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Unanswered Questions

3,898 questions with no answers
9 votes
0 answers
8k views

Why is there no UDP port forwarding in SSH?

I know SSH can forward TCP ports, not UDP. I'm not seeking help to circumvent this restriction (this subject is covered here). I'd like to know what is the reason SSH never got UDP forwarding ability....
8 votes
0 answers
1k views

Running Android Emulator with HAXM acceleration and VirtualBox in parallel on Windows

I am trying to understand if it is feasible to run the Android Emulator with HAXM-based acceleration and VirtualBox side by side on the same Windows host. I have a Windows host running a 64 bit ...
8 votes
0 answers
1k views

VBoxManage: error: Cannot read the partition information from '/dev/disk0'

I'm trying to make a partition .vmdk file for Virtual Box. Basically I want to boot my bootcamp partition box up in Virtual Box. But I get the following error when I try to make the .vmdk file ...
7 votes
0 answers
367 views

How to route OpenVpn traffic through another server?

I have a server (ubuntu 22.04) with Openvpn on it on port 443 (with docker image kylemanna/docker-openvpn). It is working with no problem and the clients can connect to it. The problem is that the ...
7 votes
0 answers
18k views

How to overcome VirtualBox 256MB limit of video memory

My host machine has a 2GB graphic card (GeForce GT740M) but VirtualBox allows me to use just 256MB of memory. Because I would use CAD applications on Win7 (Guest) I would like to have more memory to ...
7 votes
0 answers
4k views

How do I remote SSH into an IPv6 address behind a router firewall?

I have this fancy new ubuntu server I just built assembled, and I'm trying to set up ssh from anywhere so I can keep it headless. I've been able to set it up locally, and as long as I'm on the ...
7 votes
0 answers
3k views

Make Genymotion use a host VPN

I'm using Cisco's AnyConnect to connect to a VPN using my Windows 8.1 PC. When using the Genymotion emulator, I would like it to use the VPN too. However, although having Internet access from the ...
6 votes
0 answers
5k views

rcu_sched detected stalls on CPUs/tasks

I'm running many VMs using Virtualbox. These VMs use Debian 10.3 (the latest version). And I'm experiencing bugs / freezes as you can see below. It looks like this is happening on the VMs where I ...
6 votes
0 answers
19k views

Force restart of systemd-logind.service

I'm having trouble login using ssh on one server, the connection takes too long. I have had the same situation before on a different server and restarting systemd-logind.service worked. I tried to ...
6 votes
0 answers
7k views

Reverse sshfs over ssh

I want to mount dir on remote machine from host machine connected over ssh preferably via ssh tunnel; with method described below. how to mount local directory to remote like sshfs? But if get peer ...
6 votes
0 answers
831 views

VBoxManage setextradata command does not add avx2 to /proc/cpuinfo

Linux & VirtualBox noob here, so please go easy. I've been running into problems compiling code with scipy in a VirtualBox 5.2 VM running Fedora 26 on my host Windows 10. The cryptic error output ...
6 votes
0 answers
3k views

Virtualbox host io cache applying scenarios

Virtualbox docs says that using host io cache for sata controller may be a risk of system performance. At the same time, on my case I see advantage of using host io cache - DisckCrystalMark reports ...
5 votes
0 answers
581 views

How to troubleshoot a long delay when connecting over SSH?

SSH'ing to my Linux workstation from my Mac laptop works totally fine, except that there is sometimes a very long delay before I see a prompt. If I try again then it's fast like normal, but a few ...
5 votes
0 answers
2k views

Qemu throws back error after i tried to use whpx acceleration (not sure if this the right community)

I am using qemu to emulate Zorin OS 16 (a hour old user of qemu) I tried to emulate Zorin OS 16 with whpx acceleration with this command in power shell: qemu-system-x86_64.exe -boot d -cdrom zorincore....
5 votes
0 answers
1k views

Installing Windows virtualization features within KVM virtual machine causes early-boot guest crash

See updates below for what I've discovered about the more general nature of this problem. I have a Windows VM running OVMF firmware with VFIO passthrough for a graphics card running on an Arch Linux ...

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