Screen Sharing In Fedora 20

Hello I am a newbie to this forum and Linux. Thank you ahead of time for your advice, constructive criticism and sharing.
Fedora 15
I enter following command> yum install-gnome-tweak-tool

The result is >cannot retrieve repository metadata (repomd.xml) for repository: fedora. please verify its path and try again.

I dont know how to get to the repo to fix it. In the files i need to remove an s from HTTPSS... We did it in class but i want to learn for myself.

I am having problems with my Sony Vaio windows
it boots up saying (on a black screen, grey text):
==============================================
Windows Boot Manager
Windows failed to start. A recent hardware or software change might be the cause. To fix the problem:
1. Insert your Windows installation disc and restart your computer.
2. Choose your language settings, and then click "Next."
3. Click "Repair your computer."
If you do not have this disc, contact your system administrator or computer manufacturer for assistance.
Status: 0xc0000225
Info: The boot selection failed because a required device is inaccessible.
Enter=Continue ESC=Exit
==========================================
No matter how many times i tried to restart and even tried F10 repeatedly or Alt-F10 I can't get to any other screen other than the above screen.

So I thought ah to hell with windows on this machine. I'll just install a linux distro because it's for my uncle all he really needs is internet and watch youtube videos/movies.

I have successfully burned and installed Fedora before on other machines using LiveCDs when they had CDs.

This time I tried to burn the DVD since it's it doesn't fit on the CD (I got my ISO from http://download.fedoraproject.org/pu...86_64-21-5.iso)
But when i inserted my DVD and restarted the same black screen appears.

So i have been looking for an older version of Fedora that fits on a CD (I am thinking maybe it'll boot from a CD, not sure though) but can't find any.

Any thoughts or solution to my problem?

Thanks in advance.

I install Fedora 19 KDE Desktop on my computer, I have been searching for other desktop enviroments so I install gnome but the problem is when I try to log with Gnome 3.8 the screen turns black like if was off I was trying to fix with xrandr because i think it was a resolution problem but when I use xrandr It send a message saying 'Can't open display.'
Help me please, Im new with this stuff.

my hp a6300f home prem. vista desktop windows crashed it went to black screen it was due to virus and i recieved message from when trying to recovery from cd that unititialized/corrupt hhd biodh -4 but when i put in windows it did try to load but halted so tried fedora 5 and it took disk but needed something and was not sure what that was. i have (2048)-2 memory dual core intel processor its award phoenix bios nividia card 500gb 800hz cpu 2.0 ghz cash ram 1024 any help would be much appreciated thank you

Hi,

I have a Fedora 21 system, but I would like to update it using repos from Fedora Core 4.

I have found this article - How to Use YUM in Fedora Core 4 - that allows changes to be made to the yum settings, so that you can run yum on Fedora 4.

Is it possible to setup Fedora 21 to point at this repository over the normal one?

I realise that this is not good practice, but I would like to test out a theory to see if this will work.

TigerVNC 1.4.1 CentOS 7 Server on Intel 64 bit vncViewer is running on Windows 7 & 8.1 Using both TigerVNC and Tight VNC viewers The CentOS GUI login screen appears with the correct (su) user name. The screen refreshes ~ twice per second allowing only one character to be entered in the Authentication box before refreshing. I am unable to login remotely via VNC. PuTTY access, etc., works fine.

Hi,

This might be odd, but in GNOME Shell 3.10.4 in fedora 20, I used to throw the mouse to the top left of the screen and that would make me feel excited about having all the open windows jam packed and then again selecting one I wanted. It really gave me a thrill.

But, in GNOME Shell 3.14.4, fedora 21 (workstation), I have to "click" on the "activities" on the top-left :-((

Is there any way I can change GNOME Shell 3.14.4 in way to have that feature back?

I have been flailing trying to get a web server running on Fedora 21.

Finally did so.

I have my iptables working (me thinks) as they should. I can connect from my Linux box (local) or from my Mac on the same network/subnet.

Problem is in my "travels" I have somehow trashed my firewall-cmd.

I was adding parameters to it w/o issue. E.G
firewall-cmd --zone=public --add-port=80/tcp --permanent
Then restarting firewall-cmd
firewall-cmd --realod

This was all working. I "fixed" my problem with connecting to my web server from other LAN workstations (iptables issues) and was going back to see if all was well. Now when I try to restart I get a:
FirewallD is not running
That from my "reload" command above.

Have I fixed my web server issue or is my world wide open att?

Assistance, as always, greatly appreciated.

Skip

Hi,
i have a index page in /var/www/html, from the local machine i can open the page as localhost or the machine name even the firewall is on or off, But when i type the ip of the machine in another LAN pc it automautically navigate to another folder say like 192.168.1.1 enter -> 192.168.1.1/newpage and gives out 404 error when the firewall is up but i get the page when the firewall is down what do i do?

Hi guys

I have installed Linux in a virtualbox on a windows 8 laptop. I found the screen size in the vrtualbox running ubuntu to be too small so I looked around for a solution.

I came across this

'Use Xdiagnose From the Dash, search for and launch Xdiagnose, then enable all the options under the Debug section. Click the Apply button, then close the window and restart the system. You’ll have to restart. Logging out, then in won’t do.'

After doing so my screen went from bad to worse and now I can only see a pixelated view of my screen.

Does anyone know how to work around this problem and get a bigger screen in virtualbox ?