16.04 – ATI RV370 graphics problems with the installation of Ubuntu on the Dell Dimension 9100 desktop

My current installation is Ubuntu 18.04. I also tried versions 14.04 and 16.04 and I still have the same problems:

Screen artifacts, delay, freezing, windows break and fragment and stick together on each other even after closing them.
My graphics card is ATI Radeon X300 SE HyperMemory

Something very strange happens when I run glxgears from the terminal: Everything is suddenly fixed …!?
It is not perfect and when I drag the windows there is still some image echo, but it is far from freezing and the artifacts that hide the screen.

What is enabled or disabled when glxgears is run?
I let it run while I start the GIMP and Inkskape sessions and everything works wonderfully well …

Is there a script I can use to replicate what glxgears does and permanently solve graphics problems in my ubuntu installation?

Or better yet, is there a kernel driver solution or driver version that I can install to solve my graphics problems?

16.04 – Procmail: send default emails to deliver

I have a question ^^:

First I show you a simple procmail rule:

DELIVER="/usr/lib/dovecot/deliver -d $LOGNAME"
# deliver spam to spam folder
:0 w
* ^X-Spam-Status: Yes
| $DELIVER -m Spam

# deliver to INBOX and stop
:0 w

Now my question, is there any way to use DELIVER as default as:

DEFAULT="/usr/lib/dovecot/deliver -d $LOGNAME"

So that all the mails will dovecote after the procmail rules are verified?

I have upgraded from Xubuntu 16.04 to Xubuntu 18.04 and now my local Bluetooth services are gone

I use a presenter (old Sony Walkman mobile) to control slide shows and presentations. After the update, the list in the "local services" blueman applet is missing the HID profile among all others (for example, hands-free), with the exception of Network and Transfer. What can I do to retrieve profiles? I mean, it had been working perfectly before the update, so it is verified that the hardware supports it

Unable to start ubuntu 16.04 from USB

I have an asus N501 (BIOS mode is UEFI) and installed ubuntu 14.04 about 3 years ago. After reinstalling my window, I decided to install ubuntu 16.04 instead of repairing the boot of the previous version.

Anyway, after using rufus and making a bootable usb and trying to boot into ubuntu, the system stopped at the ubuntu logo and didn't go further, I checked the usb on new and old computers and ubuntu worked without problems, even I updated my BIOS since it was a 5-year version but nothing changed. I decided to verify ubuntu 18.04, ubuntu 14.04 and lubuntu 16 but they have the same problem (14.04 worked once but the result was not repeated) I downloaded and used an earlier version of rufus and surprisingly managed to boot into ubuntu 16.04 and installed it but after that time I could not start the version installed on the system and I also had the same problem when I tried to start from the USB drive. I have tried the process many times and nothing worked.

I also downloaded YUMI as an alternative to rufus (the UEFI version) but the USB was not even recognized in the boot menu) and used two other softwares that did not work properly.

Does anyone have a suggestion for my problem or can you recommend a good alternative for rufus or yumi?

Thank you 🙂

16.04 – unreachable port in pings from VM invited to the internet. (KVM Virt-Manager default NAT network)

Using virt-manager, KVM in Ubuntu, I created a VM with default network configuration (NAT) as described here: https://wiki.libvirt.org/page/VirtualNetworking in NAT mode.

You should have internet connectivity by default. But I can't ping Internet addresses from the VM. instead, I get an unreachable destination port from the corresponding host interface

ping results

I suspect it has something to do with the iptables settings & # 39; reject with unreachable icmp port & # 39; in the forwarding table below. The rules were created atomically by virt manager, but even when I delete the rules, I still have the same problem. any ideas please

Chain FORWARD (policy ACCEPT)
num  target     prot opt source               destination         
1    ACCEPT     all  --  anywhere        ctstate RELATED,ESTABLISHED
2    ACCEPT     all  --     anywhere            
3    ACCEPT     all  --  anywhere             anywhere            
4    REJECT     all  --  anywhere             anywhere             reject-with icmp-port-unreachable
5    REJECT     all  --  anywhere             anywhere             reject-with icmp-port-unreachable
6    ACCEPT     all  --  anywhere        ctstate RELATED,ESTABLISHED
7    ACCEPT     all  --     anywhere            
8    ACCEPT     all  --  anywhere             anywhere            
9    REJECT     all  --  anywhere             anywhere             reject-with icmp-port-unreachable
10   REJECT     all  --  anywhere             anywhere             reject-with icmp-port-unreachable
11   ACCEPT     all  --  anywhere             anywhere            
12   ACCEPT     all  --  anywhere             anywhere            
13   ACCEPT     all  --  anywhere             anywhere            
14   DOCKER-USER  all  --  anywhere             anywhere            
15   DOCKER-ISOLATION-STAGE-1  all  --  anywhere             anywhere            
16   ACCEPT     all  --  anywhere             anywhere             ctstate RELATED,ESTABLISHED
17   DOCKER     all  --  anywhere             anywhere            
18   ACCEPT     all  --  anywhere             anywhere            
19   ACCEPT     all  --  anywhere             anywhere            

and NAT rules

num  target     prot opt source               destination         
1    RETURN     all  --     base-address.mcast.net/24 
2    RETURN     all  --     
3    MASQUERADE  tcp  --    !     masq ports: 1024-65535
4    MASQUERADE  udp  --    !     masq ports: 1024-65535
5    MASQUERADE  all  --    !    
6    RETURN     all  --     base-address.mcast.net/24 
7    RETURN     all  --     
8    MASQUERADE  tcp  --    !     masq ports: 1024-65535
9    MASQUERADE  udp  --    !     masq ports: 1024-65535
10   MASQUERADE  all  --    !    
11   MASQUERADE  all  --        anywhere            
12   MASQUERADE  all  --     anywhere            
13   MASQUERADE  all  --     anywhere            

Thank you,

synchronization: time synchronization between two Ubuntu 16.04 desktops with Internet connection

I have two Ubuntu 16.04 desktops with ROS installed on both. I am publishing data on the use of one of the computers and subscribing to that information on the other computer. I have written a small script that calculates latency. The script measures the current Unix time with the Unix timestamp associated with the data. But, I get negative latency (that is, I receive data before it is published), which makes no sense.

Obviously there is a problem of time synchronization between the two machines. I assumed that the Ubuntu system connected to the internet is already synchronized. We do not need to perform any other synchronization. Am I wrong in that assumption? Do I need to perform some kind of synchronization between the two machines?

Thank you!

Wireless networks: Ubuntu 16.04 Wi-Fi network disconnected

I have a problem with wifi in my ubuntu 16.04. Suddenly, after opening the laptop after sleeping, it stopped working. I could not connect to wifi.

I am helpless. I tried several things. Reset network administrator, interface editing, etc.
Can someone help me please?

This is how it looks:
the wifi

In Edit Connections, I deleted the old ones and created a bridge and then added the type of ethernet connection but the device does not appear there:
edit connection

Here is the content of / etc / network / interfaces:

This is what I get from iwconfig:

I have no idea how to solve this. You cannot connect to a wired cable because it does not. I can not download anything. HELP!

16.04 – vlc: there is no suitable audio output module in Ubuntu Xenial

Vlc cannot find any audio output module in Ubuntu Xenial:

$ vlc --ignore-config
VLC media player 2.2.8 Weatherwax (revision 2.2.7-14-g3cc1d8cba9)
(09207cc0) core audio output error: no suitable audio output module
(09207d60) core interface error: no suitable interface module
(091e6228) core libvlc error: interface "hotkeys,none" initialization failed
(09208018) core interface error: no suitable interface module
(091e6228) core libvlc error: interface "globalhotkeys,none" initialization failed
(09208018) core interface error: no suitable interface module
(091e6228) core libvlc error: interface "dbus,none" initialization failed
(091e6228) core libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
(09208018) core interface error: no suitable interface module
(091e6228) core libvlc error: interface "default" initialization failed
(0920ced0) core playlist error: could not export playlist

EDIT 0: My Ubuntu release:

$ lsb_release -a
No LSB modules are available.
Ubuntu 16.04.6 LTS

lubuntu – vnc gray screen (16.04, tightvnc, gcp,):

I could see the destkop when I was using "sudo reboot" in the instance of GCP but when I stopped Y started GCP instance, now I have a gray screen.

I used these steps to configure the desktop on the GCP instance the first time.

$ sudo apt-get update
$ sudo apt-get upgrade
$ sudo apt-get install gnome-shell
$ sudo apt-get install ubuntu-gnome-desktop
$ sudo apt-get install autocutsel
$ sudo apt-get install gnome-core
$ sudo apt-get install gnome-panel
$ sudo apt-get install gnome-themes-standard

and this is what my ~ / .vnc / xstartup

autocutsel -fork
xrdb $HOME/.Xresources
xsetroot -solid grey
export XDG_CURRENT_DESKTOP="GNOME-Flashback:Unity"
export XDG_MENU_PREFIX="gnome-flashback-"
gnome-session --session=gnome-flashback-metacity --disable-acceleration-check --debug &

Unable to detect wireless networks in Ubuntu 16.04

I have an HP OMEN dual boot with Windows and Ubuntu 16.04. Until a few days ago, I was able to detect Wi-Fi networks without problems. However, suddenly I can no longer see any wireless network. In addition, the wireless interface is missing the network administrator.

The exit of sudo lshw -C network It is as follows

       description: Network controller
       product: Wireless-AC 9560 (Jefferson Peak)
       vendor: Intel Corporation
       physical id: 14.3
       bus info: pci@0000:00:14.3
       version: 10
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list
       configuration: driver=iwlwifi latency=0
       resources: irq:16 memory:ba21c000-ba21ffff
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:3c:00.0
       logical name: eno1
       version: 16
       serial: e4:e7:49:3b:09:5e
       size: 100Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168h-2_0.0.2 02/26/15 ip= latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
       resources: irq:17 ioport:3000(size=256) memory:bc304000-bc304fff memory:bc300000-bc303fff

The command ifconfig It only shows results related to eno1 and what but nothing related to wlan0 as it used to.

The interfaces file in / etc / networks / interfaces says the following:

# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

I restarted the network administrator following the suggestions here. That did not help. Nor the suggested steps here.

I can still use Ethernet but I am not sure how to fix it. Any help would be highly appreciated!