What is the problem?
When using the streaming URL, I get no output in the browser .. it just seems to wait indefinitely.
Snapshots work. raspivid and raspistill work.
I also occasionally am getting kernel stack traces on the rpi if I let the browser sit for long enough. I don't think this is the root cause -- this may be an after effect:
[ 991.665459] Unable to handle kernel NULL pointer dereference at virtual address 00000028
[ 991.671783] pgd = 8d5ac000
[ 991.677693] [00000028] *pgd=2d8f8835, *pte=00000000, *ppte=00000000
[ 991.683974] Internal error: Oops: 17 [#1] SMP ARM
[ 991.690023] Modules linked in: xt_tcpudp iptable_mangle xt_DSCP cmac bnep hci_uart bluetooth ecdh_generic evdev brcmfmac brcmutil cfg80211 snd_bcm2835(C) rfkill snd_pcm snd_timer snd fixed uio_pdrv_genirq uio ip_tables x_tables ipv6
[ 991.703799] CPU: 1 PID: 634 Comm: mjpg_streamer Tainted: G C 4.14.27-v7+ #1100
[ 991.710696] Hardware name: BCM2835
[ 991.717548] task: 8d5a6900 task.stack: 8c860000
[ 991.724421] PC is at tcp_push+0x44/0x148
[ 991.731310] LR is at tcp_sendmsg_locked+0x308/0xdfc
[ 991.738236] pc : [<806ce054>] lr : [<806d1620>] psr: 40000013
[ 991.745187] sp : 8c861d78 ip : 8cc5267c fp : 8c861d9c
[ 991.752241] r10: 8cf9ea80 r9 : ffffffe0 r8 : 8cc5267c
[ 991.759277] r7 : 00000000 r6 : 0000ffcb r5 : 00000000 r4 : 8cc52580
[ 991.766522] r3 : 00000000 r2 : 0000ffcb r1 : 00000000 r0 : 8d59c900
[ 991.773684] Flags: nZcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
[ 991.777192] Control: 10c5383d Table: 0d5ac06a DAC: 00000055
[ 991.780479] Process mjpg_streamer (pid: 634, stack limit = 0x8c860210)
What did you already try to solve it?
I started with 2018-03-19_2018-03-13-octopi-stretch-lite-0.15.0.zip that supports the b+.
I originally had issues detecting a camera so started trying some various things based on suggestions I found in google:
I changed this:
$ grep gpu /boot/config.txt
gpu_mem=256
I also explicitly set the camera to raspi:
$ grep -v ^# /boot/octopi.txt
camera="raspi"
I also did an apt-get update then apt-get upgrade. I ran raspi-config to make sure the camera was enabled. I also ran rpi-update to update firmware.
At this point, I was able to get raspistill and raspivid to work (if I stopped the webcamd - some of the steps above were done because I didn't realize I needed to stop webcamd to get raspstill to work.)
I am able to get a static image through http://10.13.54.180:8080/?action=snapshot
A streaming image from http://10.13.54.180:8080/?action=stream just sort of hangs in the browser. If I kill webcamd, I end up with a static image on the browser. If I curl the same URL I do get a constant stream of bits.
Here's what is actually running:
ββwebcamd,431 /root/bin/webcamd
β ββmjpg_streamer,448 -o output_http.so -w ./www-octopi -n -i input_raspicam.so -fps 10
β ββ{HCEC Notify},454
β ββ{HDispmanx Notif},452
β ββ{HTV Notify},453
β ββ{VCHIQ completio},451
β ββ{mjpg_streamer},449
β ββ{mjpg_streamer},450
β ββ{mjpg_streamer},633
β ββ{mjpg_streamer},927
β ββ{vc.ril.camera},455
β ββ{vc.ril.image_en},467
β ββ{vc.ril.video_re},456
The log...
Starting up webcamDaemon...
--- Configuration: ----------------------------
camera: raspi
usb options: -r 640x480 -f 10
raspi options: -fps 10
http options: -w ./www-octopi -n
-----------------------------------------------
<13>Mar 20 04:41:42 pi: Starting Raspberry Pi camera
Running ./mjpg_streamer -o output_http.so -w ./www-octopi -n -i input_raspicam.so -fps 10
MJPG Streamer Version: git rev: 8cc9d22c1e79905d529a248ccf05bbf0625e0bf3
i: fps.............: 10
i: resolution........: 640 x 480
i: camera parameters..............:
Sharpness 0, Contrast 0, Brightness 50
Saturation 0, ISO 0, Video Stabilisation No, Exposure compensation 0
Exposure Mode 'auto', AWB Mode 'auto', Image Effect 'none'
Metering Mode 'average', Colour Effect Enabled No with U = 128, V = 128
Rotation 0, hflip No, vflip No
ROI x 0.000000, y 0.000000, w 1.000000 h 1.000000
o: www-folder-path......: ./www-octopi/
o: HTTP TCP port........: 8080
o: HTTP Listen Address..: (null)
o: username:password....: disabled
o: commands.............: disabled
i: Starting Camera
Encoder Buffer Size 81920
Additional information about your setup (OctoPrint version, OctoPi version, printer, firmware, octoprint.log
, serial.log
or output on terminal tab, ...)
Not connected to a printer. OctoPrint 1.3.6 running on OctoPi 0.15.0.