[uvcvideo causes ehci_hcd to force halt]Trying to use built-in webcam in certain notebooks/laptops breaks other USB devices

Since the system goes permanently offline when this bug occurs, I have attached the bug report as an offline apport file.

Dmesg gives the following messages when running any piece of software that might use the webcam (I've tested aMSN, cheese and Ekiga):

[ 979.810911] ehci_hcd 0000:00:13.5: force halt; handhake ffffc90000364424 00004000 00000000 -> -110
[ 981.040108] rtl8187: wireless radio switch turned off
[ 981.120293] wlan0: deauthenticating from 00:18:39:2f:ba:b2 by local choice (reason=3)

I was able to make cheese run by doing a sudo nano /etc/modprobe.d/uvcvideo.conf and writing the following line in there:
options uvcvideo quirks=1

With this, I am able to run cheese once with the web cam working properly. Running cheese again or trying to run any other software has so far resulted in the same behaviour as described earlier.

I have the same behaviour on a Toshiba Satellite A210-19B PSAFGE.

Writing the line on uvcvideo.conf did exactly as Andreas described.

Daniel, can you post the output of 'lsusb'?

In my case the web camera in question is
Bus 001 Device 003: ID 04f2:b070 Chicony Electronics Co., Ltd

The wireless device is
Bus 001 Device 002: ID 0bda:8198 Realtek Semiconductor Corp. RTL8187B Wireless Adapter

Also after the bug occurs, is there comparable output in your dmesg?

Scratch that last one, read the new improved bug report and follow the instructions for including all the necessary info. :)

I am sending the apport file for the Toshiba Satellite A210-19B PSAFGE, which uses the same Chicony camera and Realtek wireless adapter.

This is my report...

Had this issue in 9.04, was under the impression that the 2.6.32.2 kernel would fix it (tried that custom kernel with 9.04 per Bug 462336, and webcam worked, but wireless didn't..)

Gateway M-1625

Bus 001 Device 004: ID 04f2:b027 Chicony Electronics Co., Ltd Gateway USB 2.0 Webcam
Bus 001 Device 003: ID 0bda:8189 Realtek Semiconductor Corp. RTL8187B Wireless 802.11g 54Mbps Network Adapter
Bus 001 Device 002: ID 0bda:0158 Realtek Semiconductor Corp. Mass Storage Device
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Hi Andreas,

This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 554263

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

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Hi guys...i have tried to install GUVCWIEV and when i try to use it with my webcam with wi.fi card in funcions all work perfectly...wi-fi don't crash and webcam show me the image...but the problem persist when i use cheese o emesene...anyone have news??

Same problem on a Gateway T-1625, using Linux Mint based on Ubuntu Lucid.
I couldn't generate the report.

[ 1309.949090] uvcvideo: Failed to set UVC probe control : -110 (exp. 26).
[ 1314.962783] ehci_hcd 0000:00:13.5: force halt; handhake f805c024 00004000 00004000 -> -110
similar problem with logitec camera on HP6715 laptop.
Bus 001 Device 005: ID 046d:0807 Logitech, Inc.

System must be rebooted before the uvc camera works again.

System works fine with SPC900NC camera using pwc driver.

I could not generate the report.

AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: SB [HDA ATI SB], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: george 1701 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'SB'/'HDA ATI SB at 0xf0500000 irq 16'
   Mixer name : 'Conexant CX20561 (Hermosa)'
   Components : 'HDA:14f15051,1179ff59,00100000'
   Controls : 15
   Simple ctrls : 8
Card1.Amixer.info:
 Card hw:1 'HDMI'/'HDA ATI HDMI at 0xf0210000 irq 19'
   Mixer name : 'ATI R6xx HDMI'
   Components : 'HDA:1002aa01,00aa0100,00100000'
   Controls : 4
   Simple ctrls : 1
Card1.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
DistroRelease: Ubuntu 10.04
HibernationDevice: RESUME=UUID=ea85eca3-4d78-4adf-aab5-233e1075b95c
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
MachineType: TOSHIBA Satellite A300D
NonfreeKernelModules: fglrx
Package: linux (not installed)
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-24-generic root=UUID=9dc9b68b-e9da-4362-8e23-62c2d9f4e227 ro quiet splash radeon.modeset=1
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.utf8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-24.39-generic 2.6.32.15+drm33.5
Regression: Yes
RelatedPackageVersions: linux-firmware 1.34.1
Reproducible: Yes
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
Tags: lucid graphics regression-release needs-upstream-testing
Uname: Linux 2.6.32-24-generic x86_64
UserGroups: adm admin audio cdrom dialout lpadmin plugdev sambashare vboxusers
dmi.bios.date: 05/19/2008
dmi.bios.vendor: TOSHIBA
dmi.bios.version: V2.10
dmi.board.name: Satellite A300D
dmi.board.vendor: TOSHIBA
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 1
dmi.chassis.vendor: TOSHIBA
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnTOSHIBA:bvrV2.10:bd05/19/2008:svnTOSHIBA:pnSatelliteA300D:pvrPSAK4E-00X00KGE:rvnTOSHIBA:rnSatelliteA300D:rvrNotApplicable:cvnTOSHIBA:ct1:cvrN/A:
dmi.product.name: Satellite A300D
dmi.product.version: PSAK4E-00X00KGE
dmi.sys.vendor: TOSHIBA

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One thing to note is that, if the wifi is disabled the webcam works fine!

Probably very similar problem on my
Dell (AMD TurionX2 2000MHz, AMD RS485 Northbridge, AMD SB600 Southbridge) and Ubuntu 10.04 64-bit.

Linux version 2.6.32-24-generic (buildd@crested) (gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5) ) #42-Ubuntu SMP Fri Aug 20 14:21:58 UTC 2010 (Ubuntu 2.6.32-24.42-generic 2.6.32.15+drm33.5)

After several on/off cycles of the external USB webcam (e.g. I run cheese or skype several times, camera still connected)
camera suddenly stops working (I cannot turn it on again).

It is still listed in lsusb, but is not listed between multimedia devices anymore...

All other connected USB devices continue working,
but it is not possible to connect new USB devices, e.g. flash disk dongle or external HDD,
they are not listed in lsusb and there are no traces of them in kernel log...

I have to reboot the system to get the camera and USB system working again.

Kernel log shows:

kernel: [ 4467.132592] uvcvideo: Failed to set UVC probe control : -110 (exp. 26).
kernel: [ 4467.442591] uvcvideo: Failed to query (135) UVC control 6 (unit 3) : -110 (exp. 2).
kernel: [ 4480.462593] uvcvideo: Failed to query (135) UVC control 3 (unit 3) : -110 (exp. 2).
kernel: [ 4480.772594] uvcvideo: Failed to query (135) UVC control 9 (unit 3) : -110 (exp. 2).
kernel: [ 4481.082607] uvcvideo: Failed to query (135) UVC control 2 (unit 3) : -110 (exp. 2).
kernel: [ 4488.670075] uvcvideo: Failed to set UVC commit control : -110 (exp. 26).
kernel: [ 4502.076524] ehci_hcd 0000:00:13.5: force halt; handhake ffffc90000c4a424 00004000 00004000 -> -110

I think the problem is triggered by uvcvideo and causes ehci_hcd to crash.

Is somebody from kernel team aware of the problem with ehci?
I think we should have USB system tuned to perfection in 2010, it's very essential!

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu development release http://cdimage.ubuntu.com/daily-live/current/ . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

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I have now successfully tested the latest daily build of Maverick LiveCD.
The bug still occurs exactly as described.

Unfortunately I cannot personally test the upstream kernel as the hardware I have available for testing is not mine and is in active use. Could someone else who has the same problem contribute this information? That way maybe we could get the ball rolling on this one...

- Andreas

I have tested Ubuntu 10.10 and the bugs still remain....

Same bug in 10.10 desktop, running from USB stick (yep. you got it.) See comment #9 for details.

I would like to take this bug report upstream, does anyone know how to reach the uvcvideo developers? I looked around at http://www.ideasonboard.org/uvc/ and could not find any contact information.

i /seem/ to experience a similar bug. My bug report is here : https://bugs.launchpad.net/ubuntu/+source/linux/+bug/663638

I think I have narrowed this problem down. It seems as if these criteria are common among bug reports:
a)64-bit processor and/or kernel
b)ati/amd graphics card using flgrx driver
c)usb webcam and usb wireless card
d)only disconnected when trying to ACCESS webcam
e)uvcvideo driver
I believe this is a conflict between the FLGRX driver, UVCVIDEO driver, and Wireless kernel module as a result of a usb conflict. please correct me if you disagree. Thanks.

For Grant B,

I cannot agree with your conclusion,

because I don't use flgrx driver and usb wireless card and have the same problem.

I think this is a bug with uvcvideo how it handles usb devices.

I have the same problem on my desktop with a SYBA SY-CAM63012 usb webcam. I am able to use the webcam with skype after plugging it in, but it stops working at some point and can not be restarted without powering off the entire machine. Soft reboot (restart) does not clear the problem.

I suspect that the usb controller chip on the motherboard shuts down one or more usb ports, and requires a complete power cycle to reset it's internal logic. I will have to test this further.

Acer Veriton M410. AMD Athlon 64 X2 Dual Core Processor 5000+. ATi Radeon HD 4350.
Ubuntu 10.04 LTS, kernel 2.6.32-27-generic-pae (32 bit), xorg radeon driver (NOT flgrx).

This is the dmesg line that indicates the problem.
    ehci_hcd 0000:00:13.5: force halt; handhake f8248024 00004000 00000000 -> -110

Webcam is reported by lsusb as "0ac8:3420 Z-Star Microelectronics Corp." and skype says it is a "Venus USB2.0 Camera"

I think the list of things that are common between reports is more like
a) Motherboard with AMD SB600 southbridge
b) USB webcam using the uvcvideo driver
c) A USB wireless adapter (or possibly any other USB high speed device that's in active use - see below).
d) USB controller errors, cutting off access to all USB high speed devices including the webcam and wireless, when trying to ACCESS webcam. Connecting new USB devices may also fail.

Everyone also has 64-bit CPUs, but since they're the only kind used with this motherboard chipset that's not terribly surprising. There's also a lot of AMD/ATI graphics cards, but that seems most likely to be a coincidence.

I actually encountered this issue on Gentoo with "046d:0809 Logitech, Inc. Webcam Pro 9000" and a "2040:7070 Hauppauge Nova-T Stick 3" and found this bug report when Googling for solutions, so it's neither Ubuntu-specific nor just restricted to USB wireless adapters.

I also have the same problem with TOSHIBA Satellite A210 PSAFGC-MS408C it crashes when I load cheese in linux ubuntu 9.04 to 10.04 and it crashes the wifi usb built-in totally and only an hard reboot makes the wifi works again but will crash if anything uses webcam and wifi at the same time and doesn't happen on the 2.6.28.0 kernel but anything above that will crash.

this bug is still happen on new kernels and is very similar bug to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/435352 this is the most annoying bug i ever found and no one seem to be fixing this bug

Possible workaround found that fixes the crashing problem with the ehci_hcd driver what i did was rmmod ehci_hcd as root then modprobe -a ehci_hcd and the wifi reconnected and the webcam work many times no crashes and all other apps work no problem i think it an timing problem with the ehci_hcd driver is my guess.

Thanks, errorfinder99, but the modprobe -a ehci_hcd isn't working for me:

(interestingly, the webcam works the FIRST TIME I use it after a kernel upgrade(? - seems this way), but then crashes everytime.)

Apr 3 08:07:33 mirror kernel: [ 237.391694] ehci_hcd 0000:00:13.5: force halt; handshake f8024424 00004000 00000000 -> -110
Apr 3 08:07:34 mirror kernel: [ 238.292217] hub 1-0:1.0: cannot reset port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292233] hub 1-0:1.0: cannot reset port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292241] hub 1-0:1.0: cannot reset port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292249] hub 1-0:1.0: cannot reset port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292256] hub 1-0:1.0: cannot reset port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292263] hub 1-0:1.0: Cannot enable port 5. Maybe the USB cable is bad?
Apr 3 08:07:34 mirror kernel: [ 238.292272] hub 1-0:1.0: cannot disable port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292282] hub 1-0:1.0: cannot reset port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292290] hub 1-0:1.0: cannot reset port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292298] hub 1-0:1.0: cannot reset port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292305] hub 1-0:1.0: cannot reset port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292313] hub 1-0:1.0: cannot reset port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292320] hub 1-0:1.0: Cannot enable port 5. Maybe the USB cable is bad?
Apr 3 08:07:34 mirror kernel: [ 238.292328] hub 1-0:1.0: cannot disable port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292336] hub 1-0:1.0: cannot reset port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292343] hub 1-0:1.0: cannot reset port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292351] hub 1-0:1.0: cannot reset port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292358] hub 1-0:1.0: cannot reset port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292365] hub 1-0:1.0: cannot reset port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292372] hub 1-0:1.0: Cannot enable port 5. Maybe the USB cable is bad?
Apr 3 08:07:34 mirror kernel: [ 238.292380] hub 1-0:1.0: cannot disable port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292388] hub 1-0:1.0: cannot reset port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292396] hub 1-0:1.0: cannot reset port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292403] hub 1-0:1.0: cannot reset port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292410] hub 1-0:1.0: cannot reset port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292418] hub 1-0:1.0: cannot reset port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292423] hub 1-0:1.0: Cannot enable port 5. Maybe the USB cable is bad?
Apr 3 08:07:34 mirror kernel: [ 238.292431] hub 1-0:1.0: cannot disable port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292441] hub 1-0:1.0: cannot disable port 5 (err = -108)
Apr 3 08:07:34 mirror kernel: [ 238.292493] hub 1-0:1.0: hub_port_status failed (err = -108)
Apr 3 08:07:36 mirror ...

here is what happen when i did modprobe -a ehci_hcd (the dmesg output) on kernel Linux ctkarch 2.6.35-ARCH #1 SMP PREEMPT Sat Oct 30 19:57:05 UTC 2010 i686 AMD Athlon(tm) 64 X2 Dual-Core Processor TK-55 AuthenticAMD GNU/Linux and the output of cat /sys/devices/pci0000:00/0000:00:13.5/class 0x0c0320

well after testing pclinuxos 2011 on 2.6.38.8-pclos1.bfs found that bug is still there and what more i did dmesg and got this message "Loading kernel module for a network device with CAP_SYS_MODULE (deprecated). Use CAP_NET_ADMIN and alias netdev-wlan0 instead" and my wifi crashes after that and fix my wifi by doing rmmod ehci_hcd and then modprobe -a ehci_hcd then wifi card of mine is rtl8187B using modprobe -a rtl8187 and my wifi works fine again unless i try using my webcam then the bug comes back
laptop
TOSHIBA A210 PSAFGC-MS408C
uname-a
Linux localhost.localdomain 2.6.38.8-pclos1.bfs #1 SMP PREEMPT Sat Jun 4 04:13:21 CDT 2011 i686 i686 i386 GNU/Linux

lsusb

 001 Device 003: ID 0bda:8197 Realtek Semiconductor Corp. RTL8187B Wireless Adapter
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 004: ID 04f2:b008 Chicony Electronics Co., Ltd USB 2.0 Camera
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 003: ID 046d:c045 Logitech, Inc. Optical Mouse
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

lspci

00:00.0 Host bridge: ATI Technologies Inc RS690 Host Bridge
00:01.0 PCI bridge: ATI Technologies Inc RS690 PCI to PCI Bridge (Internal gfx)
00:04.0 PCI bridge: ATI Technologies Inc Device 7914
00:05.0 PCI bridge: ATI Technologies Inc RS690 PCI to PCI Bridge (PCI Express Port 1)
00:06.0 PCI bridge: ATI Technologies Inc RS690 PCI to PCI Bridge (PCI Express Port 2)
00:12.0 SATA controller: ATI Technologies Inc SB600 Non-Raid-5 SATA
00:13.0 USB Controller: ATI Technologies Inc SB600 USB (OHCI0)
00:13.1 USB Controller: ATI Technologies Inc SB600 USB (OHCI1)
00:13.2 USB Controller: ATI Technologies Inc SB600 USB (OHCI2)
00:13.3 USB Controller: ATI Technologies Inc SB600 USB (OHCI3)
00:13.4 USB Controller: ATI Technologies Inc SB600 USB (OHCI4)
00:13.5 USB Controller: ATI Technologies Inc SB600 USB Controller (EHCI)
00:14.0 SMBus: ATI Technologies Inc SBx00 SMBus Controller (rev 14)
00:14.1 IDE interface: ATI Technologies Inc SB600 IDE
00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA)
00:14.3 ISA bridge: ATI Technologies Inc SB600 PCI to LPC Bridge
00:14.4 PCI bridge: ATI Technologies Inc SBx00 PCI to PCI Bridge
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
01:05.0 VGA compatible controller: ATI Technologies Inc RS690M [Radeon X1200 Series]
08:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 01)
14:06.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 05)
14:06.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22)
14:06.2 Syste...

found an bit of solution disable uvcvideo and blacklist it and use Logitech webcam and my wifi doesn't crash anymore and my Logitech webcam works fine
lsusb
Bus 002 Device 004: ID 0bda:8197 Realtek Semiconductor Corp. RTL8187B Wireless Adapter
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 005: ID 04f2:b008 Chicony Electronics Co., Ltd USB 2.0 Camera
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 009: ID 046d:c045 Logitech, Inc. Optical Mouse
Bus 001 Device 010: ID 046d:0870 Logitech, Inc. QuickCam Express
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
current dmesg
ehci_hcd 0000:00:13.5: remove, state 0
usb usb2: USB disconnect, address 1
ehci_hcd 0000:00:13.5: dma_pool_destroy ehci_qtd, ecaff000 busy
ehci_hcd 0000:00:13.5: dma_pool_destroy ehci_qh, eca43000 busy
ehci_hcd 0000:00:13.5: USB bus 2 deregistered
ehci_hcd 0000:00:13.5: PCI INT D disabled
usb 4-2: new full speed USB device using ohci_hcd and address 2
usb 4-2: New USB device found, idVendor=0bda, idProduct=8197
usb 4-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 4-2: Manufacturer: Manufacturer_Realtek
usb 4-2: SerialNumber: 00e04c000001
ieee80211 phy1: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy1: hwaddr 00:16:44:1e:25:92, RTL8187BvE V0 + rtl8225z2, rfkill mask 2
rtl8187: Customer ID is 0x04
Registered led device: rtl8187-phy1::radio
Registered led device: rtl8187-phy1::tx
Registered led device: rtl8187-phy1::rx
rtl8187: wireless switch is on
usb 5-2: new full speed USB device using ohci_hcd and address 2
usb 5-2: New USB device found, idVendor=04f2, idProduct=b008
usb 5-2: New USB device strings: Mfr=2, Product=1, SerialNumber=3
usb 5-2: Product: Chicony USB 2.0 Camera
usb 5-2: Manufacturer: Chicony Electronics Co., Ltd.
usb 5-2: SerialNumber: SN0001
uvcvideo: Found UVC 1.00 device Chicony USB 2.0 Camera (04f2:b008)
input: Chicony USB 2.0 Camera as /devices/pci0000:00/0000:00:13.3/usb5/5-2/5-2:1.0/input/input10
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
Warning! ehci_hcd should always be loaded before uhci_hcd and ohci_hcd, not after
ehci_hcd 0000:00:13.5: power state changed by ACPI to D0
ehci_hcd 0000:00:13.5: power state changed by ACPI to D0
ehci_hcd 0000:00:13.5: PCI INT D -> GSI 19 (level, low) -> IRQ 19
ehci_hcd 0000:00:13.5: EHCI Host Controller
ehci_hcd 0000:00:13.5: new USB bus registered, assigned bus number 2
ehci_hcd 0000:00:13.5: applying AMD SB600/SB700 USB freeze workaround
ehci_hcd 0000:00:13.5: debug port 1
ehci_hcd 0000:00:13.5: irq 19, io mem 0xf8609400
usb 4-2: USB disconnect, address 2
ehci_hcd 0000:00:13.5: USB 2.0 started, EHCI 1.00
usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb2: Product: EHCI Host Controller
usb usb2: Manufacturer: Linux 2.6.38.8-pclos1.bfs ehci_hcd
usb usb2: SerialNumber: 0000:00:13.5
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 10 ports de...

Greetings.

Apparently, some guys found the real cause of the error, which seems to be a hardware issue. Here I post the link:

http://www.spinics.net/lists/linux-media/msg11277.html

But the thread is no longer updated since 2009, and seems that nobody took care of the problem.

They (Canonical) can't take care of the problem if it's a hardware issue. Buggy hardware is not unheard of, but it's unfortunately the worst case scenario because in order to fix the problem the hardware either has to be recalled and replaced with non-sucky hardware OR a software fix has to be made for a particular kind of broken hardware. The problem with the latter solution is that it will often create more problems than it solves.

Beware of cheap computers. Ours was a low-end model for just 350 euros (and naturally, too good to be true).

Andrea Modinos, thank you for reporting this and helping make Ubuntu better. This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux <replace-with-bug-number>

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

Distributor ID: Ubuntu
Description: Ubuntu 12.04 LTS
Release: 12.04
Codename: precise

[10423.334911] ehci_hcd 0000:00:12.2: force halt; handshake ffffc90000648024 00004000 00000000 -> -110
[10423.334916] ehci_hcd 0000:00:12.2: HC died; cleaning up

Status changed to 'Confirmed' because the bug affects multiple users.

dmk, could you please file a new report by executing the following in a terminal:
ubuntu-bug linux

For more on this, please see https://help.ubuntu.com/community/ReportingBugs#Bug_Reporting_Etiquette . If you do file a new report, please feel free to subscribe me to it. Thank you for your understanding.

Helpful Bug Reporting Links:
https://help.ubuntu.com/community/ReportingBugs#A3._Make_sure_the_bug_hasn.27t_already_been_reported
https://help.ubuntu.com/community/ReportingBugs#Adding_Apport_Debug_Information_to_an_Existing_Launchpad_Bug
https://help.ubuntu.com/community/ReportingBugs#Adding_Additional_Attachments_to_an_Existing_Launchpad_Bug

well i can still recreate this bug on xubuntu 12.04 i ran cheese and then my wifi killed itself so the bug has never been fixed here my bug report had to save it offline using this: ubuntu-bug linux --save 554263

errorfinder99, could you please file a new report by executing the following in a terminal:
ubuntu-bug linux

For more on this, please see the Ubuntu Bug Control and Ubuntu Bug Squad article:
https://wiki.ubuntu.com/Bugs/BestPractices#X.2BAC8-Reporting.Focus_on_One_Issue

and Ubuntu Community article:
https://help.ubuntu.com/community/ReportingBugs#Bug_Reporting_Etiquette

When opening up the new report, please feel free to subscribe me to it. Thank you for your understanding.

Helpful Bug Reporting Links:
https://help.ubuntu.com/community/ReportingBugs#A3._Make_sure_the_bug_hasn.27t_already_been_reported
https://help.ubuntu.com/community/ReportingBugs#Adding_Apport_Debug_Information_to_an_Existing_Launchpad_Bug
https://help.ubuntu.com/community/ReportingBugs#Adding_Additional_Attachments_to_an_Existing_Launchpad_Bug

i did already right here https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1043580

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

I can confirm this problem still exists in ubuntu 12.04 and 12.10. Trying to open /dev/video0 forces ehci_hcd to halt. The wireless does not work any more and external usb devices are not recognised either.

Nikos Skalkotos, if you have a bug in Ubuntu, could you please file a new report by executing the following in a terminal:
ubuntu-bug linux

For more on this, please see the Ubuntu Bug Control and Ubuntu Bug Squad article:
https://wiki.ubuntu.com/Bugs/BestPractices#X.2BAC8-Reporting.Focus_on_One_Issue

and Ubuntu Community article:
https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette

When opening up the new report, please feel free to subscribe me to it.

Please note, not filing a new report may delay your problem being addressed as quickly as possible.

Thank you for your understanding.