我无法让几个不同的网络摄像头在 CentOS 6.6 上运行。（Logitech C270 和 Creative Live！Cam Sync HD）
我认为它与 udev 有关，但不确定。以下是我的/var/log/Xorg.0.log和/var/log/messages。它认为它是键盘吗？
/var/log/Xorg.0.log（插入和移除两个摄像头）
[ 772.788] (II) config/hal: Adding input device Live! Cam Sync HD VF0770
[ 772.788] (II) Using input driver 'evdev' for 'Live! Cam Sync HD VF0770'
[ 772.788] (**) Live! Cam Sync HD VF0770: always reports core events
[ 772.788] (**) evdev: Live! Cam Sync HD VF0770: Device: "/dev/input/event19"
[ 772.796] (--) evdev: Live! Cam Sync HD VF0770: Vendor 0x41e Product 0x4095
[ 772.796] (--) evdev: Live! Cam Sync HD VF0770: Found keys
[ 772.796] (II) evdev: Live! Cam Sync HD VF0770: Configuring as keyboard
[ 772.796] (**) Option "config_info" "hal:/org/freedesktop/Hal/devices/usb_device_41e_4095_2014062000244_if0_logicaldev_input"
[ 772.796] (II) XINPUT: Adding extended input device "Live! Cam Sync HD VF0770" (type: KEYBOARD, id 12)
[ 772.796] (**) Option "xkb_rules" "evdev"
[ 772.796] (**) Option "xkb_model" "pc105+inet"
[ 772.796] (**) Option "xkb_layout" "us"
[ 772.796] (WW) Option "xkb_variant" requires a string value
[ 772.796] (**) Option "xkb_options" "terminate:ctrl_alt_bksp"
[ 777.733] (II) config/hal: removing device Live! Cam Sync HD VF0770
[ 777.740] (II) evdev: Live! Cam Sync HD VF0770: Close
[ 777.740] (II) UnloadModule: "evdev"
###########################################
[ 817.391] (II) config/hal: Adding input device UVC Camera (046d:0825)
[ 817.391] (II) Using input driver 'evdev' for 'UVC Camera (046d:0825)'
[ 817.391] (**) UVC Camera (046d:0825): always reports core events
[ 817.391] (**) evdev: UVC Camera (046d:0825): Device: "/dev/input/event19"
[ 817.399] (--) evdev: UVC Camera (046d:0825): Vendor 0x46d Product 0x825
[ 817.399] (--) evdev: UVC Camera (046d:0825): Found keys
[ 817.399] (II) evdev: UVC Camera (046d:0825): Configuring as keyboard
[ 817.399] (**) Option "config_info" "hal:/org/freedesktop/Hal/devices/usb_device_46d_825_226045A0_if0_logicaldev_input"
[ 817.399] (II) XINPUT: Adding extended input device "UVC Camera (046d:0825)" (type: KEYBOARD, id 12)
[ 817.399] (**) Option "xkb_rules" "evdev"
[ 817.399] (**) Option "xkb_model" "pc105+inet"
[ 817.399] (**) Option "xkb_layout" "us"
[ 817.399] (WW) Option "xkb_variant" requires a string value
[ 817.399] (**) Option "xkb_options" "terminate:ctrl_alt_bksp"
[ 828.720] (II) config/hal: removing device UVC Camera (046d:0825)
[ 828.727] (II) evdev: UVC Camera (046d:0825): Close
[ 828.727] (II) UnloadModule: "evdev"
/var/log/Xorg.0.log（插入和移除两个摄像头）
Jan 24 15:37:02 machina kernel: usb 2-5: new high speed USB device number 9 using ehci_hcd
Jan 24 15:37:02 machina kernel: usb 2-5: New USB device found, idVendor=041e, idProduct=4095
Jan 24 15:37:02 machina kernel: usb 2-5: New USB device strings: Mfr=3, Product=1, SerialNumber=2
Jan 24 15:37:02 machina kernel: usb 2-5: Product: Live! Cam Sync HD VF0770
Jan 24 15:37:02 machina kernel: usb 2-5: Manufacturer: Creative Technology Ltd.
Jan 24 15:37:02 machina kernel: usb 2-5: SerialNumber: 2014062000244
Jan 24 15:37:02 machina kernel: usb 2-5: configuration #1 chosen from 1 choice
Jan 24 15:37:02 machina kernel: uvcvideo: Found UVC 1.00 device Live! Cam Sync HD VF0770 (041e:4095)
Jan 24 15:37:02 machina kernel: input: Live! Cam Sync HD VF0770 as /devices/pci0000:00/0000:00:1d.7/usb2/2-5/2-5:1.0/input/input27
Jan 24 15:37:02 machina rtkit-daemon[4500]: Sucessfully made thread 8825 of process 4790 (/usr/bin/pulseaudio) owned by '1003' RT at priority 5.
Jan 24 15:37:20 machina kernel: usb 2-5: USB disconnect, device number 9
###########################################
Jan 24 15:38:11 machina kernel: usb 2-5: new high speed USB device number 10 using ehci_hcd
Jan 24 15:38:11 machina kernel: usb 2-5: New USB device found, idVendor=046d, idProduct=0825
Jan 24 15:38:11 machina kernel: usb 2-5: New USB device strings: Mfr=0, Product=0, SerialNumber=2
Jan 24 15:38:11 machina kernel: usb 2-5: SerialNumber: 226045A0
Jan 24 15:38:11 machina kernel: usb 2-5: configuration #1 chosen from 1 choice
Jan 24 15:38:11 machina kernel: uvcvideo: Found UVC 1.00 device <unnamed> (046d:0825)
Jan 24 15:38:11 machina kernel: input: UVC Camera (046d:0825) as /devices/pci0000:00/0000:00:1d.7/usb2/2-5/2-5:1.0/input/input28
Jan 24 15:38:12 machina kernel: 10:3:2: cannot set freq 24000 to ep 0x86
Jan 24 15:38:13 machina rtkit-daemon[4500]: Sucessfully made thread 9026 of process 4790 (/usr/bin/pulseaudio) owned by '1003' RT at priority 5.
Jan 24 15:38:26 machina kernel: usb 2-5: USB disconnect, device number 10
请帮忙！我遗漏了什么？
插入后 dmesg|tail 的输出
usb 2-6: new high speed USB device number 14 using ehci_hcd
usb 2-6: New USB device found, idVendor=046d, idProduct=0825
usb 2-6: New USB device strings: Mfr=0, Product=0, SerialNumber=2
usb 2-6: SerialNumber: 226045A0
usb 2-6: configuration #1 chosen from 1 choice
uvcvideo: Found UVC 1.00 device <unnamed> (046d:0825)
uvcvideo: Forcing device quirks to 0x80 by module parameter for testing purpose.
uvcvideo: Please report required quirks to the linux-uvc-devel mailing list.
input: UVC Camera (046d:0825) as /devices/pci0000:00/0000:00:1d.7/usb2/2-6/2-6:1.0/input/input37
14:3:1: cannot set freq 16000 to ep 0x86
奶酪产量
libv4lconvert: warning more framesizes then I can handle!
libv4lconvert: warning more framesizes then I can handle!
libv4l2: error turning on stream: No space left on device
ucview 的输出
libv4lconvert: warning more framesizes then I can handle!
libv4lconvert: warning more framesizes then I can handle!
libv4lconvert: warning more framesizes then I can handle!
libv4lconvert: warning more framesizes then I can handle!
libv4lconvert: warning more framesizes then I can handle!
libv4lconvert: warning more framesizes then I can handle!
** (ucview:2199): WARNING **: Failed to set property: White Balance Temperature
** (ucview:2199): WARNING **: Failed to set property: Exposure (Absolute)
libv4lconvert: warning more framesizes then I can handle!
libv4lconvert: warning more framesizes then I can handle!
libv4lconvert: warning more framesizes then I can handle!
libv4lconvert: warning more framesizes then I can handle!
(ucview:2199): GConf-CRITICAL **: gconf_client_set_string: assertion `val != NULL' failed
search module path: /home/rmoggach/.ucview/plugins
search module path: /usr/lib64/ucview/plugins
libv4l2: error turning on stream: No space left on device
** (ucview:2199): WARNING **: Failed to start video capture
camorama 的输出
libv4lconvert: warning more framesizes then I can handle!
libv4lconvert: warning more framesizes then I can handle!
(camorama:3381): Gtk-WARNING **: GtkSpinButton: setting an adjustment with non-zero page size is deprecated
libv4l2: error turning on stream: No space left on device
libv4l2: error reading: Invalid argument
重启后 dmesg 的输出（连接摄像头）
重启后机器非常慢，X 也乱了。拔掉电源即可解决缓慢问题。
usb 2-2: reset high speed USB device number 2 using ehci_hcd
snd-usb-audio 2-2:1.2: no reset_resume for driver snd-usb-audio?
snd-usb-audio 2-2:1.3: no reset_resume for driver snd-usb-audio?
2:3:4: cannot set freq 48000 to ep 0x86
2:3:4: cannot set freq 48000 to ep 0x86
2:3:4: cannot set freq 48000 to ep 0x86
2:3:4: cannot set freq 48000 to ep 0x86
2:3:4: cannot set freq 48000 to ep 0x86
2:3:4: cannot set freq 48000 to ep 0x86
2:3:4: cannot set freq 48000 to ep 0x86
2:3:4: cannot set freq 48000 to ep 0x86
2:3:4: cannot set freq 48000 to ep 0x86
2:3:4: cannot set freq 48000 to ep 0x86
2:3:4: cannot set freq 48000 to ep 0x86
2:3:4: cannot set freq 48000 to ep 0x86
2:3:4: cannot set freq 48000 to ep 0x86
2:3:4: cannot set freq 48000 to ep 0x86
2:3:4: cannot set freq 48000 to ep 0x86
2:3:4: cannot set freq 48000 to ep 0x86
2:3:4: cannot set freq 48000 to ep 0x86
2:3:4: cannot set freq 48000 to ep 0x86
2:3:4: cannot set freq 48000 to ep 0x86
答案1
这是 CentOS 6.6 中网络摄像头的一个已知错误，并向 Red Hat 报告为 Bugzilla #1158988。
在 plus 内核中已经修复：
答案2
根据 mogga 引用的 CentOS 错误报告 7815，该错误已在后续内核中修复（自 2.6.32-504.1.3.el6 起）。如果您尚未修复，则应将内核更新为最新的 CentOS-6 内核。这应该可以解决问题。