Debian Hardware :: Laptop Screen Goes Blank With External Monitor
Mar 28, 2016
I am running Debian 8.3, and I'm running Gnome 3.14.1.I have an external monitor plugged in with HDMI, and while Linux is loading both screens are on duplicate. Once the GUI kicks in, only the external screen works, so I have to enter my password blindly. Then, I open a terminal and run
Code: Select allsudo echo 950 > /sys/class/backlight/intel_backlight/brightness
and the laptop screen turns back on.
I'm wondering: Is there a way to streamline this so that it happens on boot, but after GNOME loads?Or: Is there a better method to solve this?
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Aug 7, 2011
I am having problems getting my external monitor to work. When I plug in the monitor, both the laptop screen and the external monitor go black. When I unplug the monitor, the laptop screen works again.
When I startup with the external monitor plugged in, neither screen works or teh computer hangs or something.
I have had the external monitor going on a couple of occasions. I did manage to configure my monitors through System Settings > Display. I turned off the laptop monitor as I just want to use the external. But after rebooting, things didn't work.
I have a Thinkpad E420, Fedora 15
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Sep 22, 2010
I recently installed Debian, using the amd64 Network Install .iso. I'm using XFCE4 as my desktop environment, and everything is working well... on my laptop's screen.
My desired setup is to have my laptop sitting on a well-ventilated shelf, closed, and to have an external monitor be my main monitor. I want this because I'm using my laptop as my "home" computer, so it never moves, and I don't like the keyboard/trackpad. My laptop has a VGA output, and I can get my desired setup on my Windows partition (not stating a preference ; just that the hardware CAN do what I want it to).
I've been working my way around the Internet for a few days, now, and I've got the commercial NVIDIA driver installed. If I run sudo nvidia-config --twinview I can get my external monitor to be part of the display, which is great, but it's part of a dual-screen monitor setup, which is not what I want at all, because (a) XFCE's multiple virtual desktops are good enough for me and (b) my graphics card is integrated, and I'm trying to squeeze every drop of performance out of my laptop that I can (1 gig of RAM; the less that my graphics card eats into it, the better). Plus, it'd be annoying to accidentally drop something on my laptop's screen, and then have to dig it out of the shelf in order to undo it. I'm not saying that I'm consistently clumsy, but I'd eventually end up doing it.
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Jul 3, 2010
The laptop is a samsung X30 and i spent days trying to install ubuntu 10.04 unsuccesfully as there was no clear picture on the screen, just a black and purple splodge. I then saw a post on these forums discussing the default resolution of ubuntu and how it is incompatible with some machines so via VGA cable i connected it to my TV and sure enough i could see what was going on and finished the installation process. I assumed that once ubuntu was fully installed i would be able to change the resolution using the monitor preferences but none of them worked. I am now faced with the problem that unless plugged into the TV i have no picture on my laptop, does anyone know why my laptop screen wont work with ubuntu and how
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Jul 2, 2010
I'm a new user and recently installed ubuntu on an old samsung laptop, during the installation process i couldnt see anything on the screen and came to the conclusion that ubuntu's default resolution was different to that of the laptop screen so i plugged it into my TV and sure enough it worked however i still only have a picture on the tv, ive tried all the resolutions available in the 'monitors' box but nothing, does anyone know how to fix this?
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May 10, 2011
I have an HP Pavilion dv9000 which I would like to use completely with any Linux OS. I have tried to install Linux Ubuntu 10.04.1 but it appears that it doesn't recognize the external monitor and ends the installation. I have a clean hard drive that I could install but I do not know which of the two drives I should replace. I can only get into windows in safe mode and I would think this may have something to do with the problem, don't no.
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Jan 16, 2010
I have an Asus z9100 laptop with an Intel 855GM integrated graphics chip, which is running Karmic (the purpose of the laptop is to be a MythTV frontend so my understanding is that it needs to run 9.x in order to connect to the MythTV 0.22 backend - I have installed and configured this using the installable Mythbuntu package) and the laptop is subject to this bug which causes random freezes:
[URL]
So, following advice for similar freezes I've seen, I have added the following options to my grub menu.lst on the kernel line:
nolapic nomodeset
and I have edited xorg.conf so that it makes use of the vesa driver instead of the Intel driver. This results in no freezes and if I wanted to watch Myth on the laptop screen I'd be squared away. However, the laptop has a damaged screen so the point was always to output the signal to an external monitor via its VGA out.
When I attach the external monitor and boot with the setup as described, the external monitor is never detected. But I noticed that if I remove the "nolapic nomodeset" from the kernel boot line, it is detected. However, signal is only output to it during the earliest part of boot (when the Ubuntu logo is in the center of the screen before the full-screen graphic with the animated progress line), after which the external monitor goes black and all the display output goes to the laptop screen. The external monitor power button is still lit up green as if it has been detected and is receiving signal, but it's just a black screen.
get the signal out to the external monitor after the initial part of the boot process, using the vesa driver? Here is the current state of my xorg.conf:
Code:
Section "Device"
Identifier "Configured Video Device"
Driver "vesa"
EndSection
[Code].....
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Jan 2, 2010
I have a netbook (Acer Aspire One) I'm running Slackware 13. and usually, I prefer to connect an external monitor. When I switch my machine on with the monitor connected, the display is duplicated on both screens and since I just want the netbook's screen to be off and only see the display on the external monitor, I can doxrandr --output LVDS --off
Great! However, it's a hassle to do this every time I log in and I'd like to automate the process if possible. I did some googling and I found that if you want to automate xrandr commands, you can put a script in /etc/X11/Xsession.d/ (see this). I wrote the following script to automate my xrandr commands and since the Xsession.d directory didn't exist, I tried creating it. The script was called 45custom-xrandr_settings, as the one on the RandR wiki is called the same.
Code:
#!/bin/bash
# Check whether the external monitor is connected
[code]...
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Jun 4, 2010
When i turn on my monitor the screen goes blank, but the 'on' button is lit up. Any ideas of what the problem could be?edit: When i turn off and turn on my monitor, it displays what's on my computer for a couple of second and than the monitor turns off again.
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Mar 14, 2010
Last Thursday, 3/11, I installed a new mother board (ASUS M4A785TD-V EVO), AMD Athlon II X4 Processor, 4Gig DDR3 ram (RIP JAWS), 1 SATA DVD drive, along with my 2 IDE HDD's. The display was OK during BIOS review, and boot UNTIL it came to mounting x-graphics, at which point the screen went black, and a display message came up saying Out-of-RangeHf: 30KHz-70KHzVf: 50Hz-90HzCurrent Frequency:90.3KHz, 60.0Hz.
Does anyone know what is causing this? I mean, is there no way that Deb 5 X86 is going to run on a quad 64-bit system, or can something else be wrong? Before changing hardware, I had seen indications that this system was backward-compatible to older systems, and the more in depth study I've done since seems to verify this.y be, however, that I completely mis-understand what I am reading - this is all pretty new to me.
I tried booting into Debian 4, Libranet 3, and Linspire 6. They all complained loudly, but differently, about x being inoperable. I can't tell you how they complained because I can't go back and check them. THAT is because, in BIOS, I was testing the system with all the different options for "Internal Graphics", to see if one would work. One of these options was "Disabled". Oh-ho-ho! BAD MOVE!!! it's disabled, all right, including BIOS! I can't believe it. There was no warning, whatsoever. I assumed no engineer in his right mind would allow that option to lock out the BIOS without SOME kind of warning. I'm going to try to call ASUS tech support tomorrow to see if they have a solution, but if anyone knows how to reverse this, please let me know. I suppose the only answer is a separate graphics board. But I don't want to get that if I can't use this MotherBd.-processor setup.
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Feb 26, 2011
I'm using a dell latitude d630 with an nvidia quadro 135M card. I'm able to suspend without any problems while running the X server. If I try to suspend on console without the X server running, the laptop wakes up to a blank screen. The screen remains blank and my only resort is to type sudo halt (with the screen off).I'm using the proprietary nvidia driver with the nvidia-kernel package on testing.
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Aug 17, 2011
My software and hardware information are as follows. I have Fedora 12 and KDE 4.4.5 installed on a Dell Vostro 1500 laptop. I believe it's a 64 bit processor; it's an Intel Core 2 Duo CPU. The external monitor is a Dell as well.
My problem is that my system does not seem to be detecting an external monitor that I have connected. Everything else is working just fine; however, I would like to have the option of attaching an external monitor. When I plug the external monitor into the laptop, the external monitor remains black and appears to be in power save mode. The results of xrandr -q (with or without the external monitor attached: it doesn't appear to change) are as follows.
Code:
How can I get my laptop to recognize that the external monitor is even connected? Let me know if I can be more specific or provide additional details.
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May 7, 2015
Where the script is for Gnome 3. When I plug the HDMI cable, the desktop expands to include both, but disables the backlight on the laptop monitor. I have to restart gdm3 or the laptop for the brightness control to bring it back up. First, why would it turn brightness to 0, and how do I change the default of that so it stops. I plug and unplug the HDMI regualarly while I wait for a new desktop and the laptop has to pull double duty.
I just switched from Ubuntu 14.10. It never blacked out a screen on plug in or removing. That means that there must be some way to do it, however, it used Unity and this is Gnome 3.
I installed KDE. It works as well. I will use it for now, but would like to get Gnome 3 to work. My default is gdm but I think I saw I can switch it to kdm.
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May 17, 2010
After the login screen, my laptop screen is active but the external LCD monitor hooked to my laptop goes blank which was active to that point.
Here are quite a few details which might help you in diagnosing the problem
alt + clt + f1 takes the monitor screen to command line but alt + clt + f7 fails to bring it back to GUI. The monitor just freezes!!
Contents /etc/X11/xorg.conf
# xorg.conf (X.Org X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
[Code].....
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Apr 19, 2015
I have a laptop and an external monitor connected via displayport. I can configure both displays via settings with correct resolution and arrangement. However, this configuration is not sticking, and every time I shut down the laptop or close the lid I will need to fight with black screens and more to bring the same configuration again. Basically, it seems that the monitor is "stealing" the primary role to the laptop's native screen (I have it configured as secondary, but also being primary the configuration gets messed).
After many trial & errors, this is the routine I have found to make things work every time I boot / awake the system:
1. Boot. Laptop's display shows the booting sequence.
2. When the login screen should appear, laptop's display goes black, monitor shows background.
3. If I press F9 to increase brightness, the brightness icon appears in the monitor, but it is stuck at the minimum.
4. The only way to leave this point is by pressing F7 (project screen) and then F9 again to increase brightness. Then the laptop's screen does light up.
This is when I'm lucky. Sometimes the configuration goes mad and I get mirrored displays and different resolutions, without touching the settings myself. Also, if I unplug the displayport I run the risk of getting stuck with a black screen in the laptop, without any way of recovering the GUI other than rebooting (Ctrl Alt F2 will still show the command line screen).
My system is Debian 8 testing up to date, running in a Lenovo T430 with Intel components. I'm not sure the monitor is relevant here, but in any case it is an Eizo CS240.
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May 26, 2011
Previous Fedora releases allowed me to connect to my external monitor via an HDMI-DVI cable to use as my main monitor from my laptop. However, after I did a fresh install of Fedora 15, I have this problem that when I login to gnome 3, both laptop screen and external monitor go blank. I cannot ctrl-alt-f2 to go to terminal. I end up having to ssh from another machine and reboot. Each time, the reboot doesn't even work since I have to go and kill Xorg before it starts to reboot.plymouth and gdm seem to be fine and show up the external monitor. It is only when I login to gnome3 that I get the blank screens.
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Aug 20, 2011
I have installed Fedora 15 64bit live with no apparent errors and I get to the "Welcome" where it says just a few more steps before I can start using Fedora after filling in the details hit the "Forward" button in the lower right hand corner. The problem is I can't see the forward button, its like I need to page down or something but everything I have tried isn't working. I then decided to use the Fedora 15 64bit DVD thinking a driver was missing or something and it is still the same issue. I am using a Thinkpad T61 laptop with an external monitor and the external monitor goes blank when it boots to the welcome screen, but I can scroll over to the external and see the mouse cursor on the external. It seems that if I could see the welcome screen on the external monitor that I might be able to see the "Forward" button. Both installs went without a hitch, the DVD install found my internet connection and downloaded a bunch of stuff and the DVD install took about two hours to complete, again with no errors reported. I hope I am not being daft here and missing something obvious.
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Sep 6, 2010
I have slackware 13.1 installed on my laptop and use kde.I just bought a new external monitor 1680 X 1050. The laptop's monitor is 1280 X 800. From KDE i configured laptop's screen to be inactive and the external monitor at resolution 1680 X 1050. When i boot and enter KDE both monitors are activated, ican't understand their resolution. Then, just when i enter system configuration-monitor-monitor configuration the laptop's monitor automaticly turns off. Then i configure the external to 1680 X 1050 resolution. This happens every time i have to enter slackware. How to setup my xorg.conf file. You can see it below:
[Code]...
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Feb 15, 2011
I have been using Ubuntu for a while now on my netbook, however I have an older HP dv5 laptop that hasn't been used in a couple of years that I would like to format and install a linux distro on. Problem is that it has a very broken LCD screen and I had been previously using an external monitor with it. I had tried to install Ubuntu 9.04 on it at one point but could not progress very far into the installation due to the external monitor. I had also tried using the non-graphical installer but had little success with it as well.
I had thought of removing the HDD from the laptop and putting it into another of my laptops and installing it that way, but the specs are different between the two laptops and I figured that it would not work properly once the HDD was switched back to the older laptop. Is there any way to use an external monitor to install a newer version of Ubuntu? or perhaps is there another distro that is easily installed using an external monitor? My plan is to eventually remove the broken screen all together and only have the external monitor connected, the broken screen is a bit unsightly.
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Mar 1, 2011
I am looking for a way to switch quickly and easily between my Laptop Display and my External Monitor, in Windows I had it configured so that when I plugged my Monitor in it would switch to that and when I removed it it would switch back to Laptop Display. From what I have tried it looks like this isn't possible with Linux, but I would like to get to the stage when I can click an icon to switch (or 1 to go to External and 1 to go to Laptop) My Laptop has an ATI Mobility Radeon HD 4500 Series Graphics Card and I have so far noticed the following issues.
1. If I use the Gnome Monitors instead of ATI Catalist Control Centre it seams to cause some strange issues include confusing Linux on what the max screen res supported by my External Monitor is.
2. When I try and enable/Disable either Display or change Resolution, I am told that I have to reboot before the changes take affect.
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Feb 23, 2010
I'm a newbie so apologies if there is a trivial answer to this.
I (maybe somewhat rashly) tried to connect my tv to my laptop (Dell Latitude D400) running Ubuntu 9.10.
I plugged in the cable, went to the System>Display menu, where it had detected the model and make of tv (Samsung 19" LCD) (I think the resolution was 1650 x 1050 or similar). I clicked the box to activate the second monitor with the "Virtual resolution" adjusted. It told me to log out then log back in.
I accordingly logged out but then couldn't log back in. It had evidently changed the resolution not only on the 2nd monitor but also on the laptop monitor. A box was visible on screen but completely illegible/unclear since the laptop monitor couldn't display that resolution.
After a few restarts and button pushes it is now restarting at a terminal (I enter my username/password at a command prompt on an otherwise blank screen rather than the graphical interface loading up).
Question: are there any commands that could change the resolution back to its original settings then restart the Ubuntu graphic interface? Some thing similar to the "load with last known good configuration settings" option in Windows maybe.
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May 13, 2010
I've been unable to connect an external monitor to my laptop running 10.04, even though the resolution and framerate are right. The monitor says something like "unsupported video settings".
In other news, I put the live cd into another computer which relies on a monitor and after the very first screen with the two logos at the bottom, the monitor decides to go to sleep. I try with another monitor and it just seems to have to feed. This is the more important problem, but I wonder if there isn't some built-in problem with 10.04.
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Dec 23, 2010
I don't know if it sounds weird but I've been trying for weeks with no result. I want to plug my external monitor through my laptop's vga plug, close the lid and work on my monitor instead of the laptop's monitor. I looked through the gnome power management settings and when the laptop lid is closed it can only suspend, blank screen, hibernate or shutdown. I can plug my monitor and I have clone displays and it works fine but I can' find a way to shutdown the laptop screen without shutting down the vga outlet. Its a brand new Acer aspire 5734Z with a 15,6 inches screen (wich is why I want to plug in my 19 inches monitor and work on bigger screen)
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Jun 11, 2010
I've got a laptop running Backtrack4 and an external tv/monitor. Is there a program/command/configuration file that I can use to allow my laptop and monitor to connect with one another via HDMI?
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Jul 7, 2010
I am having a Dell ST2410 LCD and a laptop IBM.I want to span my desktop so that some portion is on laptop and some on external monitor. I tried xdmx but it did not worked.
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Feb 16, 2010
I just replaced my PSU and now my computer is not booting up. To make sure that my new psu is not causing the problem, I put my old one back in but it still doesn't boot up. My system powers on, motherboard led glows, the processor starts running and so does the graphics card. The monitor stays blank though. Nothing shows up on the monitor. Just a blank screen with the monitor led blinking. What could be the problem ? It was working fine before I replaced my psu.
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Jul 31, 2011
Natty install -- ATI 9800 is the video board.
I installed Natty on it with the machine hooked up to a Samsung LCD with a 1680x1050 resolution over DVI. No problems at all. I want the box to pretty much output MP3s and web video, so I'm not needing much. When I take the box and hook it via DVI to my LCD, I get a blank screen on boot up. I try sticking the natty CD in it, and I get a blank screen trying to live boot it too. The LCD doesn't do 1680x1050, so I brought it back to my Samsung and set the default resolution to something nice and safe: 1280x1024. Still the same behavior. When I take splash mode off, I see a "load fallback graphics devices fail" error as it is booting up. Hard for me to think the driver is the fault here when it works on my over LCD just fine.
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Jun 21, 2010
I have a new ubuntu 10.04 install, it is the third that I have done recently. On this particular install (unlike the others) the screen goes unexpectedly blank at seeming random intervals and any motion restores the screen. It is acting like a screen saver with the blank screen option set. My screensaver preferences are set to use a screen saver 'for a 7-minute idle period. The lock screen option is off. For AC power management never is chosen for "put computer to sleep" and 30 minutes is chosen for the "put display to sleep" option.
This is a compaq presario desktop.
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Mar 8, 2011
I'd like to solve a little problem that I have connecting my notebook with an external VGA monitor.Everything seems to work fine, but when I close the laptop monitor, also the external monitor shuts down.I've tried to find different energy-saving setting for laptop display and external monitor. with no luck...My video card is an ATI Radeon Xpress 200M. On the ATI website there is no catalist control center for linux. (It would be very useful). So, for now, I can only use the display options on the panel.
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Nov 23, 2010
I have Dell Vostro 3300 with Intel HD integrated graphic card and Samsung SyncMaster 2343BW external monitor.
This is the output of xrandr:
It runs on 2048x1152 full resolution, however, the picture on the monitor is blurry, it vibrates and looks like old TV with interlacing.
I tried to disable output to LVDS screen on laptop using xrandr but it doesn't help/
Previously I had HP laptop with integrated Intel and OpenSuse 11.0 and the external screen worked normally.
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