I want to create a simulated SMR disk under the ubuntu16.04 system, but there is an error in the process of dmsetup。
for problem：
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I am also using the root user
Related
I am trying work with the demo of touchgfx designer with my stm32g071rb and the x-nucleo-gfx01m2.
The example project works fine if I flash it via TouchGFX designer.
When I import it in stm32cubeide, after setting up the external loader found in the touchgfx directory, i get the following error:
Erasing memory corresponding to segment 0:
Erasing internal memory sectors [0 34]
Erasing memory corresponding to segment 1:
Erasing external memory sector 0
Download in Progress:
File download complete
Time elapsed during download operation: 00:00:02.135
Verifying ...
Error: Data mismatch found at address 0x90000000 (byte = 0x00 instead of 0xD2)
Error: Download verification failed
Shutting down...
Exit.
I've also tried to use the stm32programmer but i get the same error.
How can i fix this?
I am trying to run the following in a sandbox environment but I keep running into the below error
`Uncaught DOMException: Failed to read the 'caches' property from 'Window': Cache storage is disabled
because the context is sandboxed and lacks the 'allow-same-origin' flag.
at dt (<anonymous>:566:12382)
at <anonymous>:566:14870
at <anonymous>:566:15177
at wt (<anonymous>:566:15230)
at kt (<anonymous>:566:16193)
at Object.getSession (<anonymous>:566:11811)
at Object.processRequests (<anonymous>:566:12233)
at Object.queueRequest (<anonymous>:566:9815)
at Object.getSessionAPI (<anonymous>:566:12004)
at Map._authenticate (<anonymous>:570:376250)`
I would like to use the webcam of my old laptop (my laptop is a Packard Bell EasyNote MX37) in order to do streaming video.
I try to do this streaming video through VLC by following this tutorial from Ubuntu 14.04 LTS.
Unfortunately I'm stuck when I apply this command line :
cvlc v4l2:///dev/video0 :v4l2-standard= :input-slave=alsa://hw:0,0
:live-caching=300
:sout="#transcode{vcodec=WMV2,vb=800,acodec=wma2,ab=128,channels=2,samplerate=44100}:http{dst=:8080/stream.wmv}"
Indeed, I get this error message:
VLC media player 2.1.6 Rincewind (revision 2.1.6-0-gea01d28)
[0x19....] dummy interface: using the dummy interface module...
[0x7f1................] main access out error: socket bind error (Permission denied)
[0x7f1................] main access out error: socket bind error (Permission denied)
[0x7f1................] main access out error: cannot create socket(s) for HTTP host
[0x7f1................] access_output_http access out error: cannot start HTTP server
[0x7f1................] stream_out_standard stream out error: no suitable sout access module for `http/asf://:8080/stream.wmv'
[0x7f1................] main stream output error: stream chain failed for `transcode{vcodec=WMV2,vb=800,acodec=wma2,ab=128,channels=2,samplerate=44100}:http{dst=:8080/stream.wmv}'
[0x7f1................] main input error: cannot start stream output instance, aborting
Thanks a lot for your help!
PS: The goal is to keep an eye on my parking space.
Just like the error message says, VLC is not allowed to open the port you specified. This might be because it is already in use by another app on your OS or because your user account simply does not have the rights needed to open a port. Consider using a different port like 32000, etc.
I am trying to record audio with the PS Eye on a raspberry pi model b plus (I have tried with older b models and the same issue occurs as below).
I am able to record, and playback the recording with arecord/aplay so the mic is working. However, I want to increase the mic volume as the recording is very low.
When I attempt this in alsamixer, it exits with the following error when I use F6 to change to the PS Eye soundcard:
cannot load mixer controls: Invalid argument
I also notice that the alsa-utils service will fail when the PS Eye is plugged in (fine otherwise):
sudo service alsa-utils restart
[FAIL] Shutting down ALSA...warning: 'alsactl store' failed with error message 'alsactl: get_control:259: Cannot read control '2,0,0,Mic Capture Volume,0': Invalid argument'...failed.
[....] Setting up ALSA...warning: 'alsactl restore' failed with error message 'No state is present for card CameraB409241
Found hardware: "USB-Audio" "USB Mixer" "USB1415:2000" "" ""
Hardware is initialized using a generic method
No state is present for card CameraB409241'...amixer: Mixer hw:1 load error: Invalid argument
amixer: Mixer hw:1 load error: Invalid argument
amixer: Mixer hw:1 load error: Invalid argument
amixer: Mixer hw:1 load error: Invalid argument
amixer: Mixer hw:1 load error: Invalid argument
...
done.
The problem seems to be the controls definition of the PS Eye. I would like to know the following:
Where does alsamixer load the controls for a particular device from? Are they in the driver?
Is there a way to increase the mic volume another way?
I am not using Pulseaudio yet but will try it if I can't fix this in alsa.
thanks
Sytem logs:
Without pulseaudio installed, neither restarting alsa or trying to open the controls in alsamixer produce anything in the system log. If pulse audio is installed however, trying to open the controls in alsamixer gives:
Oct 30 10:21:26 signaler pulseaudio[19000]: [pulseaudio] alsa-util.c: Unable to load mixer: Invalid argument
Oct 30 10:21:27 signaler pulseaudio[19000]: [pulseaudio] server-lookup.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.NotSupported: Unable to autolaunch a dbus-daemon without a $DISPLAY for X11
Oct 30 10:21:27 signaler pulseaudio[19000]: [pulseaudio] main.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.NotSupported: Unable to autolaunch a dbus-daemon without a $DISPLAY for X11
I'm new to web development and I wanted to get started with some RoR (using Locomotive CMS).
One of the things Locomotive asks for is to have Mongodb. I installed using homebrew by following this link http://docs.mongodb.org/manual/tutorial/install-mongodb-on-os-x/
It installs fine but then im not able to run it!
When I type 'mongo' on terminal I get the following output :
"MongoDB shell version: 2.4.3
connecting to: test
Mon May 6 11:12:28.927
JavaScript execution failed:
Error: couldn't connect to server
127.0.0.1:27017 at src/mongo/shell/mongo.js:L112
exception: connect failed"
BACKGROUND TO HELP DEBUGGING ( on Terminal) :
1.When I type in mongod I get the following :
"all output going to: /usr/local/var/log/mongodb/mongo.log"
Ownership of mongo.log :
-rw-r--r-- 1 username admin 22133 May 6 11:13 mongo.log
2.When I input mongod --fork I get the following :
about to fork child process, waiting until server is ready for connections.
forked process: 77566
all output going to: /usr/local/var/log/mongodb/mongo.log
ERROR: child process failed, exited with error number 100
3.Typing mongod --help gives the following warning:
* WARNING: soft rlimits too low. Number of files is 256, should be at least 1000
4.I have a folder called data (which acts as amongodb database, is this where it should be?)in root (PATH : /data) Ownership of data folder :
"drwxr-xr-x 3 username wheel 102 Apr 23 21:38 data"
5.Checking if ports are free: lsof -i :27017. Ive also tried to check for a running mongo process using activity montior and found zilch!
No output
6.Ive also tried : mongo --repair. Dint help!
Ive been stuk on this for a while, I've looked at most responses on stackoverflow and searched around to find a solution to this but nothing has helped so far!
UPDATE:
When I tried to start the mongo shell, I was getting the following l
log message from mongo.log:
5/6/13 1:33:27.616 PM com.apple.launchd:
(org.mongodb.mongod[79133])
open("/private/var/log/mongodb/output.log", ...): Permission denied
So I did a chmod777 for the particular folder and the shell launches!
Although I still get a warning when it launches as:
Server has startup warnings:
Mon May 6 13:33:27.693 [initandlisten]
Mon May 6 13:33:27.693 [initandlisten]
** WARNING: soft rlimits too low.
Number of files is 256, should be at least 1000
Any idea how I can silence these warnings?
To get the information you need to determine the cause of failure you need to look in (and post for us) the output from /usr/local/var/log/mongodb/mongo.log when it is trying to start.
However, the most common reason for the failure is the lack of the default database path - at /data/db. Either create that folder (and don't forget to make sure your user has permission to read/write to it) or specify a different path with the --dbpath option.
UPDATE: as you have since found, bad permissions on the log file can cause the issue, in a similar way to bad permissions on the data path.
In terms of the warning, the information you need is here:
https://superuser.com/questions/433746/is-there-a-fix-for-the-too-many-open-files-in-system-error-on-os-x-10-7-1
It is just that though, a warning - you can run MongoDB without an issue with those limits as long as it is not under heavy load. So, if this is a development environment, unless you plan on load testing, you should be fine