1
edit
Changes
→Troubleshooting
*** comment out the line "options vga2usb num_frame_buffers=2"
*** add the line "options vga2usb v4l_num_buffers=2" (note: v4l_num_buffers is from drvwrapper_lib.h)
===Troubleshooting===
After installing the device driver for vga2usb, plug in the USB cable connected to the VGA2USB device and you should see the following message pop up in the system log file /var/log/messages:
Oct 24 11:08:30 f13 kernel: usb 1-3: new high speed USB device using ehci_hcd and address 2
Oct 24 11:08:31 f13 kernel: usb 1-3: New USB device found, idVendor=5555, idProduct=1110
Oct 24 11:08:31 f13 kernel: usb 1-3: New USB device strings: Mfr=0, Product=0, SerialNumber=0
Oct 24 11:08:31 f13 kernel: Epiphan Systems frame grabber driver version 3.24.9.12 loaded
Oct 24 11:08:31 f13 kernel: VGA2USB is now attached to vga2usb-192
Oct 24 11:08:31 f13 kernel: usbcore: registered new interface driver vga2usb
Oct 24 11:08:31 f13 kernel: usb 1-3: USB disconnect, address 2
Oct 24 11:08:31 f13 kernel: vga2usb: Disconnect
Oct 24 11:08:32 f13 kernel: usb 1-3: new high speed USB device using ehci_hcd and address 3
Oct 24 11:08:32 f13 kernel: usb 1-3: New USB device found, idVendor=5555, idProduct=1110
Oct 24 11:08:32 f13 kernel: usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Oct 24 11:08:32 f13 kernel: usb 1-3: Product: VGA to USB
Oct 24 11:08:32 f13 kernel: usb 1-3: Manufacturer: Epiphan
Oct 24 11:08:32 f13 kernel: usb 1-3: SerialNumber: V2U68595
Oct 24 11:08:33 f13 kernel: VGA2USB is now attached to vga2usb-192
Connect the vga connector on the VGA2USB device to an VGA output and run the freeseer application, you should see the following debugging messages:
[rchan@f13 src]$ ./freeseer
Video directory exists.
2010-10-25 23:06:33 freeseer: <INFO> Logger initialized.
2010-10-25 23:06:33 freeseer: <DEBUG> Video output resolution changed to 800x600
2010-10-25 23:06:33 freeseer: <INFO> Core initialized
2010-10-25 23:06:33 freeseer: <DEBUG> Available video sources: ['desktop', 'usb', 'firewire']
2010-10-25 23:06:33 freeseer: <DEBUG> pulsesrc is available.
2010-10-25 23:06:33 freeseer: <DEBUG> alsasrc is available.
2010-10-25 23:06:33 freeseer: <DEBUG> Available audio sources: ['pulsesrc', 'alsasrc']
2010-10-25 23:06:33 freeseer: <DEBUG> Available talk titles:
2010-10-25 23:06:33 freeseer: <DEBUG> T103 - Thanh Ha - Intro to Freeseer
2010-10-25 23:06:33 freeseer: <INFO> Video Preview Activated
2010-10-25 23:06:33 freeseer: <DEBUG> Video source changed to desktop using
2010-10-25 23:06:33 freeseer: <DEBUG> loading pulsesrc
2010-10-25 23:06:33 freeseer: <DEBUG> pulsesrc loaded.
2010-10-25 23:07:07 freeseer: <DEBUG> Available video devices for usb: ['/dev/video0']
2010-10-25 23:07:07 freeseer: <DEBUG> Video source changed to usb using /dev/video0
freeseer directory exists.
2010-10-25 23:07:09 freeseer: <DEBUG> Video output resolution changed to 800x600
freeseer directory exists.
2010-10-25 23:07:11 freeseer: <DEBUG> Video output resolution changed to 800x600
2010-10-25 23:07:18 freeseer: <DEBUG> Set record name to 2010-10-25_-_2307_-_T103_-_Thanh_Ha_-_Intro_to_Freeseer.ogg
libv4l2: error getting capabilities: Unknown error 515
2010-10-25 23:07:18 freeseer: <INFO> Recording started
2010-10-25 23:07:18 freeseer: <DEBUG> Error: Could not get/set settings from/on resource.v4l2_calls.c(98): gst_v4l2_get_capabilities (): /GstPipeline:player/GstV4l2Src:vidsrc:
system error: Unknown error 515
2010-10-25 23:07:18 freeseer: <DEBUG> v4l2src failed, falling back to v4lsrc
2010-10-25 23:42:12 freeseer: <INFO> Recording stopped
2010-10-25 23:42:14 freeseer: <INFO> Exiting freeseer...
2010-10-25 23:42:14 freeseer: <INFO> Recording stopped
[rchan@f13 src]$
Please note that freeseer can't find v4l2src and fall back to v4lsrc. Why was it failing to use v4l2src?