Hi Amos, On Fri, Nov 25, 2022 at 03:11:22AM +0100, Amos Tibaldi wrote: > Hello, I blacklisted the snd_usb_audio and traced 0xffff uvcvideo.ko. The > problem has slightly changed. Now the frames are coming but are not shown, > as you can see from the syslog and dmesg below. Cheese, mpv, vlc, xawtv > show all black window > > tibaldi@ryzen:~/Desktop/src/svl2/SimpleV4L2-SimpleV4L2_v0.2.5/build$ xawtv > This is xawtv-3.106, running on Linux/x86_64 (5.4.212) > xinerama 0: 1920x1080+0+0 > vid-open-auto: using grabber/webcam device /dev/video0 > v4l2: oops: select timeout [snip] > [ 686.740627] uvcvideo: Probing generic UVC device 3 > [ 686.742123] uvcvideo: Found format MJPEG. > [ 686.742125] uvcvideo: - 1920x1080 (30.0 fps) > [ 686.742126] uvcvideo: - 640x480 (30.0 fps) > [ 686.742127] uvcvideo: - 800x600 (30.0 fps) > [ 686.742128] uvcvideo: - 1024x768 (30.0 fps) > [ 686.742129] uvcvideo: - 1280x720 (30.0 fps) > [ 686.742130] uvcvideo: - 1280x960 (30.0 fps) > [ 686.742130] uvcvideo: - 1280x1024 (30.0 fps) > [ 686.742131] uvcvideo: - 1360x768 (30.0 fps) > [ 686.742132] uvcvideo: - 1400x900 (30.0 fps) > [ 686.742133] uvcvideo: - 1440x900 (30.0 fps) > [ 686.742134] uvcvideo: Found format YUV 4:2:2 (YUYV). > [ 686.742135] uvcvideo: - 1920x1080 (30.0 fps) > [ 686.742135] uvcvideo: - 640x480 (30.0 fps) > [ 686.742136] uvcvideo: - 800x600 (30.0 fps) > [ 686.742137] uvcvideo: - 1024x768 (30.0 fps) > [ 686.742138] uvcvideo: - 1280x720 (30.0 fps) > [ 686.742139] uvcvideo: - 1280x960 (30.0 fps) > [ 686.742140] uvcvideo: - 1280x1024 (30.0 fps) > [ 686.742141] uvcvideo: - 1360x768 (30.0 fps) > [ 686.742141] uvcvideo: - 1400x900 (30.0 fps) > [ 686.742142] uvcvideo: - 1440x900 (30.0 fps) > [ 686.742146] uvcvideo: Found a Status endpoint (addr 87). > [ 686.742147] uvcvideo: Found UVC 1.00 device ezcap U3 capture (1bcf:2c99) > [ 686.742151] uvcvideo: Added control 00000000-0000-0000-0000-000000000101/2 to device 3 entity 2 > [ 686.743061] uvcvideo: Adding mapping 'Brightness' to control 00000000-0000-0000-0000-000000000101/2. > [ 686.743063] uvcvideo: Added control 00000000-0000-0000-0000-000000000101/3 to device 3 entity 2 > [ 686.744306] uvcvideo: Adding mapping 'Contrast' to control 00000000-0000-0000-0000-000000000101/3. > [ 686.744307] uvcvideo: Added control 00000000-0000-0000-0000-000000000101/6 to device 3 entity 2 > [ 686.745557] uvcvideo: Adding mapping 'Hue' to control 00000000-0000-0000-0000-000000000101/6. > [ 686.745558] uvcvideo: Added control 00000000-0000-0000-0000-000000000101/7 to device 3 entity 2 > [ 686.746808] uvcvideo: Adding mapping 'Saturation' to control 00000000-0000-0000-0000-000000000101/7. > [ 686.746811] uvcvideo: Scanning UVC chain: OT 5 <- XU 4 <- XU 3 <- PU 2 <- IT 1 > [ 686.746814] uvcvideo: Found a valid video chain (1 -> 5). > [ 686.759767] input: ezcap U3 capture: ezcap U3 capt as /devices/pci0000:00/0000:00:01.3/0000:02:00.0/usb2/2-3/2-3:1.0/input/input20 > [ 686.759814] uvcvideo: UVC device initialized. > [ 686.759856] usbcore: registered new interface driver uvcvideo > [ 686.759857] USB Video Class driver (1.1.1) > [ 688.950588] uvcvideo: Suspending interface 1 > [ 688.950591] uvcvideo: Suspending interface 0 > [ 693.066866] uvcvideo: uvc_v4l2_open > [ 693.164163] uvcvideo: Resuming interface 0 > [ 693.164164] uvcvideo: Resuming interface 1 > [ 693.164213] uvcvideo: uvc_v4l2_poll > [ 693.164216] uvcvideo: uvc_v4l2_read: not implemented. That's an ancient API that the uvcvideo driver doesn't support. xawtv is likely a bad test application. Let's start simply, could you run yavta -f YUYV -s 1920x1080 -c10 /dev/video0 and provide both the kernel log and the messages output by yavta ? > [ 693.164220] uvcvideo: uvc_v4l2_poll > [ 693.164221] uvcvideo: uvc_v4l2_read: not implemented. > [ 693.164234] uvcvideo: uvc_v4l2_poll > [ 693.164234] uvcvideo: uvc_v4l2_read: not implemented. > [ 693.164240] uvcvideo: uvc_v4l2_poll > [ 693.164241] uvcvideo: uvc_v4l2_read: not implemented. > [ 693.167317] uvcvideo: uvc_v4l2_poll > [ 693.167320] uvcvideo: uvc_v4l2_read: not implemented. > [ 693.167887] uvcvideo: uvc_v4l2_open > [ 693.167894] uvcvideo: uvc_ioctl_g_input 1 > [ 693.167895] uvcvideo: uvc_ioctl_enum_input 1 > [ 693.167903] uvcvideo: Trying format 0x32315559 (YU12): 1920x1080. > [ 693.167904] uvcvideo: Using default frame interval 33333.3 us (30.0 fps). > [ 693.181968] uvcvideo: Trying format 0x32315559 (YU12): 1920x1080. > [ 693.181970] uvcvideo: Using default frame interval 33333.3 us (30.0 fps). > [ 693.196719] uvcvideo: Trying format 0x32315659 (YV12): 1920x1080. > [ 693.196721] uvcvideo: Using default frame interval 33333.3 us (30.0 fps). > [ 693.210226] uvcvideo: Trying format 0x50323234 (422P): 1920x1080. > [ 693.210228] uvcvideo: Using default frame interval 33333.3 us (30.0 fps). > [ 693.224215] uvcvideo: Trying format 0x56595559 (YUYV): 1920x1080. > [ 693.224217] uvcvideo: Using default frame interval 33333.3 us (30.0 fps). > [ 693.237715] uvcvideo: uvc_ioctl_g_parm 1 > [ 693.251341] uvcvideo: uvc_v4l2_mmap > [ 693.251460] uvcvideo: uvc_v4l2_mmap > [ 693.251536] uvcvideo: uvc_v4l2_mmap > [ 693.251602] uvcvideo: uvc_v4l2_mmap > [ 693.251660] uvcvideo: uvc_v4l2_mmap > [ 693.251715] uvcvideo: uvc_v4l2_mmap > [ 693.251768] uvcvideo: uvc_v4l2_mmap > [ 693.251821] uvcvideo: uvc_v4l2_mmap > [ 693.251873] uvcvideo: uvc_v4l2_mmap > [ 693.251925] uvcvideo: uvc_v4l2_mmap > [ 693.251977] uvcvideo: uvc_v4l2_mmap > [ 693.252030] uvcvideo: uvc_v4l2_mmap > [ 693.252082] uvcvideo: uvc_v4l2_mmap > [ 693.252134] uvcvideo: uvc_v4l2_mmap > [ 693.252185] uvcvideo: uvc_v4l2_mmap > [ 693.252237] uvcvideo: uvc_v4l2_mmap > [ 693.252288] uvcvideo: uvc_v4l2_mmap > [ 693.252340] uvcvideo: uvc_v4l2_mmap > [ 693.252391] uvcvideo: uvc_v4l2_mmap > [ 693.252442] uvcvideo: uvc_v4l2_mmap > [ 693.252494] uvcvideo: uvc_v4l2_mmap > [ 693.252545] uvcvideo: uvc_v4l2_mmap > [ 693.252596] uvcvideo: uvc_v4l2_mmap > [ 693.252648] uvcvideo: uvc_v4l2_mmap > [ 693.252699] uvcvideo: uvc_v4l2_mmap > [ 693.252750] uvcvideo: uvc_v4l2_mmap > [ 693.252801] uvcvideo: uvc_v4l2_mmap > [ 693.252852] uvcvideo: uvc_v4l2_mmap > [ 693.252903] uvcvideo: uvc_v4l2_mmap > [ 693.252954] uvcvideo: uvc_v4l2_mmap > [ 693.253005] uvcvideo: uvc_v4l2_mmap > [ 693.253056] uvcvideo: uvc_v4l2_mmap > [ 693.253126] uvcvideo: uvc_ioctl_streamon 1 > [ 693.253126] uvcvideo: uvc_ioctl_streamon 2 > [ 693.255834] uvcvideo: Allocated 5 URB buffers of 16x1024 bytes each. > [ 693.528952] uvcvideo: Frame complete (EOF found). > [ 693.528953] uvcvideo: EOF in empty payload. > [ 693.530411] uvcvideo: frame 1 stats: 0/254/255 packets, 0/0/255 pts (!early initial), 253/255 scr, last pts/stc/sof 532789400/536923291/88 > [ 693.562281] uvcvideo: Frame complete (EOF found). > [ 693.562282] uvcvideo: EOF in empty payload. > [ 693.563740] uvcvideo: frame 2 stats: 0/254/255 packets, 0/0/255 pts (!early initial), 253/255 scr, last pts/stc/sof 536945656/541069838/121 > [ 693.595614] uvcvideo: Frame complete (EOF found). > [ 693.595615] uvcvideo: EOF in empty payload. > [ 693.597074] uvcvideo: frame 3 stats: 0/254/255 packets, 0/0/255 pts (!early initial), 253/255 scr, last pts/stc/sof 541101909/545231972/154 > [ 693.628948] uvcvideo: Frame complete (EOF found). > [ 693.628949] uvcvideo: EOF in empty payload. > [ 693.630406] uvcvideo: frame 4 stats: 0/254/255 packets, 0/0/255 pts (!early initial), 254/255 scr, last pts/stc/sof 545258164/549394108/188 > [ 693.662279] uvcvideo: Frame complete (EOF found). > [ 693.662280] uvcvideo: EOF in empty payload. > ....... > [ 710.361665] uvcvideo: EOF in empty payload. > [ 710.363124] uvcvideo: frame 506 stats: 0/254/255 packets, 0/0/255 pts (!early initial), 253/255 scr, last pts/stc/sof 2631698065/2635823538/534 > [ 710.394996] uvcvideo: Frame complete (EOF found). > [ 710.394997] uvcvideo: EOF in empty payload. > [ 710.396456] uvcvideo: frame 507 stats: 0/254/255 packets, 0/0/255 pts (!early initial), 253/255 scr, last pts/stc/sof 2635854320/2639985673/567 > [ 710.428329] uvcvideo: Frame complete (EOF found). > [ 710.428330] uvcvideo: EOF in empty payload. > [ 710.428407] uvcvideo: uvc_ioctl_streamoff 1 > [ 710.432808] uvcvideo: uvc_v4l2_release > [ 710.435191] uvcvideo: uvc_v4l2_release > [ 712.815575] uvcvideo: Suspending interface 1 > [ 712.815578] uvcvideo: Suspending interface 0 > > On Fri, Nov 25, 2022 at 2:32 AM Laurent Pinchart wrote: > > > Hi Amos, > > > > Could you please avoid dropping the mailing list from CC when replying ? > > > > On Wed, Nov 23, 2022 at 09:43:10PM +0100, Amos Tibaldi wrote: > > > Hello, I attached the dmesg text file of one linux mint 20.1 that I have > > > just installed. The issue is the same. I hope it helps. Thanks. > > > > Quoting the interesting part from the log: > > > > > [ 823.596518] usb 2-3: new SuperSpeed Gen 1 USB device number 2 using xhci_hcd > > > [ 823.629237] usb 2-3: New USB device found, idVendor=1bcf, idProduct=2c99, bcdDevice= 2.00 > > > [ 823.629239] usb 2-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0 > > > [ 823.629240] usb 2-3: Product: ezcap U3 capture > > > [ 823.629241] usb 2-3: Manufacturer: VXIS Inc > > > > So far so good. > > > > > [ 823.659423] mc: Linux media interface: v0.10 > > > [ 823.667890] videodev: Linux video capture interface: v2.00 > > > [ 823.678367] usb 2-3: 3:1: cannot get freq at ep 0x86 > > > [ 823.685869] usb 2-3: 3:2: cannot get freq at ep 0x86 > > > [ 823.692874] usb 2-3: 3:3: cannot get freq at ep 0x86 > > > > This I don't like. I've seen many devices having trouble with the audio > > side, which resulted in different kind of firmware misbehaviours (most > > likely including crashes) that affected the video side. Could you try to > > blacklist the snd_usb_audio module to see if it helps ? It can be done > > by adding > > > > blacklist snd_usb_audio > > > > to /etc/modprobe.d/blacklist.conf > > > > > [ 823.738250] usb 2-3: Warning! Unlikely big volume range (=4096), cval->res is probably wrong. > > > [ 823.738252] usb 2-3: [5] FU [Digital In Capture Volume] ch = 1, val = 0/4096/1 > > > [ 823.738384] usbcore: registered new interface driver snd-usb-audio > > > [ 823.740047] uvcvideo: Found UVC 1.00 device ezcap U3 capture (1bcf:2c99) > > > [ 823.760905] input: ezcap U3 capture: ezcap U3 capt as /devices/pci0000:00/0000:00:01.3/0000:02:00.0/usb2/2-3/2-3:1.0/input/input17 > > > [ 823.760976] usbcore: registered new interface driver uvcvideo > > > [ 823.760977] USB Video Class driver (1.1.1) > > > > Could you start video capture with any application and check if > > additional messages are then printed in the kernel log ? > > > > > On Wed, Nov 23, 2022 at 9:04 PM Laurent Pinchart wrote: > > > > > > > Hi Amos, > > > > > > > > CC'ing the linux-media mailing list. > > > > > > > > On Wed, Nov 23, 2022 at 07:16:05PM +0100, Amos Tibaldi wrote: > > > > > Hello, > > > > > I have a usb framegrabber and it worked fine in ubuntu 20.04 and previous > > > > > releases of ubuntu with the uvcvideo.ko kernel module but now that I have > > > > > ubuntu 22.10 the uvcvideo.ko does not work with the ezcap261 framegrabber. The > > > > > ko is loaded but cheese or xawtv or vlc go on timeout when issuing video > > > > > acquisition, and the select returns wrong argument. I have also updated the > > > > > firmware of the framegrabber. What can I do? > > > > > > > > Could you please send a copy of the kernel log, in text form ? You can > > > > retrieve it with `dmesg` or `sudo dmesg`. I'm particularly interested in > > > > messages printed when the device is plugged in, or when an application > > > > attempts to use it. -- Regards, Laurent Pinchart
