Latest Ubuntu related questions

Score: 0
Can logint to remote server via SSH but cannot copy file via scp: Host key verification failed
vn flag

So I have set up with 3 VM running Ubuntu 20.04 server. What I am trying to do is copy a folder from machine 1 to machine 2 and then another folder from machine 1 to machine 3.

  1. All machines have OpenSSH installed with the same sshd_config (custom port, password-only etc.)
  2. On the command line I am able to login to any of machines 2 or 3 via the command ssh -p XXX username@192.168.0.xxx. Of course, i ...
Score: 0
Virt-Manager NAT network interfaces stop working if host connection is restarted
cn flag

I'm running Ubuntu (Mate) 20.04 on a workstation and I often use virt-manager to host various virtual machines for testing purposes (not for production VMs). I have found that if networking on my workstation is disabled and re-enabled, the NAT interfaces in virt-manager stop working until the host is restarted. I believe I understand this to be related to the virtual interfaces not re-initializing and ...

Score: 0
grafeno30 avatar
does not detect wifi usb inmua
ng flag

I have a USB Wifi called Inmua. When I execute the command "lsusb",I get the following information:

Bus 001 Device 017: ID 0bda:0811 Realtek Semiconductor Corp. 802.11ac WLAN Adapter

I can't find a way that when I run "ip a" that device appears

Thanks in advance

Score: 0
Recovered /usr/bin folder - Problem with permissions
cn flag

I accidentally deleted my /usr/bin/ folder on my Raspberry Pi with Ubuntu server. Luckily I had a backup. Its a little bit old, but not much changed since then. I thought I could just copy the old bin from the backup, which is in another computer, to the SD-Card from my raspberry.

It worked, ubuntu server is working again. Sudo is not. I suppose because I created the new bin on another computer (another ...

Score: 1
Victor avatar
Error message here end Kernel Panic - not syncing: attempted to kill init! exitcode=0x00007f00
ru flag

My OS crashed while I was using normally the navigator and a text editor, so I've decided to force the shutdown manually, when the screen turned on and is loading the OS it appeared that busybox screen where I am supposed to type something in initramfs, so I have typed:

<initramfs> fsck /dev/sda2/

And I typed yes in all questions during the process,

I am facing this screen each time when I tur ...

Score: 2
How to set timeout for waiting missing HDD while system boots?
it flag

System: Ubuntu 20.04 with EFI boot.


Clarification why I need this

I configured two swap partitions:

  • One primary swap on the second HDD. It is used for hibernation. (Hibernation function is better to use on HDD in order to prolong life for SSD.)
  • The second swap partition on SSD with the system. This is for case if I use SSD as single disk - when second HDD is removed and missing. In this case I just wan ...
Score: 0
samuraisam avatar
Share Secondary Internet Connection From USB over Ethernet
cx flag

I am trying to set up a backup internet connection for my house.

I have a router with two WAN ports, one of which can be used as a failover. The primary internet connection goes in WAN1. My PC has two ethernet interfaces (en0, en1), is connected to the network via en0 and uses this for the default gateway. It receives an address in the 192.168.1.x range from the router DHCP server.

Separately I woul ...

Score: 0
Lama Mao avatar
Can't dual-boot windows and linux - no luck with bcedit and grub option doesn't exist
br flag

Aight. I'm a bit of a noob so bear with me.

A while ago I decided to dual-boot Ubuntu alongside windows 10. Went all smooth but I noticed that grub didn't show up on boot. Still, found a way to launch into ubuntu using the windows advanced recovery options menu so I left it.

Decided I wanted to use Ubuntu again a while later. Perhaps a few Windows updates have passed. I can't seem to get into Ubuntu ...

Score: 0
rara23 avatar
Intermittently failing to find 5G network on 20.04
us flag

I have two wifi networks, NetworkName-2.4G and NetworkName-5G. The 2.4G network is always available, but the 5G often doesn't show up on the list. Sometimes it will be gone from the time I boot, sometimes it will drop while I'm in the middle of using it. All of my other devices can connect to it fine. I have this machine set up to dual boot Windows and Ubuntu, and the problem only occurs in Ubuntu. I am ...

Score: 0
Ricardo Figueiredo avatar
Omen 15 AMD/NVIDIA (iGPU/dGPU) second display not working
ax flag

I have an Omen 15 with Ubuntu 21.10, and my specs are:

  • CPU: AMD Ryzen 7
  • iGPU: AMD Renoir
  • dGPU: NVIDIA Geforce RTX 3070

Also I have two screens:

  • laptop builtin screen powered by iGPU (AMD Renoir)
  • external display through HDMI powered by dGPU (Nvidia RTX 3070)

Problem:

  • Its difficult to boot ubuntu, I have to add nomodeset or modeset=1 to grub settings
  • After install NVIDIA drivers (because there ...
Score: 1
Matt Hintzke avatar
How to effectively secure a process and its forked children using setuid and setgid?
cn flag

I am trying to have all unix processes to be forked by a main process using different user/group identities. I do not want either the parent or child processes to be running as root so I want 2 other identities foo and bar to be used. foo should be used to run the main application and has limited access to the file system and then bar should be used by the forked processes and have even more limite ...

Score: 0
em1s4r avatar
RTL8125 2.5GbE Controller only using 1Gb/s, how can I use the full 2.5Gb/s? 20.04 LTS
cn flag

I'm using a PCIe extension card with a RTL8125 2.5GbE Controller on it. I've installed the Realtek driver r8125-9.007.01 from here successfully, but when I run # lshw -class network I see capacity: 1Gbit/s.

  *-network
       description: Ethernet interface
       product: RTL8125 2.5GbE Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:28:00.0
   ...

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