Ubuntu Multimedia :: Black Screen On Laptop's External Monitor When Specifying Vesa Driver In Xorg

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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Ubuntu Multimedia :: Generic Vesa Driver Xorg.conf File That Will Work With Most Any 1024x768 Monitor

Feb 12, 2010

I am looking for a generic vesa driver xorg.conf file that will work with most any 1024x768 monitor.

This is for a network appliance and our field people have many different type of monitors.

This product will mostly be used "headless" but sometimes our field people will plug in a monitor.

The intel driver will not even start x without a monitor plugged in so I found it necessary to go to the vesa driver.

Code:

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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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Dec 4, 2010

Was trying to play some new games, so was trying to install the ati drivers for my x15xx or something card.

anyway i am using ubuntu 10.10, so was having to try force them, using 9.10 config or something.

anyway got it installed, restarted and I get black screen have been trying to go back to "vesa" drivers or something. but been having no luck

I do not have a "/etc/X11/xorg.conf". and I cannot seam to make 1 using stuff like aticonifig --initial --input=/etc/X11/xorg.cong or anything like that

I am really stuck, even using dpkg-reconfigure or something didnt make the X11 conf

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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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Jul 15, 2010

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Feb 20, 2011

With the upgrade to Squeeze and the 2.6.32-5-686 kernel, my Dell GX260's 82845 video chip suffers from the documented intel driver bug (freezes within a few minutes). I tried to fall back to the vesa driver, but am only able to get 640x480 resolution. The monitor is an LG L1720P.

I turned off kernel mode setting (via /etc/modprobe.d/i915-kms.conf), and modified xorg.conf -- added Modeline entries (from gtf) and
additional Mode lines to try to force resolution. Relevant portions of xorg.conf, dmesg and Xorg.0.log are shown below.

xorg.conf:

Code:

Section "Device"
Identifier "Generic Video Card"
Driver "vesa"

[code]....

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Sep 24, 2010

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I also tried setting up the resolution at 1920x1080 on the TV and kept the default resolution on the monitor as 1280x800, and as you would expect displays the entire desktop in a smaller version on part of the tv. However, the desktop is still offset, leaving the top and left margins cut off. So, perhaps I need a way to offset the screen? Is this possible in xorg.conf?

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Apr 27, 2010

Pretty much what the title says.. a few more details:

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I read another thread on this forum from a user who is using the same platform (Intel HM55), and I got stuck at the last point (can't get Intel xorg driver to install).

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Apr 3, 2011

Just did a fresh install of Natty B1 (previously had alpha 2).. I noticed this issue w/ A2, as well.. plugging in the exterminal monitor (via mini-displayport-to-vga connector) will do the following:

1) turn the screen on the laptop's display entirely black (but not turn it off).. i can move and see the mouse cursor.. but everything on the window appears to not rending or "painted" black..

2) external monitor never becomes active..

the only way to recover is to kill/restart X or reboot after disconnecting the extmon.. having extmon plugged in from boot produces the same results (and it doesn't seem to ever become active during boot up). sometimes this won't happen right away if i plug in the external monitor.. but opening the Monitors system prefs dialog will definitely cause (or detect displays) ,etc I waited to see if the issue would fix itself w/ the beta update, but it hasn't.. Any other 8,1 owners out there that can verify this issue? My (totally uninformed) guess is that it's due to differences in the display/gfx hardware and thunderbolt integration(?)

(I've seen a verification verifications of working-out-of-the-box.. but they were from 8,2 and 8,3 owners (which have discrete graphics cards))... If anyone's gotten this to work with some config stuff, I'd love to see that as well (since the wiki page for 8,1 says it works ootb). If someone could let me know where I should look to capture error output when the above issue occurs, that would be awesome.

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Jul 3, 2010

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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.
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3. If I press F9 to increase brightness, the brightness icon appears in the monitor, but it is stuck at the minimum.
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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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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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1280x800 50.0*
1024x768 51.0 52.0 
960x540 53.0 

[code]...

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Feb 21, 2010

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Ubuntu Lucid
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Tue Jun 21 23:07:12 AKDT 2011: performing suspend
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[code]...

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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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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.

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[Code]...

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