Ubuntu Installation :: Monitor Is Not Detected After 10.10
Oct 28, 2010
I just upgraded, and when I rebooted I could see that it was booting but after the initial phase I got a blank screen.
I went to prompt and tried xrandr to which I got the error : Can't open display.
What does that mean, and how do I fix this? I guess that my monitor is not properly identified or is not identified at all.
Does anyone know what I can do?
Went to /etc/gdm to find xorg.conf but it is not there. In etc/X11 I have an xorg.conf
The contents are :
Section "Monitor"
Identifier "Configured Monitor"
EndSection
Section "Screen"
[Code].....
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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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Jun 1, 2010
So I have a Samsung monitor at work (model 2343BWX) that I use in addition to my laptop screen. My computer is a T500 think pad. When I boot into ubuntu 10.04 from previously shutting down the computer in ubuntu I can't detect the monitor. If I however boot first into windows (I don't even have to enter my password, I can just press shutdown on the menu instead of logging in, and then boot into ubuntu) and it auto detects the monitor.
I have tried going to System -> Preferences Monitors and clicking "Detect Monitors" it doesn't work. Anyone know how this could be?
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Jul 7, 2010
I have installed (successfully) Ubuntu 10.04 ppc on my powerpc g4 mac. 400mhz, 1g ram. Its the blue model. It works great, but it does not detect my monitor, and I can not change the settings past 800 X 600. I am using a Dell 19 inch monitor. Analog input (not DVI yet) resolution 12080 x 1024 60hz. I believe I need to change the info in the xconfig file (but I don't know to what or how), and I may not be saying that correctly.
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Jul 11, 2010
My Ubuntu server box, has a Iiyama prolite LCD, 22", 1680x1050, that had not problem at all since... I can remember. Since yesterday, after a restart, xserver started in 640x480, with only 320x240 as alternative.
I have latest nVidia drivers installed, and the main difference with last week, is that now, Display Configuration says CRT-1, unknown instead of Iiyama.
I've tried.
1. Uninstall xserver and reinstall.
2. dpkg reconfigure
3. Uninstall nVidia and come back to original Nouveau.
[Code]...
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Oct 31, 2010
I'm running 10.04 as a DVR (mythtv). If the computer boots with the TV off it won't detect the settings, and when I turn the TV on nothing displays. I have to ssh into the computer and reboot it to get it to detect the display.Any idea how I can go about solving this? How can I disable autodetect and force it to use a specific setting?
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Feb 19, 2009
I install the debian on my PC, but the monitor is not detected or not adapted ( while it is for linux CD live, and windows XP). it gives the following errors :
I want to use the file xorg.conf given by CDlive ( sidux for example) and copy it in the /etc/X11 of my debian, is it enougn or I need ohter configuration ?
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Sep 29, 2015
Today I set up the energy settings like that:
10 minutes (screen), 20 minutes for suspension.
After around 30 minutes, I came back and switched back on the pc.
The primary monitor (VGA) was not detected, even after a system reboot.
More info about my pc:
Debian stable 8.2, kernel 3.16.0-4-686-pae.
I have an Nvidia card, but currently I am using nouveau drivers.
Two monitors: VGA (primary) and DVI (secondary).
Later I could get my primary monitor to work by switching tty (ctrl+alt+f3 and typing "startx" in the console).
I guess this is related to Xorg configuration (/etc/X11/xorg.conf is empty), but I am not really sure.
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Dec 14, 2010
I have a ViewSonic (VA1703w) LCD and Fedora 14 is not detecting it. I want to change the resolution but it is fixed to 1024x768. I have also tried to add the resolution in xorg.conf but no effect.
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Nov 13, 2015
I noticed that Debian 8 has a significant bug related to detecting presence of display(s). Today, I woke my computer from sleep while the LCD monitor was unplugged from power (the monitor is connected via DVI) then I powered the monitor but nothing was displayed. Next, I connected another monitor via HDMI and both screens started working. However after disconnecting HDMI cable from the second monitor the first one with DVI stopped showing anything. The conclusion of this situation is that HDMI monitor must be connected all the time.
I thought that this is caused by graphics driver, but I experienced the problem on different machines, one with nvidia driver and DVI, and the second with default free driver and DisplayPort.
I just checked that this is related to KDE. After switching to console using ctrl+alt+f1 the screen turns on, but when I am going back via ctrl+alt+f7 the screen disappears.
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Aug 16, 2015
Setup:
I'm using i386 Jessie Debian, have an i7 Intel processor and Gtx 745 4gb NVidia GPU.
I am running with nomodeset due to blurring issue but issue occured without nomodeset too.
Problem:
When I start Debian with just a monitor in the HDMI slot it doesn't recognize the monitor and keeps the monitor at 1024x768.
When I start Debian with monitor in both DVI and HDMI slot it only activates the DVI monitor (with proper resolution). PC has no VGA I have no DP cable.
xrandr:
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 640 x 480, current 1920 x 1080, maximum 1920 x 1080
default connected primary 1920x1080+0+0 0mm x 0mm
1920x1080 0.00*
1280x1024 0.00
1024x768 0.00
800x600 0.00
640x480 0.00
Which is my dvi monitor, no other screens detected. Is there any way to get the HDMI to run properly?
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Oct 20, 2015
My system can't seem to detect the external monitor that I've plugged into my laptop using and HDMI cable. The monitor works when I'm booted into Windows so I know that it isn't a problem with the monitor or the cable.
When I run xrandr I get.
Code: Select allScreen 0: minimum 320 x 200, current 1600 x 900, maximum 8192 x 8192
LVDS1 connected primary 1600x900+0+0 (normal left inverted right x axis y axis) 310mm x 174mm
1600x900 60.00*+ 39.99
1440x900 59.89
1360x768 59.80 59.96
1152x864 60.00
1024x768 60.00
800x600 60.32 56.25
640x480 59.94
VGA1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
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Jul 30, 2015
I've recently installed Debian v8.1 and installed Nvidia driver 340.46. In nvidia-settings I am able to enable my second monitor and enable it/set it's position..etc. My second monitor is not being detected in Debian Display and is 'on' but only showing a black screen. I've tried researching and implementing various 'fixes', but I'm not having any luck.
I'm running dual GTX 570's with a monitor plugged into one each (DVI). I noticed in my xorg.conf under Section "Screen" I have an option "MultiGPU" "Off"; would this be part of the issue?
I've tried:
- purging all nvidia drivers and re-installing
- installing different versions of nvidia drivers
- add nomodeset in grub
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Jul 26, 2011
Today my desktop reverted to 1024x768 resolution immediately after init. I tried changing it back but only 1024x768 and 800x600 are listed as supported in the display settings, even though my monitor supports resolutions of up to 1360x768. Rebooting the system did not solve the problem.I'm running Fedora 15 x86_64 on kernel 2.6.38.8-35 with the proprietary nvidia drivers of version 275.09.07. My monitor is a Samsung SyncMaster 933n. nvidia-settings is apparently not detecting it correctly, it thinks I'm using a CRT monitor.I was actually in this exact same situation a few months back, but it kind of went away on its own, so I didn't mind too much. So, what could be causing this, and what can I do?
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Aug 20, 2010
I haven't manually configured XWindows in a very long time, so I'm not very certain what I need to do anymore. Hopefully someone can provide some guidance. I just built up a new system that I'm trying to connect to a 47" LCD TV that provides a VGA connection. When the computer starts booting all of the text comes up just fine (1 or 2 characters on the left are chopped, but otherwise fine). When I tried to run the installer for CentOS5.5 I ran into a problem. The monitor(TV) wasn't getting a proper signal to display XWindows. In an effort to keep going, I reconnected the PC to an old monitor and did the install from there. That worked no problem. I ran all the latest updates hoping that maybe this was fixed in a patch. I then shutdown and reconnected to my TV. no luck. When it starts XWindows the screen doesn't display anything. I've tried fooling around with modifying the xorg.conf and adding an explicit "Monitor" section and set it to 640x480 with a VertRefresh of 60 (which is supposedly an acceptable format), but no luck. Can anyone provide any guidance on how to solve this problem. BTW I do know that the VGA connector on the TV works just fine because I can hook up my laptop (Windows XP) to it.
H/W Monitor: Olevia 747i (when nVidia on my laptop detects it, it is reported as 747-b11) Motherboard: Biostar MCP6PB M2+ Motherboard - Socket AM2+, �ATX, Audio, GeForce 6150 Graphics, SATA, RAID Graphics: Using the integrated GeForce 6150 chipset
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Oct 6, 2010
Installed fedora 13 to hard drive on fresh partition,installed ok,ran updater,installed all updates.all working ok but fedora is not able to detect my laptop monitor.i am unable to increase resolution.stuck on 800 * 600. when a window in open and i need to click at the bottom of the window i cant because it is bellow the screen.I went to [URL] to look for drivers.it only shows display drivers for red hat 7.0.i tried them but wont install.is thier drivers i can use for fedora 13,or a way to force resolution into 1024*768.
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Jan 18, 2010
OS: Fedora 12
Video card: ATI Radeon 9200 series
Monitor: ViewSonic 19"
I installed Fedora 12 configured Gnome automatically. Generally default settings. My monitor was connected directly to the video card and all was good. My video card was detected and my monitor was detected as ViewSonic Corporation 19" and I can set the screen resolution to 1280x1024. I had no xorg.conf file, as it seems that Fedora 12 does a great job of PnP to just set everything up.Now I go and complicate things by hooking up my monitor through a KVM switch. All of a sudden my monitor is "Unknown" and the best resolution I can achieve is 800x600.
Sure, I could go and reconnect without the KVM, but I want to be able use it.Is it possible to edit xorg.conf to tell it "Trust me, just use 1280x1024 at 60Hz even though you can't figure out what the monitor is"?
I tried a number of the posted suggestions to generate xorg.conf files but none of them get me what I need. A simple sample file listing that does the minimum is greatly appreciated (I can experiment from there once I get a basic setup working).And can someone explain if it is X or the ATI driver that is getting confused by the unknown monitor type. It helps to know what is actually going on in addition to a fix (so I can figure it out myself in the future). Thanks!
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Oct 11, 2010
I installed a new copy of F13 this morning on my fairly new laptop.32 Bit Intel, 3GB Memory 120GB HDD. The problem I've got is that my Monitor/Graphics card is not getting detected and as a result I'm getting a horrible Resolution/Refresh rate. When I run
lspci | grep VGA
I get this 01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS] 771/671 PCIE VGA Display Adapter (rev 10). how I can get my monitor/graphics recognized to work in the Full Resolution.
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Jun 18, 2011
I am new to Ubuntu. I installed Ubuntu 8.04 and it detected my Acer monitor AL1716 correctly and it works fine. However when I installed Ubuntu 11.04 it shows the monitor as " Unknown Monitor" and the maximum resolution is 1024x768 and I cannot set the native resolution which is much higher. My motherboard has Intel 845G chipset and built in graphics. I tried Ubuntu Software Center, but couldnot solve the problem.
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Feb 11, 2011
After lot's of research i still can't find any solution to my problem, that's why i'm posting a message here.So, it's been few days now that i'm trying to install ubuntu 10.10, with the live CD, but each time when i must choose where to install it or how to make partition, it just tell me there is no hard drive..(i have two 1 TB sata hard drive )So i tried many things, GParted doesn't find my hard drive either, they appear in the bios (i can run windows), try to uninstall a raid program that might hide the hard drive, but it didn't work either.
So i came to see that i had Marvell 9123 which seems to be a SATA controller, and few people seems to have some similar issue with that Marvell stuff..I'm quite desperate now.. i tried to install ubuntu on a USB drive but my computer just doesn't boot on it (i tried this method for the sb drive URL...
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Mar 4, 2010
I am just getting started with Ubuntu and love it so far. It has breathed new life into an old Compaq Presario V2000 and once I get up to speed on it I hope to start running it on all the rest of our machines.
The only major problem I am having is that none of the USB devices I have plugged in are being detected. From what I have seen online I should be getting a notification and should be able to view the devices at Places/Computer but so far, nothing. Googling this problem it appears that individual devices often don't work but I could not find anything on all USB devices not working.
Any ideas as to what I am doing wrong here?
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May 5, 2010
During the installation of Ubuntu from a LiveCD my harddrive doesn't seem to be detected. I cannot create partitions. I used Gparted to shrink my Windows partition. There's 23 GiB of unallocated space, but it's not being detected.
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May 23, 2010
I've upgraded a P4 system from 8.04 to 10.04 and it hangs on boot saying it can't find root (/dev/md0).ALERT: /dev/md0 does not exist.I've added rootdelay parameters in case it was a timing thing and cat /proc/modules shows raid1 etc. (although no md ??).I noticed the md and raid1 modules weren't in the /etc/modules and /etc/initramfs-tools/modules - so i added them and did a: mkinitramfs -o <name> 2.6.32-22-generic
Oddly at the initramfs prompt when I type "reboot" I see it flash up with syncing md devices (or similar) just my /dev/md0 and /dev/md1 are not in the /dev partition (although the individual devices are - /dev/sda1 etc.).
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May 15, 2011
I tried to install 11.04, but the partition tool shows no HDD. If I try to run Ubuntu from the CD, I can explore the HDD but the partition tool in the installation program won't find it. What can be wrong with my Promise SATA controller
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Jun 17, 2011
Ubuntu 11.4 installed on 400GB SATA Drive.I have 2 other SATA HD's and only 1 is being shown in Ubuntu.The missing drive is Fat 32, and all the drives are visible in bios.
#1 what steps I need to take to find out why Ubuntu is not detecting it?
#2 how to add the drive to Ubuntu?
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Feb 6, 2010
Working on a friend's PC, which was previously running XP and got a very nasty virus infection. I convinced him to try Ubuntu, showed him the interface running on my own machine and he was hooked. Backed up all his data to network, completely erased the hard disk and install Ubuntu. Sounds easy, right?
Installed 9.10, it didn't detect the video card and xorg.conf was missing from /etc/X11. After some messing around trying to get it to work, I realised that the sudo dpkg-reconfigure -phigh xserver-xorg command wasn't working properly and didn't produce the menu shown in the screenshots. After some digging I found that this was a bug in 9.10, so to make the job easier, I wiped the drive again and started again on 9.04.
With 9.04, at least the xorg.conf file was there, but had no entries under configured video device. I tried adding "vesa", "via", "openchrome" (all on separate attempts), all to no avail. I retried the dpkg -reconfigure command above. still no menu.
Now several days into this "easy" install, I rolled back to the LTS release (8.04 - hardy) and installed that instead. Still no video card detection, and resolution is obstinately stuck at 800x600. Tried the same string of tests again, and now admitting defeat The relevant output from lspci is: 01:00.0 VGA compatible controller: VIA Technologies, Inc. VT8378 [S3 UniChrome] Integrated Video (rev 01)
The output from xrandr is:
Screen 0: minimum 640 x 480, current 800 x 600, maximum 800 x 600
default connected 800x600+0+0 0mm x 0mm
800x600 60.0* 56.0
640x480 60.0
[Code]...
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May 2, 2010
trying to install 10.04, once i reach the dialog where i'm supposed to select partitions for mount/install, the installer reports my HDD is empty. it wants to create a partition table and proceed from there.in fact, my 1TB disk is 50% full and contains 10 partitions, including /boot /home, swap (which i wanna reuse) and 2 other OS partitions. these partitions do show up when running nautilus in 10.04 live, also "fdisk -l" shows them - the installer does not.
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Jul 17, 2010
About a month ago I did a clean install of Kubuntu Lucid. I believe it was after that point I was unable to run other LiveCDs without some problems -- I first noticed that swap partitions failed or weren't detected. It appears that partition managers such as gparted, fdisk, etc cannot detect my partitions and interprets my hard drive as "unallocated" (this has been tested with multiple LiveCDs). However, as far as I can determine, all the LiveCDs with applications for mounting drives and HD backup ARE able to detect the partitions.Furthermore, when I am in Lucid, I am able to detect the partitions with gparted.It's very odd... I've only found a few situations like this on the web. Could it have something to do with the GPT?[URL]
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Oct 4, 2010
My reality distortion field went through a polarity shift today, and nothing's been working like it should. After the 10,000th problem, I decided to just make room for a fresh lucid install and the accompanying stability. It worked well, then I had some sort of a boot error upon reboot. So then I just decided to reinstall. The problem is that neither of my 2 internal HDDs is registering. Currently sda is an 80GB drive with a slackware install, sdb is a 120GB with a 60GB mint partition and (upon previous install) 60GB lucid partition. I've got no important data on any of my partitions yet, but also no net connection. I have install dvds for lucid, mint kde 9, and slackware plus a gparted live. I'm seriously considering making this machine a slack standalone, but then I've got legacy nvidia drivers to deal with.
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Feb 16, 2011
Toshiba T110 laptop, 4 meg ram, kernel 2.6.31-14; multi boot Suse / Ubuntu / Windows; Atheros AR8132 Ethernet card; Realtek RTL8191 SE wireless card.
Installed 9.10 from an old DVD lying around - everything appeared to go ok, but no networks cards - Ethernet or wireless - were detected during the install.
(Later versions do not install - problems somewhere with video card - I need to allow multi kernel selection - but this is another issue)
Does this mean that this install is toast, or can it be saved?
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