unetbootin doesn't run under Wayland

[Pointedstick]

$ sudo unetbootin
No protocol specified
unetbootin: cannot connect to X server :0

I'm using Fedora 25 with Wayland, so there is no X server. If I log into an X session instead of Wayland, unetbootin works.

This is because Wayland doesn't permit GUI programs to run as root. Instead, they are expected to run the main GUI as the user and request elevated privileged for only what's needed.

[techtonik]

On Fedora 25 the magic workaround:

1. under user run

$ xhost local:root
non-network local connections being added to access control list

2. then with sudo

$ sudo QT_X11_NO_MITSHM=1 /usr/bin/unetbootin 

I can not explain why it is necessary. =/

[dnylpz]

i do, x server is the program that manages access to the graphic devices drivers, xhosts allows users to connect to those drivers.

since sudo doesn't have an active session nor it's allow to access the server, unetbootin cannot create an instance of it's GUI

once you run that you give sudo access to the device drivers and hence allow unetbootin (since it's running as sudo) to create a nice looking window :)

[Pointedstick]

The workaround is not sustainable, though. unetbootin needs to use Polkit rather than demanding to be run as root.

[DonyorM]

Even with Polkit, Wayland won't let a GUI run as root (not without using "legacy" options at least). I've had trouble finding the suggested way to get around this.

[JonnyTech]

This works for me: $ xhost +local

[Pointedstick]

@DonyorM the point is, it would need to be rewritten to run as a normal user, and use polkit to request elevated privileges when necessary.

[DonyorM]

Yeah, that's what I was getting at. I wish there was more documentation on how one does that though. Polkit docs are a bit messy.

[ghost]

I had to add the user to the sudoers file.

[johnnyasantoss]

What worked for me

beesu xhost `hostname -s`
beesu QT_X11_NO_MITSHM=1 unetbootin

Edit: I'm using Fedora 26

[cialu]

No working workaround for me on Fedora 26, anyway get:

No protocol specified
unetbootin: cannot connect to X server :0

[bicyu]

Techtonik's answer worked for me on Ubuntu 17.10.
My problem was the app would open, ask for p/w then close.

Not permanent solution though, need to run this command again after each restart.
xhost local:root
non-network local connections being added to access control list

Needs some work here Ubuntu team~

[kaetschap]

same happened to me on Fedora 27, but @techtonik 's answer worked, thanks!

[bicyu]

Maybe this won't work for everyone but I tired of having to sudo each time I used Unetbootin. By a fluke chance I found it worked when I logged into Ubuntu 17.10 using the old XOrg option, NOT Ubuntu.

[rubo77]

You can add an alias to your bashrc:

 alias unetbootin="xhost local:root && sudo QT_X11_NO_MITSHM=1 unetbootin"

[bicyu]

Nice work rubo77, hope it helps some people.
Sadly on Ubuntu 17.1 I still get:

Failed to run /usr/bin/unetbootin 'rootcheck=no' as user root. Unable to copy the user's Xauthorization file.

Not such an issue now tho, as I can access it if I log in via Xorg

[bicyu]

Does anyone know how to shortcut to desktop on Ubu 17-10 please?
I usually work with at least 8 screens open and it is a real pain in the bottom having to shrink all of them when i need the desk top - which is often.

Thx

[aminvakil]

@bicyu I guess you need WIN Key + d, if it doesn't work try Ctrl + Win Key + d.

[bicyu]

@aminvakil Cheers for that mate, both work.
After a lot of trail and error i finally found ct+alt+d does the same job- at least for me. However, I prefer your 2 key win+d approach.
Oh, works in 18.04 too.
BTW, for anyone who has / had issues with Wayland in 17.10, the new 18.04 has reverted to Xorg so most problems seem to have been solved. Looking at YOU Unetbootin~!
My 18.4 does seem a wee bit slower than 17.10 though, and I have the "light" version

[souxd]

you should try to run unetbootin with
sudo -EH unetbootin

https://unix.stackexchange.com/questions/422040/will-wayland-ever-support-graphical-sudo

[souxd]

just tested here, sudo -EH isn't enough by itself and will output a permission error
QStandardPaths: runtime directory '/run/user/1000' is not owned by UID 0, but a directory permissions 0700 owned by UID 1000 GID 100

by setting xhost local:root and then running sudo -EH unetbootin i got it working