb] *ERROR* invalid framebuffer id
[ 186.761924] [drm:drm_mode_getfb] *ERROR* invalid framebuffer id
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-12-generic 3.2.0-12.21
ProcVersionSignature: Ubuntu 3.2.0-12.21-generic 3.2.2
Uname: Linux 3.2.0-12-generic x86_64
NonfreeKernelModules: wl
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
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: alex 1696 F.... pulseaudio
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not
found.
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xfe8f8000 irq 45'
Mixer name : 'Conexant CX20582 (Pebble)'
Components : 'HDA:14f15066,102802f5,00100300'
Controls : 9
Simple ctrls : 6
Date: Thu Feb 2 11:44:48 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MachineType: Dell Inc. Vostro 320
ProcEnviron:
LANGUAGE=en_CA:en
PATH=(custom, no user)
LANG=en_CA.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-12-generic
root=UUID=1d8ee941-9cf2-47ff-88fc-82fdaa19f1c2 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.2.0-12-generic N/A
linux-backports-modules-3.2.0-12-generic N/A
linux-firmware 1.68
RfKill:
0: brcmwl-0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: linux
UpgradeStatus: Upgraded to precise on 2012-01-30 (2 days ago)
dmi.bios.date: 10/27/2009
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.2.0
dmi.board.name: 0N867P
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 3
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias:
dmi:bvnDellInc.:bvr1.2.0:bd10/27/2009:svnDellInc.:pnVostro320:pvr00:rvnDellInc.:rn0N867P:rvrA01:cvnDellInc.:ct3:cvrNotSpecified:
dmi.product.name: Vostro 320
dmi.product.version: 00
dmi.sys.vendor: Dell Inc.
** Affects: unity
Importance: Undecided
Status: New
** Tags: 5.2-rc1 amd64 apport-bug precise running-unity unity
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https://bugs.launchpad.net/bugs/925574
Title:
Ejecting USB from the launcher brought a black screen with error
messages
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