I have installed Ubuntu 14.04 in my machine(with Gigabyte motherboard), having an Acer 19" Monitor. Unfortunately its resolution not working properly. See the image.

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This is my xrandr -q output.

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But when I take system settings for adjusting display it shows unknown display and only two resolutions available on the drop down as given in the picture.

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Please let me know if you need any input from my side.

Thanks in advance.

Please help me to correct the display resolution as I am a beginner to Linux and Ubuntu. This is my last 30 lines of /var/log/Xorg.0.log

enter image description here

The result of running sudo lspci | grep VGA is as follow.

00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller (rev 09)
  • please give us the output of sudo lspci | grep VGA – hermest Sep 30 '14 at 4:19
  • I think it's a problem with your graphics driver, not monitor. What's your video card model? – user300458 Sep 30 '14 at 4:34
  • I don't have any graphics card installed on my system. Is there anything else you required from my side ? like any terminal command output ? – Uvais Ibrahim Sep 30 '14 at 4:49
  • What kernel version are you using? this comment makes me ask – Grizly Sep 30 '14 at 7:23
  • This is my kernal version - 3.13.0-30-generic – Uvais Ibrahim Sep 30 '14 at 8:16

I found this on the Arch Distro BBS maybe it can help: Intel HD Graphics 4600 driver works as Intel Xeon E3-1200

You might try installing the Intel-microcode package as well. You are most likely utilizing the Intel Processor's GPU, without knowing what model Mother Board you have.

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  • sudo apt-get install intel-microcode && sudo reboot helped me. – norbitwise Jun 24 '15 at 22:40

This might help someone.

Try a better VGA cable.

A poor quality VGA cable often causes this kind of problem. I've recently stumbled upon this strange problem and couldn't able to find a reasonable cause for this issue in Ubuntu (In 16.04.2 for me).

Cable type which worked for me : HOTRON E246588 AWM style 20276 VW-1 80°C 30V

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  • Thank you for this response. I ran into this problem. I was in the settings for 20 minutes and entered a few things in the command line. I began to think I needed a new monitor. Then I read this and found the connection to the VGA extension cable was just barely hanging on. Plugged it in properly and "bingo!" problem solved. Thank You! – OnePuttMike Jan 26 '19 at 7:53
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    @OnePuttMike I am glad it helped you. – Vikas Swami Jan 28 '19 at 16:53

Have you tried updating and upgrading your system sudo apt-get update && sudo apt-get upgrade?

Also try going to Software and Updates -> Additional Drivers and changing the display driver.

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  • Yes. I have already ran sudo apt-get update && sudo apt-get upgrade. But didn't help. Also there is no any software updates for this time. – Uvais Ibrahim Sep 30 '14 at 4:11
  • What dies Additional Drivers show? – user271219 Sep 30 '14 at 4:12
  • It says No additional drivers available. – Uvais Ibrahim Sep 30 '14 at 6:37
  • Does your login screen look the same way? – user271219 Sep 30 '14 at 14:17
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    Did you chose the option to install updates upon installation? – user271219 Oct 1 '14 at 13:44

just going to Software and Updates then additional drivers and change the driver by chose the most recent and stable one.

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  • On Software and Updates, in additional drivers tab, it says No additional drivers available. – Uvais Ibrahim Sep 30 '14 at 6:39

Try this solution.

Use sudo apt-get install nvidia-331 nvidia-settings nvidia-prime and then reboot. You can use application named nvidia x server to configure the display.

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