Hi,
I have a webcam that appears to work in Guvcview but not in Cheese or Skype. If anyone could shed some light on what I'm doing wrong here that would be great!
Thanks,
AD
Code:dave@gigabyte:~$ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=18.04 DISTRIB_CODENAME=bionic DISTRIB_DESCRIPTION="Ubuntu 18.04.4 LTS"Code:dave@gigabyte:~$ lsusb Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 046d:0929 Logitech, Inc. Labtec Webcam Pro Bus 001 Device 003: ID 045e:0040 Microsoft Corp. Wheel Mouse Optical Bus 001 Device 002: ID 0a81:0101 Chesen Electronics Corp. Keyboard Bus 001 Device 005: ID 058f:9254 Alcor Micro Corp. Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hubCode:dave@gigabyte:~$ lsmod Module Size Used by cmac 16384 1 arc4 16384 0 md4 16384 0 nls_utf8 16384 4 cifs 737280 5 ccm 20480 0 fscache 65536 1 cifs pci_stub 16384 1 vboxpci 24576 0 vboxnetadp 28672 0 vboxnetflt 28672 0 vboxdrv 471040 3 vboxpci,vboxnetadp,vboxnetflt intel_rapl 20480 0 x86_pkg_temp_thermal 16384 0 intel_powerclamp 16384 0 coretemp 16384 0 kvm_intel 217088 0 snd_hda_codec_hdmi 49152 1 snd_hda_codec_realtek 106496 1 kvm 614400 1 kvm_intel snd_hda_codec_generic 73728 1 snd_hda_codec_realtek irqbypass 16384 1 kvm snd_hda_intel 45056 6 gspca_spca561 20480 0 crct10dif_pclmul 16384 0 snd_hda_codec 126976 4 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek gspca_main 36864 1 gspca_spca561 crc32_pclmul 16384 0 v4l2_common 16384 1 gspca_main videodev 184320 3 gspca_main,v4l2_common,gspca_spca561 snd_hda_core 81920 5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek ghash_clmulni_intel 16384 0 media 40960 1 videodev pcbc 16384 0 input_leds 16384 0 aesni_intel 188416 1 snd_hwdep 20480 1 snd_hda_codec aes_x86_64 20480 1 aesni_intel crypto_simd 16384 1 aesni_intel snd_pcm 98304 4 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_core snd_seq_midi 16384 0 snd_seq_midi_event 16384 1 snd_seq_midi snd_rawmidi 32768 1 snd_seq_midi glue_helper 16384 1 aesni_intel snd_seq 65536 2 snd_seq_midi,snd_seq_midi_event snd_seq_device 16384 3 snd_seq,snd_seq_midi,snd_rawmidi snd_timer 32768 2 snd_seq,snd_pcm cryptd 24576 3 crypto_simd,ghash_clmulni_intel,aesni_intel snd 81920 23 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_pcm,snd_rawmidi soundcore 16384 1 snd intel_cstate 20480 0 intel_rapl_perf 16384 0 intel_wmi_thunderbolt 16384 0 mei_me 40960 0 mei 94208 1 mei_me shpchp 36864 0 acpi_pad 180224 0 mac_hid 16384 0 sch_fq_codel 20480 2 parport_pc 32768 1 ppdev 20480 0 lp 20480 0 parport 49152 3 parport_pc,lp,ppdev ip_tables 28672 0 x_tables 40960 1 ip_tables autofs4 40960 2 hid_generic 16384 0 usbhid 49152 0 hid 118784 2 usbhid,hid_generic mxm_wmi 16384 0 i915 1622016 24 i2c_algo_bit 16384 1 i915 drm_kms_helper 172032 1 i915 syscopyarea 16384 1 drm_kms_helper sysfillrect 16384 1 drm_kms_helper sysimgblt 16384 1 drm_kms_helper e1000e 249856 0 fb_sys_fops 16384 1 drm_kms_helper ptp 20480 1 e1000e pps_core 20480 1 ptp drm 401408 16 drm_kms_helper,i915 ahci 40960 1 libahci 32768 1 ahci wmi 24576 2 intel_wmi_thunderbolt,mxm_wmi video 45056 1 i915Code:dave@gigabyte:~$ ls -ltr /dev/video* crw-rw----+ 1 root video 81, 0 Jul 11 13:16 /dev/video0Code:root@gigabyte:/var/log# find /usr/lib -iname '*v4l*' /usr/lib/i386-linux-gnu/libv4lconvert.so.0 /usr/lib/i386-linux-gnu/libv4l2.so.0.0.0 /usr/lib/i386-linux-gnu/libv4l2.so.0 /usr/lib/i386-linux-gnu/libv4lconvert0 /usr/lib/i386-linux-gnu/libv4l1.so.0.0.0 /usr/lib/i386-linux-gnu/libv4lconvert.so.0.0.0 /usr/lib/i386-linux-gnu/libv4l /usr/lib/i386-linux-gnu/libv4l/v4l2convert.so /usr/lib/i386-linux-gnu/libv4l/v4l1compat.so /usr/lib/i386-linux-gnu/libv4l/plugins/libv4l-mplane.so /usr/lib/i386-linux-gnu/libv4l1.so.0 /usr/lib/rpm/platform/armv4l-linux /usr/lib/x86_64-linux-gnu/libv4lconvert.so.0 /usr/lib/x86_64-linux-gnu/libv4l2.so.0.0.0 /usr/lib/x86_64-linux-gnu/libv4l2.so.0 /usr/lib/x86_64-linux-gnu/libv4lconvert0 /usr/lib/x86_64-linux-gnu/libv4l1.so.0.0.0 /usr/lib/x86_64-linux-gnu/libv4lconvert.so.0.0.0 /usr/lib/x86_64-linux-gnu/libv4l /usr/lib/x86_64-linux-gnu/libv4l/v4l2convert.so /usr/lib/x86_64-linux-gnu/libv4l/v4l1compat.so /usr/lib/x86_64-linux-gnu/libv4l/plugins/libv4l-mplane.so /usr/lib/x86_64-linux-gnu/libv4l1.so.0Code:root@gigabyte:/var/log# v4l2ucp X Error: BadAccess (attempt to access private resource denied) 10 Extension: 130 (MIT-SHM) Minor opcode: 1 (X_ShmAttach) Resource id: 0x139 X Error: BadShmSeg (invalid shared segment parameter) 128 Extension: 130 (MIT-SHM) Minor opcode: 5 (X_ShmCreatePixmap) Resource id: 0x4a0000f X Error: BadDrawable (invalid Pixmap or Window parameter) 9 Major opcode: 62 (X_CopyArea) Resource id: 0x4a00010 X Error: BadDrawable (invalid Pixmap or Window parameter) 9 Major opcode: 62 (X_CopyArea) Resource id: 0x4a00010# Works OK - as in there is an image if blurry low resolutionCode:root@gigabyte:/var/log# guvcview GUVCVIEW: version 2.0.5 GUVCVIEW: couldn't open /home/dave/.config/guvcview2/video0 for read: No such file or directory V4L2_CORE: (UVCIOC_CTRL_MAP) Error: Inappropriate ioctl for device V4L2_CORE: (UVCIOC_CTRL_MAP) Error: Inappropriate ioctl for device V4L2_CORE: (UVCIOC_CTRL_MAP) Error: Inappropriate ioctl for device V4L2_CORE: (UVCIOC_CTRL_MAP) Error: Inappropriate ioctl for device V4L2_CORE: (UVCIOC_CTRL_MAP) Error: Inappropriate ioctl for device V4L2_CORE: (UVCIOC_CTRL_MAP) Error: Inappropriate ioctl for device V4L2_CORE: (UVCIOC_CTRL_MAP) Error: Inappropriate ioctl for device V4L2_CORE: (UVCIOC_CTRL_MAP) Error: Inappropriate ioctl for device V4L2_CORE: (UVCIOC_CTRL_MAP) Error: Inappropriate ioctl for device V4L2_CORE: failed to subscribe events for control 0x0098090c: Invalid argument V4L2_CORE: failed to subscribe events for control 0x00980910: Invalid argument V4L2_CORE: failed to subscribe events for control 0x00980912: Invalid argument V4L2_CORE: failed to subscribe events for control 0x00980914: Invalid argument V4L2_CORE: failed to subscribe events for control 0x00980915: Invalid argument V4L2_CORE: failed to subscribe events for control 0x00982000: Invalid argument ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map Cannot connect to server socket err = No such file or directory Cannot connect to server request channel jack server is not running or cannot be started JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock V4L2_CORE: V4L2_CAP_TIMEPERFRAME not supported control[0]:(unknown - 0x6) 0x980001 'User Controls' V4L2_CORE: V4L2_CAP_TIMEPERFRAME not supported V4L2_CORE: V4L2_CAP_TIMEPERFRAME not supported V4L2_CORE: V4L2_CAP_TIMEPERFRAME not supported V4L2_CORE: V4L2_CAP_TIMEPERFRAME not supported V4L2_CORE: V4L2_CAP_TIMEPERFRAME not supported V4L2_CORE: V4L2_CAP_TIMEPERFRAME not supported
Code:root@gigabyte:/etc/modprobe.d# v4l2-ctl --list-devices Camera (usb-0000:00:14.0-9): /dev/video0# So V4L seems to be happy enoughCode:root@gigabyte:/etc/modprobe.d# v4l2-ctl -d /dev/video0 --list-ctrls User Controls brightness 0x00980900 (int) : min=-128 max=127 step=1 default=0 value=0 flags=slider hue 0x00980903 (int) : min=1 max=127 step=1 default=64 value=64 flags=slider exposure 0x00980911 (int) : min=1 max=2372 step=1 default=700 value=597 gain 0x00980913 (int) : min=0 max=255 step=1 default=63 value=63
# Skype versionCode:Jul 11 12:00:32 gigabyte cheese[6092]: cheese-application.vala:211: Error during camera setup: No device found Jul 11 12:00:32 gigabyte cheese[6092]: cheese_camera_device_get_name: assertion 'CHEESE_IS_CAMERA_DEVICE (device)' failed
# The resolution is very lowCode:dave@gigabyte:~$ cat /usr/share/skypeforlinux/version v2.0.8
# Any other data that lsusb will dump...Code:root@gigabyte:~# v4l2-ctl --list-formats-ext ioctl: VIDIOC_ENUM_FMT Index : 0 Type : Video Capture Pixel Format: 'S561' (compressed) Name : GSPCA SPCA561 Size: Discrete 320x240 Size: Discrete 352x288 Index : 1 Type : Video Capture Pixel Format: 'GBRG' Name : 8-bit Bayer GBGB/RGRG Size: Discrete 160x120 Size: Discrete 176x144
Code:root@gigabyte:~# lsusb -s 001:004 -v Bus 001 Device 004: ID 046d:0929 Logitech, Inc. Labtec Webcam Pro Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 1.10 bDeviceClass 255 Vendor Specific Class bDeviceSubClass 255 Vendor Specific Subclass bDeviceProtocol 0 bMaxPacketSize0 8 idVendor 0x046d Logitech, Inc. idProduct 0x0929 Labtec Webcam Pro bcdDevice 0.00 iManufacturer 1 iProduct 2 Camera iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 233 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 (Bus Powered) MaxPower 100mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0000 1x 0 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0080 1x 128 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 2 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0370 1x 880 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 3 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 4 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0280 1x 640 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 5 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0300 1x 768 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 6 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0380 1x 896 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 7 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x03ff 1x 1023 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 8 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0220 1x 544 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 9 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0290 1x 656 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 10 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x02c0 1x 704 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 11 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0360 1x 864 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 12 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x03c0 1x 960 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 13 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x034d 1x 845 bytes bInterval 1 Device Status: 0x0000 (Bus Powered)
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