Fedora :: XDMCP - KDM Connected But Black Screen
Feb 21, 2010
This applies to GDM as well, but I'm using KDM right now so:
Linux 2.6.31.12-174.2.19.fc12.x86_64 #1 SMP x86_64
I setup XDMCP:
/etc/kde/kdm/kdmrc
[Xdmcp]
Enable=true
Willing=/etc/X11/xdm/Xwilling
Xaccess=/etc/X11/xdm/Xaccess
[security]
AllowRemoteRoot=true
DisallowTCP=false
/etc/kde/kdm/Xaccess (link to the xdm 'xaccess' file) includes:
* CHOOSER BROADCAST
In KDM settings I set it to 'no theme' and 'no custom background'. IPTables & SELinux are both off. The client & server are both on the same switch. I can connect successfully. But all I get is a black screen & an X cursor, never get to see the login prompt. Most things I find have to do with the inability to connect at all, but this connects. I'm having this problem on RHEL5.4, CentOS5.4, & Fedora 12. I'm troubleshooting it on Fedora though. I'm not able to even log in.
I must point out that for CentOS5/RHEL5 I got this working, but I didn't do anything differently that I know of. I just repeated the same process over again....but I'm using GDM on those. Is it possible that I may have to use GDM for KDE because it works with GDM? I'd like to get KDM working because that's what it's designed to do right? work the way it's configured. I've not had a chance to look into it with KDM since the time that I posted this thread.
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Jul 16, 2015
I want connect from remmina to jessie on another system via xdmcp but only black screen happened.
my daemon.conf
Code: Select all[security]
DisallowTCP=false
[xdmcp]
Enable=true
[debug]
Enable = true
And gdm3 listen on udp/177. My syslog :
Code: Select allJul 16 10:17:46 office /usr/bin/dbus-launch[1455]: X Error of failed request: BadValue (integer parameter out of range for operation)
Jul 16 10:17:46 office /usr/bin/dbus-launch[1455]: Major opcode of failed request: 140 (RANDR)
Jul 16 10:17:46 office /usr/bin/dbus-launch[1455]: Minor opcode of failed request: 7 (RRSetScreenSize)
Jul 16 10:17:46 office /usr/bin/dbus-launch[1455]: Value in failed request: 0x0
Jul 16 10:17:46 office /usr/bin/dbus-launch[1455]: Serial number of failed request: 150
[Code] ....
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Mar 6, 2010
I was messing around with the screen orientation and thought it would be funny to orient it sideways. Big mistake The screen went black.I can force a shutdown, login and I get the same black screen. I tried hooking up an external monitor and the monitor showed no input so I'm guessing my laptop doesn't have that capability with Fedora.This is my main computer.
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Nov 3, 2010
I downloaded Fedora-14-i686-Live-Desktop.iso and used the Fedora liveusb-creator to put this on a 2GB USB stick. Everything seemed to have gone well and it said complete; however, when I try to boot from the USB stick, I get a black screen with a linux copyright notice at the top and it just stays at that screen forever. I tried this on two computers with the same results.
I'd previously tried with Ubuntu and had a similar issue, it would go to a purple (if I remember correctly) Ubuntu screen and it sat that forever.
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Mar 7, 2011
This problem started within the last few minutes. I run a program in my browser that uploads data from my machine (ubuntu) to another machine (Fedora 13), for manipulation and then spits back the data that does not match our standardised information.
When I tried to run it a few minutes ago, it seemed to take a long time to make the connection. I went back and checked the machine, everything was connected and fine. I decided to reboot the machine from within KDE and then try again. Same result. I went to the machine again and tried to login through KDE, the screen goes black for a few seconds and then returns me to the login screen. I switched over to a virtual terminal and was able to login using the same credentials. I checked the .xsessions-errors file and this is what I am seeing:
[Code]....
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Dec 17, 2010
I am using Fedora 14 with a Gateway tower w/HD screen connected, obviously, with an HDMI cable. It works just fine, except for when I play some stuff online. It's only some stuff, not all. So I was just gonna ask if it has anything to do with the quality of the video. If the video isn't HD, will the sound come out worse on my computer?
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Jun 25, 2009
on Debian/Ubuntu in the login form (i suppose it's "gdm") from the bottom right corner I can pick the option to login to a remote XDMPC desktop (that of course I enabled on the other side..) the network is checked for those open XDMCP service and finally, the login box appears and i can remotely login to a "graphic terminal".
How can I do the same in Fedora? I found some guide about Xnest, Xzephyr, but I was totally unable to find a way for doing this simple task.
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Jul 22, 2010
How can I manage to avoid double login to a user account in the server by remote users? Is there a way to block it or to hide logged user accounts?
I have two server, one f12, the other f13 (behind a firewalled router) and want them to serve desktops to anybody in the local network. User accounts in both servers are established as username: user1 password: user:1 , username: user2 password: user2 ....... Every remote user should take an available user on server but no multilogin to the same user. Remote users are no adult so they can mistake. That's the problem. On the remote dektop section unmark everyone can see my desktop didnt help.
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Jun 16, 2010
I am going through cygwin's XWin.exe (XWin - queary <hostname>) to start a remote session with a RHEL 5.5 workstation. I have run gdmsetup on the worksation to allow the remote connection. Starting the remote session goes off without a problem. After about two hours, it just exits and I have to start over. This is a problem since all my gui's are killed and I have some important processes running.
/var/log/syslog/messages shows:
Jun 15 16:49:53 <host> gconfd (root-12016): SIGHUP received, reloading all databases
Jun 15 16:49:53 <host> gconfd (root-12016): Resolved address "xml:readonly:/etc/gconf/gconf.xml.mandatory" to a read-only configuration source at position 0
Jun 15 16:49:53 <host> gconfd (root-12016): Resolved address "xml:readwrite:/root/.gconf" to a writable configuration source at position 1
[code]....
There must be a 2 hour timeout set somewhere - maybe in a gconf xml file?
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Oct 28, 2009
I downloaded a bunch of updates with PackageKit, afterwards I had to restart. Now when I did, all I would get is a blank screen, no blinking prompt line or anything. I did a cold boot and the same thing happened. So, I tried it a third time and all is fine. I'm running FC11 and I'm glad everything is back to normal,but what might have caused this in the first place?
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Mar 25, 2010
As a newcomer to Linux I recently installed F12 (2.6.31.5-127) from a full installation DVD and all worked well until I decided to download a bunch of updates. When I next booted up I had a second kernel (2.6.32.9-70) and the usual other option for my XP dual boot (which still works!).Selecting either kernel leads to the Fedora logo on a blue screen and then a black screen with a small underscore cursor in the top left and no other text. This is not a command line or a text editor but it simply displays key depressions - the alpha/numeric section of the keyboard in upper and lower case as normal and then the function keys and numeric key pad as control codes commencing with As both kernels yield the same behaviour, am I right in assuming that it is one of the program updates that is causing the problem? The only way I have found to get out of this screen is ctrl.alt.del which gives a short list of programs being stopped and then the machine reboots. I don't know how to pause this screen to get the details before they disappear.I have been through loads of stuff on this forum but nothing seems to fit. From the command line terminal off the boot options screen I tried su -c yum clean all and also yum clean all but all I get from Grub is error 27 unrecognised command.
As you can tell I'm a complete beginner, but I am willing to learn. The thing is I don't know where to go from here. All I want for now is to get back to the Gnome environment I can handle, then I can explore the command line at my pace instead of being thrown in at the deep end!
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Jun 16, 2010
I'm running Fedora 13 64 bit. Everything has worked fine, until today. The latest updates killed the video.
As the bar at the bottom of the screen starts to go across and say Fedora 13 the whole bar starts to flash then goes solid white. No errors or nothing, just a black screen. What causes this?
Nvidia drivers are installed. Maybe it's them. I've had trouble with video after updates with the last 4 versions of Fedora.
How to fix this mess?
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Sep 15, 2010
After I upgraded F11 to F12 on an x86_64, the new system boots and the daemons come up, then the screen goes black and the computer restarts. But then it won't boot at all. It just keeps restarting.It could be a monitor driver problem. The one time I managed to press "I" fast enough to bring GRUB up, I tried adding "nomodeset". Nothing changed. The monitor is an HP 2009m, so it should not need "nomodeset" anyway. Xfree86.cf has not changed from F11 to F12.
I have a full DVD, so I can bring up Rescue Mode. I had hoped to find clues in (/mnt/sysimage)/var/log/messages, but nothing is being written to it. Once after I rebooted off the hard disk from Rescue Mode, I witnessed a long SElinux conversion. That disquiets me. But disabling SElinux does not solve the problem either.Can anyone suggest some kernel options that might overcome this problem? I shrink from reinstalling F11 from scratch and having to restore all my files from my backup system!P.S. I just found in my personal X11 log a message to the effect that /usr/lib64/dvi/nouveau_dri.so is missing. So it is; the directory has 12 drivers and not this one. If I remember right, "nouveau" often figures in trouble reports.P.P.S. As myself in Rescue Mode I can use xinit to bring X up! But it has only a vanilla text window and no mouse cursor, so I cannot use it or get out of it.
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Mar 15, 2011
I have done three times clean install for this and still i can't find what causes it.
When i do my clean install and configure my installation, after reboot i can login.
I see the login splash and then, i see a black screen and the only thing i can do is open applications with ALT+F2 command and change TTYS to login as root and i can move my mouse pointer. When i startx with root everything works awesome... Probably i changed something i musn't... Can the option "start everytime with new session" cause it, if yes how can i fix it and if not what can i do?
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Dec 8, 2010
I turned on my Acer laptop and during bootup it seemed normal. After it passed the blue Acer logo, all I could see is a black screen and a black cursor outlined in white in the shape of an X. Thinking it would be a one time thing, I turned it off again.it still was a black screen.
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Jun 1, 2010
When i boot the fedora image from a dvd i'm not being taken to the fedora live system screen, instead i see a bunch a words on a black screen (looks like DOS)...am i having compatibility issues or what? ive tried 32bit, 64bit versions as well as different desktops. does anyone have any ideas? my laptop is brand new: toshiba e205 running windows 7 ultimate..
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May 12, 2010
I can't seem to get Ubuntu to run on my old Dell Dimension 2300. It boots to a purple screen then it goes to a black screen with a load of writing nothing else happens after this screen. [URL] Could someone advise how I can get it to work?
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Feb 8, 2009
I am running Fedora 10 on a Gateway Machine. I tried to install the corresponding drivers for acceleration but it seems to have broken the display. After the loading splash screen, the screen goes black and does not respond to anything. I did manage to see the Grub boot loader by pressing 3 a number of times while booting the machine. Any ideas for how to revert the computer to its normal display so i can try again at getting these drivers working. It is a tad bit annoying not having a display but hell, this distro is already as far as I can see 10x as good as Ubuntu.
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Apr 29, 2009
I am trying to install Fedora10 on a eeeBox, where I understand the graphic card is highly irregular. After the initial loading (the white/blue ASCII-art bar in the bottom) I get a black screen and that's all.If I Ctrl-Alt-F2 to a text screen and, as advised, do "init 3" and then "Xorg -configure" and restart the server with the new config - the same happens. Just a blank screen..
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Jul 19, 2009
why do i get the black screen at install just after when it loads
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Jul 24, 2009
I just did an update of my Fedora 11 machine, and it required a restart. After restart it will not try to boot up or even show a splash screen. The only thing I see is a black screen with a flashing white cursor.Any ideas on what I can check so I can boot up into Linux again.
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Jan 19, 2010
I cant boot fedora, i have installed windows XP and Fedora 12, i can boot XP, but when i try to boot Fedora, it show me boot screen to choose Fedora and Other, when i click enter on Fedora, nothing happens, just black screen :S I tried with "acpi=off", and it doesn't work :/
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May 10, 2010
I just updated from FC 10 to FC 12 via install/upgrade disk, and when re-booted the screen is then black (at the point that it should display logins). I think it may be due to nvidia driver in FC 10 not being upgraded, because I think I compiled it from nvidia rather from yum install. Anybody else have this problem? BTW, it is a dual boot with Win XP, but has never caused a similar problem before.
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Sep 1, 2010
yesterday I updated the system, and that involved kernel 2.6.34.6-47.fc13.x86_64. After rebooting, the progress bar goes fine, but when finished the screen flickers a little and goes black. I can't switch to other terminals via Ctrl + Alt + Fx, so I'm using remote access via ssh. I thought it could be nvidia issue, so I updated kmod modules with rpmfusion-nonfree-updates-testing, and when booting nothing complains, but I'm still getting black screen. Xorg log doesn't seems to complain (no errors (EE)).
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Mar 5, 2011
Running Fedora 14, and when I wake the computer after not using it for a few hours I get a black screen with only the mouse pointer visible. This can sometimes be for a minute or up to 5 or 10 minutes, I'm not quite sure what the issue is. I have the screen saver set to blank screen, and I have the computer set to never go into sleep mode, however the display turns off. I just tested it out with the screen saver only activated and it wakes fine, and then set it to turn the display off after 5 minutes, and it wakes up fine if I try then. The issue is when it has been idle for the night or longer. I am running this machine through a KVM, so I'm not sure if that may have something to do with it. You can see from the output here that the mouse seems to be getting discovered all over every time I switch back to this machine.
[Code].....
This isn't a major issue, but it is very annoying if I want to switch over to this machine to get a few things done and switch back. Also, if I am waiting at the blank screen with the mouse, I can still press ctrl + F2 to access the terminal immediately, so the computer is functional but the GUI seems to be delayed in coming back.
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May 27, 2011
downloaded Fedora 15 Live CD and made a booting live CD with it , everything went Okbut after the first screen " automaticlly boot after 10 s " everything just went creepy and the contrast of my screen has become very very low , I was able to see that unity booted but I barely could see the icons without being able to see anything esle , just dark*darkthe same happened with the usb live version .Im having a " Mageia RC " installed in dual-boot with windows 7 and I have the same problem with it . which means, the distro is there but cannot be used cuz the contrast is very very low
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May 29, 2011
I've installed Fedora 15 64bit version yesterday, first time using Fedora ever, I like it so far, but there's one thing that's bugging me. It's the flashplayer. I'm using 64bit version of adobe flash player called "Square", which work's fine for ....., but when i try to switch to full screen on site warcraftmovies(they're using player Minoto i believe) it's working strange. If I open a new Firefox and I haven't played any other video from ..... for instance, it works fine and switches to full screen no problem, but If i exit full screen and try to switch to full screen again, it will give me only black screen. If i click on the window border of firefox the video comes up again, but not maximized, only normal window. I tried running firefox from terminal to see erorrs and whenever i try to maximize the player it gives me this error
[code]...
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Jun 25, 2011
I upgraded my machine to F15. I was asked to reboot. From that point on, the system will not boot. I get to the blue screen with the 'egg', about 1/3 of the 'egg' turns white, then the screen goes black. No cursor, nothing.
I hit shift to get the Grub menu, tried booting my old kernel. Same result.
I tried burning a F15 live cd and booting that, but I get a desktop background with no mouse, no docks. It doesn't seem to respond to anything I do. I can boot it in the "basic graphics" mode, or whatever you call it, but I would rather not overwrite my entire hard drive with a fresh install.
I have seen references to some kind of recovery mode provided on the live cd that might repair my install without wiping my data, but I can't find it anywhere.
My hardware:
Dual core Atom D525
Intel NM10 chipset
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Jul 11, 2011
I am using fedora 15 on my dell studio 1558 . Sometimes a black screen appears with a cursor blinking when i tries to reduce the brightness of the laptop and somethimes it automatically happens . And i am not able to do anything its just like the blue screen of death as in windows . the only way to get back is by restarting the computer
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Aug 13, 2011
I found a bug, it's due to light the screen, if I start not choose nomodet the screen is very dark, I use the setpci -s 00:02.0 F4.B=00 the screen back to normal, but when I restarted, which continued to setpci. How to fix this,
My laptop infomation:
Acer 4937
CPU: Intel Core 2 Duo T6600
RAM: 2GB
Graphic: Mobile Intel 4 Seri 796MB
I have installed Fedora 15 from USB. If i start without nomodeset then screen startup is black!
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