Dear all,
good work
The debian image works now very well for me. ubuntu doesn’t upgade proper - so debian is now my candidate. Some things I had to fix - might be also interesting for others:
pulseaudio is always unhappy with the old kernel:
“shared memfd open() failed: Function not implemented”
=> add “enable-memfd=no” to /etc/pulse/client.conf
Linking error when running own compiled binaries:
“error while loading shared libraries: /usr/lib/arm-linux-gnueabihf/libc.so: invalid ELF header” => cd /lib/arm-linux-gnueabihf/libc => sudo ln -s libc.so.6 libc.so => sudo ldconfig
set performance mode, specify the governor to use at boot. Edit /etc/default/cpufrequtils (you might need to create it if it doesn’t exist). Specify the governor with the GOVERNOR variable:
valid values: userspace conservative powersave ondemand performance
get them from cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors:=> GOVERNOR=performance
Hi, How can I stream usb camera video? I’m using Logitech c930e (which with guvcview cooperate fine, device is listed in lsusb etc…). I was trying to use mjpg-streamer but it failied unfortunatelly. Currently I have installed M3 Ubuntu 16.04 Mate Desktop (which seeams to work stable with my new emmc memory). I need video streaming for my 3d printer (software for Octoprint I have installed and it runs ok, just camera problem only left). Please advice any solution for live streaming.
Hi I’m facing a problem with touch module (HC070TG38035). I have tried this module with BPI M1 and M64 boards, touch is detected but not corrected calibrated. I have used ubuntu desktop 16.04 image in both cases, getting the same result. Could you help me with this issue?
Can somebody help, Im using mipi display is it enough to connect only 4 mipi data lines(positive and negative) and clock line(positive and negative). I dont need touch interface. Display is hsd088ipw1-a. I have all voltages necessary for display.
Hi all,
I got trouble to use the M3 as an NFS 4 client with the recent debian image. I always get a null pointer dereference. Does anybody know how to solve this?
[ 54.333510] Unable to handle kernel NULL pointer dereference at virtual address 00000000
[ 54.333551] pgd = e35c8000
[ 54.333574] [00000000] *pgd=00000000
[ 54.333622] Internal error: Oops: 5 [#1] PREEMPT SMP ARM
[ 54.343109] Modules linked in: bcmdhd ft5x_ts sunxi_ir_rx vfe_v4l2 videobuf_dma_contig videobuf_core ov5640 cci vfe_subdev vfe_os pvrsrvkm(O) option usb_wwan spidev ip_tables x_tables
[ 54.343109] CPU: 0 Tainted: G O (3.4.39-BPI-M3-Kernel #3)
[ 54.343109] PC is at nfs4_init_client+0xd8/0x124
[ 54.343109] LR is at nfs_idmap_new+0xf4/0x11c
Gave up waiting for root device. Common problems:
- Boot args (cat /proc/cmdline)
- Check rootdelay= (did the system wait long enough?)
- Check root= (did the system wait for the right device?)
- Missing modules (cat /proc/modules; ls /dev)
ALERT! /dev/mmcblk1p1 does not exist. Dropping to a shell!
Rebooting automatically due to panic= boot argument
The debian image works now very well for me. ubuntu doesn’t upgade proper - so debian is now my candidate. Some things I had to fix - might be also interesting for others:
