Mohammad Etemaddar's questions

Celestia still doesn't have binaries for 19.10
The other option is to build from source.
I've downloaded the source of 1.6.2-beta2 from github.
Installed needed packages written here. plus gettext said here. so the needed packages was:

sudo apt install qtbase5-dev-tools qtbase5-dev libqt5opengl5-dev qtchooser libglu1-mesa-dev libpng-dev libjpeg-dev libtheora-dev liblua5.3-dev build-essential gettext

the INSTALL says how to build. while desktop of Ubuntu is gnome we need this instructions (maybe you need to do autoreconf --install before starting the first line.):

autoreconf -f
./configure --with-gnome    #says --with-INTERFACE
make
make install

the first line done successfully. but in configure step. we face the needed packages:

No package 'libgnomeui-2.0' found
No package 'gtk+-2.0' found
No package 'gtkglext-1.0' found

but I do not know how to install these packages. I can not find them. How can I install these packages and finalize installation of Celesta?

I want to add a new repository, But I get error at the beginning:

$ gpg --verbose --keyserver keys.gnupg.net --recv 886DDD89
gpg: keyserver receive failed: Server indicated a failure

I also tried adding hkp:// and :80. But did not work:

$ gpg --keyserver hkp://keys.gnupg.net:80 --recv 886DDD89
gpg: keyserver receive failed: Server indicated a failure

Also changed the DNS in resolv.conf to:

nameserver 8.8.8.8 # Google dns

It got the same error. I tried to use the --verbose option. But had no new debugging info.

We can install Tor 0.3.x on Ubuntu from Ubuntu's default repository. I want to have updated tor version. Because the 0.3.x version doesn't work here any more. Is there any repository that offers Tor 0.4.x for Ubuntu? Or what is the standard way to compile 0.4.x or even better, as an Ubuntu package?

In Android we have applications like daedalus which is a local VPN (Not remote) and used to change DNS quickly. I need such way in Ubuntu in order to change DNS whenever needed.

Do we have any way to create such VPN which doesn't make remote tunnel and just changes DNS? Or any other way to switch DNS servers as I need to switch my DNS frequently.

I use Persian loclae. In addition to displaying wrong words for the time, I prefer to display the original English words. Also in system logs. How should I do this?

I setup passwordless ssh login. I could connect through ssh and also used sftp. suddenly I could not connect any more and ssh freezed.

• Server: Ubuntu 16.04
• Client: Ubuntu 18.04

ssh --vvv user@host freezes at pledge: network

...
debug2: we sent a publickey packet, wait for reply
debug3: receive packet: type 60
debug1: Server accepts key: pkalg rsa-sha2-512 blen 279
debug2: input_userauth_pk_ok: fp SHA256:w7sj+s08FJPpL09IVtmXmGZOUgxVHGcgpjCL3vxzSaQ
debug3: sign_and_send_pubkey: RSA SHA256:w7sj+s08FJPpL09IVtmXmGZOUgxVHGcgpjCL3vxzSaQ
debug3: send packet: type 50
debug3: receive packet: type 52
debug1: Authentication succeeded (publickey).
Authenticated to <host> ([<IP>]:22).
debug1: channel 0: new [client-session]
debug3: ssh_session2_open: channel_new: 0
debug2: channel 0: send open
debug3: send packet: type 90
debug1: Requesting [email protected]
debug3: send packet: type 80
debug1: Entering interactive session.
debug1: pledge: network
debug3: send packet: type 80
debug3: send packet: type 80
debug3: send packet: type 80
Timeout, server <host> not responding.

Before this happens, I started another ssh on the same host with same user and it freezed at sign_and_send_pubkey so I started the previously said ssh.

...
debug2: we sent a publickey packet, wait for reply
debug3: receive packet: type 60
debug1: Server accepts key: pkalg rsa-sha2-512 blen 279
debug2: input_userauth_pk_ok: fp SHA256:w7sj+s08FJPpL09IVtmXmGZOUgxVHGcgpjCL3vxzSaQ
debug3: sign_and_send_pubkey: RSA SHA256:w7sj+s08FJPpL09IVtmXmGZOUgxVHGcgpjCL3vxzSaQ
debug3: send packet: type 50
Connection to <IP> port 22 timed out

• I tried reinstalling openssh-server from server and ssh from client. also restarted both of them (Server and client computer).

• Also tried to force connecting by password. It just changed the line Authentication succeeded (password) at output.

• Somebody said set UsePAM no, It did not work.

• Tried by -o IPQoS=0 and had the same output.

At server recorded these at syslog:

...
May  7 07:26:10 host systemd[1]: Started Session c103 of user <user>.
May  7 07:26:10 host systemd[1]: Started Session c104 of user <user>.
May  7 07:26:26 host systemd[1]: Started Session 47 of user <user>.
May  7 07:26:33 host systemd[1]: Started Session 48 of user <user>.

I think this problem is from client. Because my friend could connect to server from his own computer.

Old title - "change resolution to 1280x1024 using xrandr gives: X Error of failed request: BadValue (integer parameter out of range for operation)"

I have installed a fresh Ubuntu 17.10 and have a monitor with 5:4 resolution. settings has no resolution higher than 1024x768. But I need the resolution 1280x1024 (5:4). I use the default motherboard graphics card:

# lspci|grep VGA
00:02.0 VGA compatible controller: Intel Corporation 4 Series Chipset Integrated Graphics Controller (rev 03)

Also xrandr gives the following:

$ xrandr
Screen 0: minimum 320 x 200, current 1024 x 768, maximum 8192 x 8192
XWAYLAND0 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
   1024x768      59.92*+

I tried to add the 1280x1024 resolution using xrandr. so first created the resolution information using gtf:

$ gtf 1280 1024 60

  # 1280x1024 @ 60.00 Hz (GTF) hsync: 63.60 kHz; pclk: 108.88 MHz
  Modeline "1280x1024_60.00"  108.88  1280 1360 1496 1712  1024 1025 1028 1060  -HSync +Vsync

Then added to resolutions:

xrandr --newmode "1280x1024_60.00"  108.88  1280 1360 1496 1712  1024 1025 1028 1060  -HSync +Vsync

then again did the command: xrandr --addmode XWAYLAND0 1280x1024_60.00

Then nothing changed. When I tried to change it using xrandr --output XWAYLAND0 --mode 1280x1024_60.00 --rate 60 But an error occurred:

$ xrandr --output XWAYLAND0 --mode 1280x1024  --rate 60
X Error of failed request:  BadValue (integer parameter out of range for operation)
  Major opcode of failed request:  140 (RANDR)
  Minor opcode of failed request:  7 (RRSetScreenSize)
  Value in failed request:  0x0
  Serial number of failed request:  21
  Current serial number in output stream:  22

I don't know what did I do wrong. Or how to change resolution to the correct one: 1280x1024

I want to change the ssh port from 22 to 2800. I tried to change the /etc/ssh/ssh_config and removed the # from Port line and changed the number to 2800. after trigger the command: service ssh restart The connection continued. When I tried to connect from the port 2800, It refused. The Content of /etc/ssh/ssh_config is: Removed commented lines

Host *
Port 2800
    SendEnv LANG LC_*
    HashKnownHosts yes
    GSSAPIAuthentication yes
    GSSAPIDelegateCredentials no

The command service ssh status gives the following output:

● ssh.service - OpenBSD Secure Shell server
   Loaded: loaded (/lib/systemd/system/ssh.service; enabled; vendor preset: enabled)
   Active: active (running) since Fri 2017-09-22 20:31:45 IRST; 1s ago
 Main PID: 1825 (sshd)
    Tasks: 1
   Memory: 724.0K
      CPU: 5ms
   CGroup: /system.slice/ssh.service
           └─1825 /usr/sbin/sshd -D

Sep 22 20:31:45 GoodMind systemd[1]: Starting OpenBSD Secure Shell server...
Sep 22 20:31:45 GoodMind sshd[1825]: Server listening on 0.0.0.0 port 22.
Sep 22 20:31:45 GoodMind sshd[1825]: Server listening on :: port 22.
Sep 22 20:31:45 GoodMind systemd[1]: Started OpenBSD Secure Shell server.

I tried other ports too. But still it has the same status. What do I do wrong?

I have added the locale language at installation. But now, When I change the language from toolbar, It still types English. System is installed freshly and has latest updates.

Edit:

I have removed the Persian and Added Persian (with Persian keyboard). Now I can switch the language throw toolbar, But when I change it via Alt + Shift , The language name on toolbar changes but the input language still is English.

• I have Ubuntu-Gnome 13.10
• Language: Persian (fa)

What is the solution?

Think you have a package which is installed or is available by apt or software manager. So you have it's repository already added. Now you need help another user add needed repository.

How can I determine the repository which that package is available from?

I have to run four OSs simultaneously and do not need graphical desktop. and I have only Ubuntu desktop CD. Is it possible to install Ubuntu desktop without graphical environment?

I have installed Frama-C on 13.04 via apt-get.

However, after installation, I can not run it. When I type frama-c in terminal; nothing happens.

Also frama-c doesn't appear in the dash! I have checked software center and it was checked as installed and also I got output from frama-c --version

How can I detect the problem?

Unfortunately the package "qucs" which could be installed on Ubuntu 12.04, got the following error and could not be installed on Ubuntu 13.04.

Package qucs is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'qucs' has no installation candidate

I tried apt-get update too; But that did not solve the error.

When we are connected to an FTP server (from command line), How can we change the local directory?

I want to start the ubuntu update at night because internet is free at that time. and then kill the process in order to ensure that it does not download anything after 7:00 AM.

Is there any way to know the process ID of the cron job in order to kill it before the process run? Or any other way?

Possible Duplicate:
How to format/partition SD card?

I want to partition SD-Card to use the Link2SD on android based mobile phone. I should make two partitions.

• first a Fat partition for the user data
• second an ext4 for the applications

How can I do this?

I want to install the genius facecam 300 driver on ubuntu 12.04 64bit. I saw this website that seems to be useful: http://patchwork.linuxtv.org/patch/11269/; But I do not know how should I use it exactly.

Bus 004 Device 002: ID 093a:2627 Pixart Imaging, Inc.

How can I install that driver?

I can not open Youtube. Because of government restriction. So when I open minitube, I can not search or watch any video. I used tor and tsocks to open minitube, then I can search by minitube; But whenever I click on any video, It does not show it! How can I find and resolve the problem?