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I have an XPS13 with an Ubuntu 18.04.1 LTS running on it. It has a Intel Corporation HD Graphics 5500 integrated graphical card. Everything was fine till the last reboot (before the reboot I have installed some Latex related packages). My display manager now shows only one resolution available: enter image description here

Additionally, when I plug-in the external display nothing happens. Just before the reboot everything was working perfectly.

The output from xrandr looks as follows:

xrandr: Failed to get size of gamma for output default
Screen 0: minimum 3200 x 1800, current 3200 x 1800, maximum 3200 x 1800
default connected primary 3200x1800+0+0 0mm x 0mm
   3200x1800     90.00*

and from sudo lspci | grep -i vga

00:02.0 VGA compatible controller: Intel Corporation HD Graphics 5500 (rev 09)

Does anyone knows any way to fix that issue?

Ludwik
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2 Answers2

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A while ago I ran into a problem with some similaries to yours. So the solution I used might help you. Source: Can't set a higher screen resolution in a external display in a Dell Mini 10v laptop. In the terminal I did the following to add a new resolution of 1920 x 1200:

cvt 1920 1200

Assuming output is: "1920x1200_60.00" 193.25 1920 2056 2256 2592 1200 1203 1209 1245 -hsync +vsync Replace that output in the two lines below with your output of cvt:

xrandr --newmode "1920x1200_60.00"  193.25  1920 2056 2256 2592  1200 1203 1209 1245 -hsync +vsync
xrandr --addmode VGA-1 1920x1200_60.00

In case this would help you, you could add a file .xprofile to your home directory with both xandr lines.

Martijn600
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it's frustating when youre in serious development deadline and suddenly shit like these happen. Please try running commands from steps:

  1. sudo rm /var/lib/apt/lists/lock
  2. sudo rm /var/lib/dpkg/lock
  3. sudo rm /var/lib/dpkg/lock-frontend
  4. sudo dpkg --configure -a
  5. sudo apt clean
  6. sudo apt update --fix-missing
  7. sudo apt install -f
  8. sudo dpkg --configure -a
  9. sudo apt upgrade
  10. sudo apt dist-upgrade
  11. sudo reboot

source: https://ostechnix.com/how-to-fix-broken-ubuntu-os-without-reinstalling-it/

pravesh jamgade
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  • Hi, please add the major steps to execute in the answer too. In case remote link going off-line for any reason. Thank you. – AtomiX84 Nov 18 '21 at 08:08