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Message #33660
[Bug 1259670] Re: v4l2 does not support Dazzle Fusion Model DVC-80 Rev 1 + system freeze
kernel-bug-exists-upstream
uname -a
Linux yoda 3.12.4-031204-generic #201312081207 SMP Sun Dec 8 17:08:59 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
There is not system freeze, but the driver becomes unusable once the usb
cable is unplugged.
relevant kern.log
Dec 10 23:22:31 yoda kernel: [ 65.979908] usb 2-1: USB disconnect, device number 2
Dec 10 23:22:32 yoda kernel: [ 65.980151] usbvision_disconnect: In use, disconnect pending
Dec 10 23:22:32 yoda kernel: [ 65.980168] BUG: unable to handle kernel NULL pointer dereference at (null)
Dec 10 23:22:32 yoda kernel: [ 65.981072] IP: [<ffffffff81095c0a>] __wake_up_common+0x2a/0x90
Dec 10 23:22:32 yoda kernel: [ 65.981711] PGD 0
Dec 10 23:22:32 yoda kernel: [ 65.981914] Oops: 0000 [#1] SMP
Dec 10 23:22:32 yoda kernel: [ 65.982250] Modules linked in: saa7115 usbvision v4l2_common joydev snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep parport_pc snd_pcm rfcomm ppdev bnep snd_seq_midi arc4 asus_nb_wmi snd_rawmidi asus_wmi ath9k sparse_keymap snd_seq_midi_event snd_seq snd_timer uvcvideo mac80211 snd_seq_device ath3k btusb videobuf2_core asix usbnet bluetooth videodev rts5139(C) psmouse ath9k_common ath9k_hw videobuf2_vmalloc mii videobuf2_memops serio_raw ath snd soundcore snd_page_alloc mac_hid cfg80211 mei_me mei lpc_ich coretemp lp parport i915 wmi drm_kms_helper drm i2c_algo_bit video ahci libahci
Dec 10 23:22:32 yoda kernel: [ 65.988219] CPU: 3 PID: 67 Comm: khubd Tainted: G C 3.12.4-031204-generic #201312081207
Dec 10 23:22:32 yoda kernel: [ 65.989193] Hardware name: ASUSTeK Computer Inc. UX31E/UX31E, BIOS UX31E.211 01/20/2012
Dec 10 23:22:32 yoda kernel: [ 65.990092] task: ffff880138feaf60 ti: ffff880138a6a000 task.ti: ffff880138a6a000
Dec 10 23:22:32 yoda kernel: [ 65.990891] RIP: 0010:[<ffffffff81095c0a>] [<ffffffff81095c0a>] __wake_up_common+0x2a/0x90
Dec 10 23:22:32 yoda kernel: [ 65.991791] RSP: 0018:ffff880138a6bae8 EFLAGS: 00010096
Dec 10 23:22:32 yoda kernel: [ 65.992355] RAX: 0000000000000282 RBX: ffff8800b1e235b0 RCX: 0000000000000000
Dec 10 23:22:32 yoda kernel: [ 65.993138] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8800b1e235b0
Dec 10 23:22:32 yoda kernel: [ 65.993950] RBP: ffff880138a6bb28 R08: 0000000000000000 R09: 0000000000000000
Dec 10 23:22:32 yoda kernel: [ 65.994711] R10: 0000000000000397 R11: 0000000000000396 R12: 0000000000000282
Dec 10 23:22:32 yoda kernel: [ 65.995472] R13: ffff8800b1e235b8 R14: 0000000000000000 R15: 0000000000000000
Dec 10 23:22:32 yoda kernel: [ 65.996232] FS: 0000000000000000(0000) GS:ffff88013f460000(0000) knlGS:0000000000000000
Dec 10 23:22:32 yoda kernel: [ 65.997096] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Dec 10 23:22:32 yoda kernel: [ 65.997705] CR2: 0000000000000000 CR3: 0000000001c0d000 CR4: 00000000000407e0
Dec 10 23:22:32 yoda kernel: [ 65.998465] Stack:
Dec 10 23:22:32 yoda kernel: [ 65.998667] ffff8800b1e234b8 0000000100000001 ffffffffa05ce1e8 ffff8800b1e235b0
Dec 10 23:22:32 yoda kernel: [ 65.999459] 0000000000000282 0000000000000001 0000000000000001 0000000000000000
Dec 10 23:22:32 yoda kernel: [ 66.000277] ffff880138a6bb68 ffffffff81096c28 ffff8800b1e23000 ffff8800b1e23000
Dec 10 23:22:32 yoda kernel: [ 66.001102] Call Trace:
Dec 10 23:22:32 yoda kernel: [ 66.001367] [<ffffffff81096c28>] __wake_up+0x48/0x70
Dec 10 23:22:32 yoda kernel: [ 66.001928] [<ffffffffa05c6621>] usbvision_disconnect+0x131/0x150 [usbvision]
Dec 10 23:22:32 yoda kernel: [ 66.002718] [<ffffffff81565bd0>] usb_unbind_interface+0x60/0x1b0
Dec 10 23:22:32 yoda kernel: [ 66.003369] [<ffffffff814ad63f>] __device_release_driver+0x7f/0xf0
Dec 10 23:22:32 yoda kernel: [ 66.004038] [<ffffffff814ad6dc>] device_release_driver+0x2c/0x40
Dec 10 23:22:32 yoda kernel: [ 66.004688] [<ffffffff814acfe4>] bus_remove_device+0x104/0x170
Dec 10 23:22:32 yoda kernel: [ 66.005318] [<ffffffff814a9f56>] device_del+0x126/0x1b0
Dec 10 23:22:32 yoda kernel: [ 66.005882] [<ffffffff815633e0>] usb_disable_device+0xb0/0x280
Dec 10 23:22:32 yoda kernel: [ 66.006512] [<ffffffff81558452>] usb_disconnect+0xb2/0x210
Dec 10 23:22:32 yoda kernel: [ 66.007124] [<ffffffff8156281a>] ? usb_control_msg+0xea/0x110
Dec 10 23:22:32 yoda kernel: [ 66.007772] [<ffffffff8155acaf>] hub_port_connect_change+0xcf/0x9c0
Dec 10 23:22:32 yoda kernel: [ 66.008469] [<ffffffff8156281a>] ? usb_control_msg+0xea/0x110
Dec 10 23:22:32 yoda kernel: [ 66.009107] [<ffffffff8155b8c8>] hub_events+0x328/0x870
Dec 10 23:22:32 yoda kernel: [ 66.009695] [<ffffffff810a13bd>] ? vtime_common_task_switch+0x3d/0x50
Dec 10 23:22:32 yoda kernel: [ 66.010419] [<ffffffff8155be45>] hub_thread+0x35/0x160
Dec 10 23:22:32 yoda kernel: [ 66.011010] [<ffffffff8108d380>] ? add_wait_queue+0x60/0x60
Dec 10 23:22:32 yoda kernel: [ 66.011611] [<ffffffff8155be10>] ? hub_events+0x870/0x870
Dec 10 23:22:32 yoda kernel: [ 66.012194] [<ffffffff8108c820>] kthread+0xc0/0xd0
Dec 10 23:22:32 yoda kernel: [ 66.012711] [<ffffffff8108c760>] ? flush_kthread_worker+0xb0/0xb0
Dec 10 23:22:32 yoda kernel: [ 66.013395] [<ffffffff81759a7c>] ret_from_fork+0x7c/0xb0
Dec 10 23:22:32 yoda kernel: [ 66.044742] [<ffffffff8108c760>] ? flush_kthread_worker+0xb0/0xb0
Dec 10 23:22:32 yoda kernel: [ 66.076765] Code: 00 66 66 66 66 90 55 48 89 e5 41 57 41 89 cf 41 56 4d 89 c6 41 55 4c 8d 6f 08 41 54 53 48 83 ec 18 89 55 c8 48 8b 57 08 89 75 cc <48> 8b 1a 48 8d 42 e8 48 83 eb 18 49 39 d5 75 0c eb 3d 0f 1f 40
Dec 10 23:22:32 yoda kernel: [ 66.142538] RIP [<ffffffff81095c0a>] __wake_up_common+0x2a/0x90
Dec 10 23:22:32 yoda kernel: [ 66.175156] RSP <ffff880138a6bae8>
Dec 10 23:22:32 yoda kernel: [ 66.205440] CR2: 0000000000000000
Dec 10 23:22:32 yoda kernel: [ 66.436678] ---[ end trace b5d4927cb7bffbb2 ]---
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1259670
Title:
v4l2 does not support Dazzle Fusion Model DVC-80 Rev 1 + system freeze
Status in “linux” package in Ubuntu:
Confirmed
Bug description:
This might be linked to #302728.
This is what dmesg says when plugging in the usb :
Dec 10 20:32:44 yoda kernel: [ 35.596781] usb 2-1: new full-speed USB device number 2 using xhci_hcd
Dec 10 20:32:45 yoda kernel: [ 35.674118] usbvision_probe: Dazzle Fusion Model DVC-80 Rev 1 (PAL) found
Dec 10 20:32:45 yoda kernel: [ 35.674173] USBVision[0]: registered USBVision Video device video1 [v4l2]
Dec 10 20:32:45 yoda kernel: [ 35.674183] usbvision_probe: Dazzle Fusion Model DVC-80 Rev 1 (PAL) found
Dec 10 20:32:45 yoda kernel: [ 35.674217] USBVision[1]: registered USBVision Video device video2 [v4l2]
Dec 10 20:32:45 yoda kernel: [ 35.674234] usbcore: registered new interface driver usbvision
Dec 10 20:32:45 yoda kernel: [ 35.674235] USBVision USB Video Device Driver for Linux : 0.9.11
Dec 10 20:32:45 yoda kernel: [ 35.751463] saa7115 16-0025: saa7113 found (1f7113d01f00030) @ 0x4a (usbvision-2-1)
Dec 10 20:32:45 yoda kernel: [ 35.784408] xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD
Dec 10 20:32:45 yoda kernel: [ 35.786815] usb 2-1: usbvision_read_reg: failed: error -108
Dec 10 20:32:45 yoda kernel: [ 36.039249] usb 2-1: usbvision_read_reg: failed: error -110
Dec 10 20:32:45 yoda kernel: [ 36.294568] usb 2-1: usbvision_write_reg: failed: error -110
Dec 10 20:32:45 yoda kernel: [ 36.294572] usbvision_set_audio: can't write iopin register for audio switching
Dec 10 20:32:45 yoda kernel: [ 36.550582] usb 2-1: usbvision_write_reg: failed: error -110
Dec 10 20:32:45 yoda kernel: [ 36.550585] usbvision_audio_off: can't write reg
Dec 10 20:32:46 yoda kernel: [ 36.806405] usb 2-1: usbvision_write_reg: failed: error -110
Dec 10 20:32:46 yoda kernel: [ 36.820242] usb 2-1: selecting invalid altsetting 1
Dec 10 20:32:46 yoda kernel: [ 36.820245] usb 2-1: cannot change alternate number to 1 (error=-22)
When unplugging I have a system freeze with 3.2.0-57-generic. I was
using 3.4.0 with no system freeze when unplugging but I had to reboot
into 3.2.0 to make this bug report as requested by ubuntu-bug.
I'm trying to use the following command line to capture the output :
mplayer tv:// -tv driver=v4l2:norm=PAL:audiorate=44100:immediatemode=0:forceaudio:alsa:adevice=hw.0,0:device=/dev/video1:input=1 -vf pp=lb
And this is what I get :
----------------------------------------------------------------------------------------------------------------------------------
MPlayer svn r34540 (Ubuntu), built with gcc-4.6 (C) 2000-2012 MPlayer Team
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.
Playing tv://.
TV file format detected.
Selected driver: v4l2
name: Video 4 Linux 2 input
author: Martin Olschewski <olschewski@xxxxxxxxxxxxxxxx>
comment: first try, more to come ;-)
Selected device: Dazzle Fusion Model DVC-80 Rev
Capabilities: video capture audio read/write streaming
supported norms: 0 = NTSC; 1 = NTSC-M; 2 = NTSC-M-JP; 3 = NTSC-M-KR; 4 = PAL; 5 = PAL-BG; 6 = PAL-H; 7 = PAL-I; 8 = PAL-DK; 9 = PAL-M; 10 = SECAM; 11 = SECAM-B; 12 = SECAM-G; 13 = SECAM-H; 14 = SECAM-DK; 15 = SECAM-L; 16 = SECAM-Lc;
inputs: 0 = Composite Video Input; 1 = S-Video Input;
Current input: 0
Current format: RGB24
Selected input hasn't got a tuner!
Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory
[vdpau] Error when calling vdp_device_create_x11: 1
Opening video filter: [pp=lb]
==========================================================================
Opening video decoder: [raw] RAW Uncompressed Video
[PP] Using external postprocessing filter, max q = 6.
Movie-Aspect is undefined - no prescaling applied.
VO: [xv] 320x240 => 320x240 Planar YV12
Selected video codec: [rawyv12] vfm: raw (RAW YV12)
==========================================================================
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 44100 Hz, 2 ch, s16le, 1411.2 kbit/100.00% (ratio: 176400->176400)
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
==========================================================================
AO: [pulse] 44100Hz 2ch s16le (2 bytes per sample)
Starting playback...
A: 0.1 V: 0.0 A-V: 0.108 ct: 0.000 1/ 1 ??% ??% ??,?% 0 0 ^[[J^M
Frame too small! (57600<115200) Wrong format?
[...]
Finally, here's the crash dump for the kernel
Dec 10 20:31:46 yoda kernel: [ 309.742292] Modules linked in: snd_hda_codec_hdmi snd_hda_codec_realtek joydev saa7115 asus_nb_wmi asus_wmi sparse_keymap rts5139(C) rfcomm parport_pc ppdev snd_hda_intel snd_hda_codec bnep snd_hwdep asix usbnet snd_pcm uvcvideo usbvision arc4 ath3k v4l2_common videodev v4l2_compat_ioctl32 btusb bluetooth psmouse snd_seq_midi serio_raw ath9k mac80211 ath9k_common ath9k_hw ath cfg80211 snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd soundcore snd_page_alloc mei(C) mac_hid coretemp lp parport wmi i915 drm_kms_helper drm i2c_algo_bit video
Dec 10 20:31:46 yoda kernel: [ 309.743322]
Dec 10 20:31:46 yoda kernel: [ 309.743355] Pid: 31, comm: khubd Tainted: G C 3.2.0-57-generic #87-Ubuntu ASUSTeK Computer Inc. UX31E/UX31E
Dec 10 20:31:46 yoda kernel: [ 309.743547] RIP: 0010:[<ffffffff8104d4ba>] [<ffffffff8104d4ba>] __wake_up_common+0x2a/0x90
Dec 10 20:31:46 yoda kernel: [ 309.743705] RSP: 0018:ffff8801354cdb40 EFLAGS: 00010082
Dec 10 20:31:46 yoda kernel: [ 309.743798] RAX: 0000000000000282 RBX: ffff88013356c568 RCX: 0000000000000000
Dec 10 20:31:46 yoda kernel: [ 309.743901] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88013356c568
Dec 10 20:31:46 yoda kernel: [ 309.743971] RBP: ffff8801354cdb80 R08: 0000000000000000 R09: 0000000000000000
Dec 10 20:31:46 yoda kernel: [ 309.744041] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000282
Dec 10 20:31:46 yoda kernel: [ 309.744111] R13: ffff88013356c570 R14: 0000000000000000 R15: 0000000000000000
Dec 10 20:31:46 yoda kernel: [ 309.744182] FS: 0000000000000000(0000) GS:ffff88013f400000(0000) knlGS:0000000000000000
Dec 10 20:31:46 yoda kernel: [ 309.744262] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
Dec 10 20:31:46 yoda kernel: [ 309.744319] CR2: 0000000000000000 CR3: 0000000001c05000 CR4: 00000000000406f0
Dec 10 20:31:46 yoda kernel: [ 309.744389] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Dec 10 20:31:46 yoda kernel: [ 309.744460] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Dec 10 20:31:46 yoda kernel: [ 309.744532] Process khubd (pid: 31, threadinfo ffff8801354cc000, task ffff8801354a1700)
Dec 10 20:31:46 yoda kernel: [ 309.744609] Stack:
Dec 10 20:31:46 yoda kernel: [ 309.744630] ffff88013356c478 0000000100000001 ffff8801354cdb60 ffff88013356c568
Dec 10 20:31:46 yoda kernel: [ 309.744713] 0000000000000282 0000000000000001 0000000000000001 0000000000000000
Dec 10 20:31:46 yoda kernel: [ 309.744793] ffff8801354cdbc0 ffffffff8104f158 ffff88013356c000 ffff88013356c000
Dec 10 20:31:46 yoda kernel: [ 309.744874] Call Trace:
Dec 10 20:31:46 yoda kernel: [ 309.744908] [<ffffffff8104f158>] __wake_up+0x48/0x70
Dec 10 20:31:46 yoda kernel: [ 309.744973] [<ffffffffa03730b2>] usbvision_disconnect+0xec/0x136 [usbvision]
Dec 10 20:31:46 yoda kernel: [ 309.745051] [<ffffffff8149d122>] usb_unbind_interface+0x52/0x180
Dec 10 20:31:46 yoda kernel: [ 309.745118] [<ffffffff813f9a0c>] __device_release_driver+0x7c/0xe0
Dec 10 20:31:46 yoda kernel: [ 309.745183] [<ffffffff813f9a9c>] device_release_driver+0x2c/0x40
Dec 10 20:31:46 yoda kernel: [ 309.745247] [<ffffffff813f9548>] bus_remove_device+0x78/0xb0
Dec 10 20:31:46 yoda kernel: [ 309.745306] [<ffffffff813f6afd>] device_del+0x12d/0x1b0
Dec 10 20:31:46 yoda kernel: [ 309.745363] [<ffffffff8149ad0f>] usb_disable_device+0xaf/0x1f0
Dec 10 20:31:46 yoda kernel: [ 309.745426] [<ffffffff81493974>] usb_disconnect+0x84/0x120
Dec 10 20:31:46 yoda kernel: [ 309.745485] [<ffffffff81494860>] hub_port_connect_change+0xa0/0x6e0
Dec 10 20:31:46 yoda kernel: [ 309.745552] [<ffffffff8149a247>] ? usb_control_msg+0xf7/0x120
Dec 10 20:31:46 yoda kernel: [ 309.749870] [<ffffffff81495063>] hub_events+0x1c3/0x680
Dec 10 20:31:46 yoda kernel: [ 309.753103] [<ffffffff8165efdc>] ? __schedule+0x3cc/0x6f0
Dec 10 20:31:46 yoda kernel: [ 309.756314] [<ffffffff81495555>] hub_thread+0x35/0x180
Dec 10 20:31:46 yoda kernel: [ 309.759511] [<ffffffff8108c0f0>] ? add_wait_queue+0x60/0x60
Dec 10 20:31:46 yoda kernel: [ 309.762697] [<ffffffff81495520>] ? hub_events+0x680/0x680
Dec 10 20:31:46 yoda kernel: [ 309.765863] [<ffffffff8108b64c>] kthread+0x8c/0xa0
Dec 10 20:31:46 yoda kernel: [ 309.769019] [<ffffffff8166bcf4>] kernel_thread_helper+0x4/0x10
Dec 10 20:31:46 yoda kernel: [ 309.772140] [<ffffffff8108b5c0>] ? flush_kthread_worker+0xa0/0xa0
Dec 10 20:31:46 yoda kernel: [ 309.775251] [<ffffffff8166bcf0>] ? gs_change+0x13/0x13
Dec 10 20:31:46 yoda kernel: [ 309.778639] Code: 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 18 66 66 66 66 90 89 55 c8 48 8b 57 08 4c 8d 6f 08 89 75 cc 41 89 cf 4d 89 c6 <48> 8b 1a 48 8d 42 e8 48 83 eb 18 49 39 d5 75 0c eb 3d 0f 1f 40
Dec 10 20:31:46 yoda kernel: [ 309.785567] RIP [<ffffffff8104d4ba>] __wake_up_common+0x2a/0x90
Dec 10 20:31:46 yoda kernel: [ 309.789018] RSP <ffff8801354cdb40>
Dec 10 20:31:46 yoda kernel: [ 309.792428] CR2: 0000000000000000
Dec 10 20:31:46 yoda kernel: [ 309.866838] ---[ end trace a9953439f0b42f2b ]---
Tx for helping
David
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-57-generic 3.2.0-57.87
ProcVersionSignature: Ubuntu 3.2.0-57.87-generic 3.2.52
Uname: Linux 3.2.0-57-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC269VB Analog [ALC269VB Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: david 1796 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'PCH'/'HDA Intel PCH at 0xdfe00000 irq 53'
Mixer name : 'Intel CougarPoint HDMI'
Components : 'HDA:10ec0269,10431427,00100100 HDA:80862805,80860101,00100000'
Controls : 22
Simple ctrls : 10
Date: Tue Dec 10 20:33:06 2013
HibernationDevice: RESUME=UUID=01ef14ff-17dc-4465-859c-f7fd9586d6ef
InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120423)
MachineType: ASUSTeK Computer Inc. UX31E
MarkForUpload: True
ProcEnviron:
LANGUAGE=fr_FR:
TERM=xterm
PATH=(custom, no user)
LANG=fr_FR.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-57-generic root=UUID=b67d1098-ef5a-4c35-abaa-68a075d33bce ro quiet splash pcie_aspm=force drm.vblankoffdelay=1 i915.semaphores=1 vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.2.0-57-generic N/A
linux-backports-modules-3.2.0-57-generic N/A
linux-firmware 1.79.9
SourcePackage: linux
StagingDrivers: rts5139 mei
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/20/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: UX31E.211
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: UX31E
dmi.board.vendor: ASUSTeK Computer Inc.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer Inc.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX31E.211:bd01/20/2012:svnASUSTeKComputerInc.:pnUX31E:pvr1.0:rvnASUSTeKComputerInc.:rnUX31E:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
dmi.product.name: UX31E
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK Computer Inc.
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References
