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I am having issues using VNC between MacOS X and Linux.
I installed tightvnc server on CentOS Linux and vncviewer on Mac OS X. I have done all the setting to my best knowledge and then started vncserver on the Linux computer. I also opened the port 5901.
When I execute the command "vncviewer :1" on the Linux machine, things work fine. I can see desktop appear in a window.
From Mac OS X I am unable to connect to the Linux vncserver. The message I get is
"The connection was refused by the computer"
I am able to SSH from Mac to Linux so there is connection between the two computers but VNC won't work.
Can someone please help me save this issue. I have searched the web but found nothing that worked thus far.
Thanks!
Here is the message from the vnc log file.
Xvnc TigerVNC 1.1.0 - built May 11 2016 13:01:55
Copyright (C) 1999-2011 TigerVNC Team and many others (see README.txt)
See http://www.tigervnc.org for information on TigerVNC.
Underlying X server release 11704000, The X.Org Foundation
Tue Jan 24 10:03:36 2017
vncext: VNC extension running!
vncext: Listening for VNC connections on all interface(s), port 5901
vncext: Listening for HTTP connections on all interface(s), port 5801
vncext: created VNC server for screen 0
GNOME_KEYRING_SOCKET=/tmp/keyring-jWrQoB/socket
SSH_AUTH_SOCK=/tmp/keyring-jWrQoB/socket.ssh
GNOME_KEYRING_PID=7644
gnome-session[7629]: WARNING: Could not launch application 'linc-cleanup-sockets.desktop': Unable to start application: Failed to execute
child process "/usr/bin/linc-cleanup-sockets" (No such file or directory)
Failed to play sound: File or data not found
(polkit-gnome-authentication-agent-1:7668): GLib-GObject-WARNING **: cannot register existing type `_PolkitError'
(polkit-gnome-authentication-agent-1:7668): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
An instance of nm-applet is already running.
Dropbox isn't running!
Dropbox is already running!
Initializing nautilus-dropbox 2015.10.28
(null): Warning no default label for /home/amit/.gvfs
Failure: Module initalization failed
** (gnome-panel:7657): WARNING **: panel-applet-frame.c:1288: failed to load applet OAFIID:GnoteApplet:
(null)
You can tunnel the VNC connection through SSH by using local port forwarding.
To start the port forward:
ssh -NTf -L 5901:localhost:5901 user#linux_server
Then point your VNC viewer at localhost.
vncviewer localhost:5901
Related
i have problem to run script on kindle reader. i did jailbrake on it and it shows me system version
Linux kindle 2.6.31-rt11-lab126 #5 Sat Jan 12 20:39:09 PST 2013 armv7l unknown
the problem is with running the script to download the png image
curl https://kindle-pindle.herokuapp.com/ -o status.png
an error is returned
curl: (35) error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version
I read that it's probably about a bad version of curl but I can't do anything to install a new version because there is no apt-get or sudo in systm so I don't know how to do it
are there maybe other ways to deal with this?
The target site requires at least TLS 1.2. Given the age of what you are running (according to the kernel version) this is likely not supported by the TLS stack on your device.
There is probably no way to download the file directly from the device though. You should be able to download the file on a different device and transfer it to the device though or maybe redistribute it through your own web server which has TLS 1.0 enabled.
I am currently working on the ARM Cortex-M4 inside the NXP i.MX8M Mini.
I am able to compile a project for M4 on Eclipse IDE on an Ubuntu VM.
I would now like to debug on the M4 via a SEGGER Flasher ARM probe, still from Ubuntu.
My probe is well recognized by Ubuntu, and I can launch the J-Link GDB server by simply typing the command :
$ sudo ./JLinkGDBServerCLExe
However, if I type the same command without sudo, I get :
$ ./JLinkGDBServerCLExe
SEGGER J-Link GDB Server V7.58b Command Line Version
JLinkARM.dll V7.58b (DLL compiled Nov 16 2021 15:04:27)
-----GDB Server start settings-----
GDBInit file: none
GDB Server Listening port: 2331
SWO raw output listening port: 2332
Terminal I/O port: 2333
Accept remote connection: yes
Generate logfile: off
Verify download: off
Init regs on start: off
Silent mode: off
Single run mode: off
Target connection timeout: 0 ms
------J-Link related settings------
J-Link Host interface: USB
J-Link script: none
J-Link settings file: none
------Target related settings------
Target device: Unspecified
Target interface: JTAG
Target interface speed: 4000kHz
Target endian: little
Connecting to J-Link...
Connecting to J-Link failed. Connected correctly?
GDBServer will be closed...
Shutting down...
Could not connect to J-Link.
Please check power, connection and settings.
My problem is that when I start eclipse, I get the same result as starting the GDB server without sudo.
It seems that this is a rights issue, how can I solve it?
As #KamilCuk said, the problem came from the udev rules.
So you just have to copy the rules provided by Segger with J-Link Software on the system:
$ sudo cp 99-jlink.rules /etc/udev/rules.d
Then you have to reboot the system:
$ reboot
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On a Windows 10 host I have a VirtualBox virtual machine with Debian 11. The access to the VM is done by a virtual network card "Virtual Box Host Only Ethernet Adaptater".
I connect with ssh on my VM without any problem.
I have a shared folder on Windows 10, and I want to access it via a mount from my VM. I've been doing this for years, but now I can't get a stable behavior. It worked last week, but now it doesn't work anymore
I use this command:
mount -a -t cifs //192.168.56.1/vmjpweb /home/web -o "username=*******,password=*******" --verbose
The result :
/ : ignoré
none : ignoré
/media/cdrom0 : ignoré
domain=192.168.56.1
password specified twice, ignoring second
mount.cifs kernel mount options: ip=192.168.56.1,unc=\\192.168.56.1\vmjpweb,vers=3.0,sec=ntlmsspi,uid=33,gid=33,user=*******,domain=192.168.56.1,pass=********
mount error(13): Permission denied
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) and kernel log messages (dmesg)
The kernel log:
Oct 31 09:11:49 rock kernel: [ 1009.046835] CIFS: Attempting to mount //192.168.56.1/vmjpweb
Oct 31 09:11:49 rock kernel: [ 1009.221195] CIFS: Status code returned 0xc000006d STATUS_LOGON_FAILURE
Oct 31 09:11:49 rock kernel: [ 1009.221219] CIFS: VFS: \\192.168.56.1 Send error in SessSetup = -13
Oct 31 09:11:49 rock kernel: [ 1009.221263] CIFS: VFS: cifs_mount failed w/return code = -13
I just created a new local user and it works well.
The login I was using was not local on the host, but on the domain of my work. I was trying to connect to the shared folder without a connection to the domain.
I also use fstab for the running.
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rfkill list 1
command gives me:
1: ideapad_bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
However, when I run the following command,
sudo systemctl status bluetooth.service
I get this error:
bluetooth.service - Bluetooth service
Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled)
Active: active (running) since Sun 2019-01-27 13:55:21 +03; 1h 4min ago
Docs: man:bluetoothd(8)
Main PID: 950 (bluetoothd)
Status: "Running"
Tasks: 1 (limit: 4915)
CGroup: /system.slice/bluetooth.service
└─950 /usr/lib/bluetooth/bluetoothd
systemd[1]: Starting Bluetooth service...
bluetoothd[950]: Starting SDP server
systemd[1]: Started Bluetooth service.
bluetoothd[950]: Bluetooth management interface 1.14 initialized
bluetoothd[950]: Failed to set mode: Blocked through rfkill (0x12)
bluetoothd[950]: Failed to set mode: Blocked through rfkill (0x12)
bluetoothd[950]: Failed to set mode: Blocked through rfkill (0x12)
bluetoothd[950]: Failed to set mode: Blocked through rfkill (0x12)
bluetoothd[950]: Failed to set mode: Blocked through rfkill (0x12)
bluetoothd[950]: Failed to set mode: Failed (0x03)
I use Ubuntu 18.04.1 LTS. When I start bluetooth, it searches for the devices, but it never finishes.
I currently have this problem in Mint 19.3 (kernel 5.4.0-48-generic) on an X1 Carbon ThinkPad. My rfkill showed Bluetooth as Hard blocked. No idea why the following is necessary, but it worked for me:
sudo rfkill unblock bluetooth
I've had to do it twice in the last two weeks, which suggests something random is happening that results in Bluetooth being blocked after a restart. Random issues are always a hoot.
I had the same problem : rfkill did not show the device as blocked but the commands
# rfkill block bluetooth
# rfkill unblock bluetooth
worked for me.
I hope I was helpful
PS : the # means run as root (via sudo or directly logged in as the root user)
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While working on a Microsoft Azure virtual machine I noticed it was lagging significantly, so I decided to run the sudo reboot command then ssh back in. When I tried to ssh back in with
ssh user#ipaddress
i got the error:
ssh: connect to host xxx.xx.xx.xxx port 22: Operation timed out.
When I run the ssh command using -vvv i get:
OpenSSH_6.9p1, LibreSSL 2.1.8
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 20: Applying options for *
debug1: /etc/ssh/ssh_config line 53: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Connecting to xxx.xx.xx.xxx [xxx.xx.xx.xxx] port 22.
debug1: connect to address xxx.xx.xx.xxx port 22: Operation timed out
ssh: connect to host xxx.xx.xx.xxx port 22: Operation timed out
If you did a shutdown, IP of machine has been changed. Check it in the control panel.