当我使用使用网络摄像头的应用程序（cheese、skype）时，它工作正常。但如果我稍微移动笔记本电脑的屏幕，它就会停止显示。应用程序重新启动后，网络摄像头再次工作。
我有 Ubuntu 14.04 LTS 64 和联想 Thinkpad Edge E130。
dmesg这是我使用奶酪稍微移动笔记本电脑后的输出。
[ 3155.738215] usb 3-4: USB disconnect, device number 15
[ 3155.776773] ------------[ cut here ]------------
[ 3155.776802] WARNING: CPU: 1 PID: 3385 at /build/linux-gorft9/linux-3.13.0/fs/sysfs/group.c:214 sysfs_remove_group+0xc6/0xd0()
[ 3155.776808] sysfs group ffffffff81cac4e0 not found for kobject 'event12'
[ 3155.776812] Modules linked in: cuse rfcomm bnep binfmt_misc nls_iso8859_1 uvcvideo btusb videobuf2_vmalloc videobuf2_memops videobuf2_core bluetooth videodev wl(POX) intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul i915 snd_hda_codec_hdmi snd_hda_codec_realtek cryptd snd_hda_intel drm_kms_helper cfg80211 snd_hda_codec drm joydev serio_raw snd_hwdep snd_pcm thinkpad_acpi rtsx_pci_ms lpc_ich memstick mei_me i2c_algo_bit snd_page_alloc wmi shpchp nvram snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq mei snd_seq_device snd_timer snd soundcore video mac_hid parport_pc ppdev lp parport hid_generic usbhid hid rtsx_pci_sdmmc r8169 mii psmouse ahci libahci rtsx_pci
[ 3155.776918] CPU: 1 PID: 3385 Comm: cheese Tainted: P W OX 3.13.0-87-generic #133-Ubuntu
[ 3155.776922] Hardware name: LENOVO 33585GG/33585GG, BIOS H4ET67WW (2.06 ) 10/18/2012
[ 3155.776926] 0000000000000000 ffff880035479c18 ffffffff81729866 ffff880035479c60
[ 3155.776934] 0000000000000009 ffff880035479c50 ffffffff8106982d 0000000000000000
[ 3155.776941] ffffffff81cac4e0 ffff8800552d20c0 ffff88006c645248 ffff8801182ab060
[ 3155.776948] Call Trace:
[ 3155.776960] [<ffffffff81729866>] dump_stack+0x64/0x82
[ 3155.776969] [<ffffffff8106982d>] warn_slowpath_common+0x7d/0xa0
[ 3155.776975] [<ffffffff8106989c>] warn_slowpath_fmt+0x4c/0x50
[ 3155.776983] [<ffffffff81239a3e>] ? sysfs_get_dirent_ns+0x4e/0x70
[ 3155.776990] [<ffffffff8123ace6>] sysfs_remove_group+0xc6/0xd0
[ 3155.776999] [<ffffffff814a47a3>] dpm_sysfs_remove+0x43/0x50
[ 3155.777005] [<ffffffff8149a1d5>] device_del+0x45/0x1c0
[ 3155.777015] [<ffffffff81596ca3>] evdev_disconnect+0x23/0x60
[ 3155.777023] [<ffffffff815933f5>] __input_unregister_device+0xc5/0x1b0
[ 3155.777031] [<ffffffff8159358d>] input_unregister_device+0x4d/0x80
[ 3155.777043] [<ffffffffa0a44d32>] uvc_status_cleanup+0x42/0x50 [uvcvideo]
[ 3155.777052] [<ffffffffa0a3a1e8>] uvc_delete+0x18/0x140 [uvcvideo]
[ 3155.777060] [<ffffffffa0a3a40d>] uvc_release+0x2d/0x30 [uvcvideo]
[ 3155.777075] [<ffffffffa0a70789>] v4l2_device_release+0xb9/0xe0 [videodev]
[ 3155.777082] [<ffffffff81499802>] device_release+0x32/0xa0
[ 3155.777092] [<ffffffff8136c4b7>] kobject_cleanup+0x77/0x1b0
[ 3155.777099] [<ffffffff8136c358>] kobject_put+0x28/0x60
[ 3155.777105] [<ffffffff81499af7>] put_device+0x17/0x20
[ 3155.777117] [<ffffffffa0a6f44a>] v4l2_release+0x4a/0x80 [videodev]
[ 3155.777127] [<ffffffff811c2c64>] __fput+0xe4/0x260
[ 3155.777135] [<ffffffff811c2e2e>] ____fput+0xe/0x10
[ 3155.777142] [<ffffffff8108a9dc>] task_work_run+0xac/0xd0
[ 3155.777151] [<ffffffff81014e77>] do_notify_resume+0x97/0xb0
[ 3155.777160] [<ffffffff8173a69a>] int_signal+0x12/0x17
[ 3155.777165] ---[ end trace 3f9c80825ed62b4c ]---
[ 3155.788752] ------------[ cut here ]------------
[ 3155.788775] WARNING: CPU: 1 PID: 3385 at /build/linux-gorft9/linux-3.13.0/fs/sysfs/group.c:214 sysfs_remove_group+0xc6/0xd0()
[ 3155.788779] sysfs group ffffffff81cac4e0 not found for kobject 'input23'
[ 3155.788782] Modules linked in: cuse rfcomm bnep binfmt_misc nls_iso8859_1 uvcvideo btusb videobuf2_vmalloc videobuf2_memops videobuf2_core bluetooth videodev wl(POX) intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul i915 snd_hda_codec_hdmi snd_hda_codec_realtek cryptd snd_hda_intel drm_kms_helper cfg80211 snd_hda_codec drm joydev serio_raw snd_hwdep snd_pcm thinkpad_acpi rtsx_pci_ms lpc_ich memstick mei_me i2c_algo_bit snd_page_alloc wmi shpchp nvram snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq mei snd_seq_device snd_timer snd soundcore video mac_hid parport_pc ppdev lp parport hid_generic usbhid hid rtsx_pci_sdmmc r8169 mii psmouse ahci libahci rtsx_pci
[ 3155.788893] CPU: 1 PID: 3385 Comm: cheese Tainted: P W OX 3.13.0-87-generic #133-Ubuntu
[ 3155.788897] Hardware name: LENOVO 33585GG/33585GG, BIOS H4ET67WW (2.06 ) 10/18/2012
[ 3155.788901] 0000000000000000 ffff880035479c40 ffffffff81729866 ffff880035479c88
[ 3155.788909] 0000000000000009 ffff880035479c78 ffffffff8106982d 0000000000000000
[ 3155.788916] ffffffff81cac4e0 ffff88006c645258 ffff880055143430 ffff8801182ab060
[ 3155.788923] Call Trace:
[ 3155.788936] [<ffffffff81729866>] dump_stack+0x64/0x82
[ 3155.788946] [<ffffffff8106982d>] warn_slowpath_common+0x7d/0xa0
[ 3155.788952] [<ffffffff8106989c>] warn_slowpath_fmt+0x4c/0x50
[ 3155.788960] [<ffffffff81239a3e>] ? sysfs_get_dirent_ns+0x4e/0x70
[ 3155.788967] [<ffffffff8123ace6>] sysfs_remove_group+0xc6/0xd0
[ 3155.788976] [<ffffffff814a47a3>] dpm_sysfs_remove+0x43/0x50
[ 3155.788983] [<ffffffff8149a1d5>] device_del+0x45/0x1c0
[ 3155.788993] [<ffffffff81593483>] __input_unregister_device+0x153/0x1b0
[ 3155.789000] [<ffffffff8159358d>] input_unregister_device+0x4d/0x80
[ 3155.789013] [<ffffffffa0a44d32>] uvc_status_cleanup+0x42/0x50 [uvcvideo]
[ 3155.789021] [<ffffffffa0a3a1e8>] uvc_delete+0x18/0x140 [uvcvideo]
[ 3155.789030] [<ffffffffa0a3a40d>] uvc_release+0x2d/0x30 [uvcvideo]
[ 3155.789045] [<ffffffffa0a70789>] v4l2_device_release+0xb9/0xe0 [videodev]
[ 3155.789052] [<ffffffff81499802>] device_release+0x32/0xa0
[ 3155.789062] [<ffffffff8136c4b7>] kobject_cleanup+0x77/0x1b0
[ 3155.789070] [<ffffffff8136c358>] kobject_put+0x28/0x60
[ 3155.789075] [<ffffffff81499af7>] put_device+0x17/0x20
[ 3155.789088] [<ffffffffa0a6f44a>] v4l2_release+0x4a/0x80 [videodev]
[ 3155.789097] [<ffffffff811c2c64>] __fput+0xe4/0x260
[ 3155.789106] [<ffffffff811c2e2e>] ____fput+0xe/0x10
[ 3155.789112] [<ffffffff8108a9dc>] task_work_run+0xac/0xd0
[ 3155.789122] [<ffffffff81014e77>] do_notify_resume+0x97/0xb0
[ 3155.789131] [<ffffffff8173a69a>] int_signal+0x12/0x17
[ 3155.789136] ---[ end trace 3f9c80825ed62b4d ]---
[ 3155.789154] ------------[ cut here ]------------
[ 3155.789162] WARNING: CPU: 1 PID: 3385 at /build/linux-gorft9/linux-3.13.0/fs/sysfs/group.c:214 sysfs_remove_group+0xc6/0xd0()
[ 3155.789166] sysfs group ffffffff81cd0d00 not found for kobject 'input23'
[ 3155.789168] Modules linked in: cuse rfcomm bnep binfmt_misc nls_iso8859_1 uvcvideo btusb videobuf2_vmalloc videobuf2_memops videobuf2_core bluetooth videodev wl(POX) intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul i915 snd_hda_codec_hdmi snd_hda_codec_realtek cryptd snd_hda_intel drm_kms_helper cfg80211 snd_hda_codec drm joydev serio_raw snd_hwdep snd_pcm thinkpad_acpi rtsx_pci_ms lpc_ich memstick mei_me i2c_algo_bit snd_page_alloc wmi shpchp nvram snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq mei snd_seq_device snd_timer snd soundcore video mac_hid parport_pc ppdev lp parport hid_generic usbhid hid rtsx_pci_sdmmc r8169 mii psmouse ahci libahci rtsx_pci
[ 3155.789252] CPU: 1 PID: 3385 Comm: cheese Tainted: P W OX 3.13.0-87-generic #133-Ubuntu
[ 3155.789255] Hardware name: LENOVO 33585GG/33585GG, BIOS H4ET67WW (2.06 ) 10/18/2012
[ 3155.789258] 0000000000000000 ffff880035479c00 ffffffff81729866 ffff880035479c48
[ 3155.789265] 0000000000000009 ffff880035479c38 ffffffff8106982d 0000000000000000
[ 3155.789271] ffffffff81cd0d00 ffff88006c645258 ffffffff81cd0b00 ffff8801182ab060
[ 3155.789278] Call Trace:
[ 3155.789285] [<ffffffff81729866>] dump_stack+0x64/0x82
[ 3155.789291] [<ffffffff8106982d>] warn_slowpath_common+0x7d/0xa0
[ 3155.789298] [<ffffffff8106989c>] warn_slowpath_fmt+0x4c/0x50
[ 3155.789305] [<ffffffff81239a3e>] ? sysfs_get_dirent_ns+0x4e/0x70
[ 3155.789311] [<ffffffff8123ace6>] sysfs_remove_group+0xc6/0xd0
[ 3155.789318] [<ffffffff8123adc3>] sysfs_remove_groups+0x33/0x50
[ 3155.789328] [<ffffffff8149973e>] device_remove_attrs+0x5e/0x80
[ 3155.789334] [<ffffffff8149a2b1>] device_del+0x121/0x1c0
[ 3155.789343] [<ffffffff81593483>] __input_unregister_device+0x153/0x1b0
[ 3155.789350] [<ffffffff8159358d>] input_unregister_device+0x4d/0x80
[ 3155.789360] [<ffffffffa0a44d32>] uvc_status_cleanup+0x42/0x50 [uvcvideo]
[ 3155.789368] [<ffffffffa0a3a1e8>] uvc_delete+0x18/0x140 [uvcvideo]
[ 3155.789376] [<ffffffffa0a3a40d>] uvc_release+0x2d/0x30 [uvcvideo]
[ 3155.789389] [<ffffffffa0a70789>] v4l2_device_release+0xb9/0xe0 [videodev]
[ 3155.789395] [<ffffffff81499802>] device_release+0x32/0xa0
[ 3155.789403] [<ffffffff8136c4b7>] kobject_cleanup+0x77/0x1b0
[ 3155.789410] [<ffffffff8136c358>] kobject_put+0x28/0x60
[ 3155.789416] [<ffffffff81499af7>] put_device+0x17/0x20
[ 3155.789428] [<ffffffffa0a6f44a>] v4l2_release+0x4a/0x80 [videodev]
[ 3155.789436] [<ffffffff811c2c64>] __fput+0xe4/0x260
[ 3155.789445] [<ffffffff811c2e2e>] ____fput+0xe/0x10
[ 3155.789450] [<ffffffff8108a9dc>] task_work_run+0xac/0xd0
[ 3155.789458] [<ffffffff81014e77>] do_notify_resume+0x97/0xb0
[ 3155.789465] [<ffffffff8173a69a>] int_signal+0x12/0x17
[ 3155.789469] ---[ end trace 3f9c80825ed62b4e ]---
[ 3155.789473] ------------[ cut here ]------------
[ 3155.789479] WARNING: CPU: 1 PID: 3385 at /build/linux-gorft9/linux-3.13.0/fs/sysfs/group.c:214 sysfs_remove_group+0xc6/0xd0()
[ 3155.789483] sysfs group ffffffff81cd0b60 not found for kobject 'input23'
[ 3155.789485] Modules linked in: cuse rfcomm bnep binfmt_misc nls_iso8859_1 uvcvideo btusb videobuf2_vmalloc videobuf2_memops videobuf2_core bluetooth videodev wl(POX) intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul i915 snd_hda_codec_hdmi snd_hda_codec_realtek cryptd snd_hda_intel drm_kms_helper cfg80211 snd_hda_codec drm joydev serio_raw snd_hwdep snd_pcm thinkpad_acpi rtsx_pci_ms lpc_ich memstick mei_me i2c_algo_bit snd_page_alloc wmi shpchp nvram snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq mei snd_seq_device snd_timer snd soundcore video mac_hid parport_pc ppdev lp parport hid_generic usbhid hid rtsx_pci_sdmmc r8169 mii psmouse ahci libahci rtsx_pci
[ 3155.789568] CPU: 1 PID: 3385 Comm: cheese Tainted: P W OX 3.13.0-87-generic #133-Ubuntu
[ 3155.789571] Hardware name: LENOVO 33585GG/33585GG, BIOS H4ET67WW (2.06 ) 10/18/2012
[ 3155.789574] 0000000000000000 ffff880035479c00 ffffffff81729866 ffff880035479c48
[ 3155.789580] 0000000000000009 ffff880035479c38 ffffffff8106982d 0000000000000000
[ 3155.789586] ffffffff81cd0b60 ffff88006c645258 ffffffff81cd0b00 ffff8801182ab060
[ 3155.789593] Call Trace:
[ 3155.789599] [<ffffffff81729866>] dump_stack+0x64/0x82
[ 3155.789606] [<ffffffff8106982d>] warn_slowpath_common+0x7d/0xa0
[ 3155.789612] [<ffffffff8106989c>] warn_slowpath_fmt+0x4c/0x50
[ 3155.789619] [<ffffffff81239a3e>] ? sysfs_get_dirent_ns+0x4e/0x70
[ 3155.789625] [<ffffffff8123ace6>] sysfs_remove_group+0xc6/0xd0
[ 3155.789632] [<ffffffff8123adc3>] sysfs_remove_groups+0x33/0x50
[ 3155.789640] [<ffffffff8149973e>] device_remove_attrs+0x5e/0x80
[ 3155.789646] [<ffffffff8149a2b1>] device_del+0x121/0x1c0
[ 3155.789654] [<ffffffff81593483>] __input_unregister_device+0x153/0x1b0
[ 3155.789661] [<ffffffff8159358d>] input_unregister_device+0x4d/0x80
[ 3155.789671] [<ffffffffa0a44d32>] uvc_status_cleanup+0x42/0x50 [uvcvideo]
[ 3155.789679] [<ffffffffa0a3a1e8>] uvc_delete+0x18/0x140 [uvcvideo]
[ 3155.789687] [<ffffffffa0a3a40d>] uvc_release+0x2d/0x30 [uvcvideo]
[ 3155.789700] [<ffffffffa0a70789>] v4l2_device_release+0xb9/0xe0 [videodev]
[ 3155.789705] [<ffffffff81499802>] device_release+0x32/0xa0
[ 3155.789713] [<ffffffff8136c4b7>] kobject_cleanup+0x77/0x1b0
[ 3155.789720] [<ffffffff8136c358>] kobject_put+0x28/0x60
[ 3155.789725] [<ffffffff81499af7>] put_device+0x17/0x20
[ 3155.789738] [<ffffffffa0a6f44a>] v4l2_release+0x4a/0x80 [videodev]
[ 3155.789746] [<ffffffff811c2c64>] __fput+0xe4/0x260
[ 3155.789754] [<ffffffff811c2e2e>] ____fput+0xe/0x10
[ 3155.789759] [<ffffffff8108a9dc>] task_work_run+0xac/0xd0
[ 3155.789767] [<ffffffff81014e77>] do_notify_resume+0x97/0xb0
[ 3155.789774] [<ffffffff8173a69a>] int_signal+0x12/0x17
[ 3155.789778] ---[ end trace 3f9c80825ed62b4f ]---
[ 3156.017948] usb 3-4: new high-speed USB device number 16 using xhci_hcd
[ 3156.018042] usb 3-4: Device not responding to set address.
[ 3156.220683] usb 3-4: Device not responding to set address.
[ 3156.424568] usb 3-4: device not accepting address 16, error -71
[ 3156.720564] usb 3-4: new high-speed USB device number 18 using xhci_hcd
[ 3156.747870] usb 3-4: New USB device found, idVendor=04f2, idProduct=b2fe
[ 3156.747881] usb 3-4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 3156.747887] usb 3-4: Product: Integrated Camera
[ 3156.747892] usb 3-4: Manufacturer: Vimicro corp.
[ 3156.748576] uvcvideo: Found UVC 1.00 device Integrated Camera (04f2:b2fe)
[ 3156.749961] input: Integrated Camera as /devices/pci0000:00/0000:00:14.0/usb3/3-4/3-4:1.0/input/input24
该怎么办？我希望这不是硬件问题，因为只需重新启动应用程序而无需执行任何物理操作就会有所帮助。
答案1
这肯定是硬件问题，因为它告诉您相机已断开连接然后重新连接：
usb 3-4: USB disconnect, device number 15
...
usb 3-4: new high-speed USB device number 16 using xhci_hcd
摄像头是通过笔记本电脑内部的 USB 线连接的，但不知何故有点松动，因此，当您移动笔记本电脑时，它会短暂断开连接，然后重新连接，导致使用它的应用程序崩溃。一般的网络摄像头（尤其是内置笔记本电脑的网络摄像头）在使用时不设计为断开连接并重新连接，而且使用它们的应用程序（cheese）也没有为此提供支持。
无法通过任何软件更改来解决这个问题 - 您必须打开笔记本电脑并正确连接，或者如果内部带状电缆损坏，则更换它。