Ask Your Question

Fedora 28: Screen resolution not working

asked 2018-07-24 06:04:33 -0600

starchyme gravatar image

updated 2018-07-26 03:05:55 -0600

hhlp gravatar image

Did a new install of Fedora 28, and my monitor no longer can be selected to change from 1024x768 to 1366x768. On Fedora 27 this worked correctly.

I have tried many suggestions from changing "nomodeset", "UEFI"-stuff to "xandr" and monitor detection routes with no success.

My monitor is an Acer v93HQL and is 1366x768 capable. Regression back to F27 will be painful. Are there perhaps a stepped approach to resolving the screen resolution issue?

Using AMD/Radeon 8570HD graphics card. (Worked on F27, so expecting F28 to retain support for card/screen at least)

cat proc/cmdline: 
BOOT_IMAGE=/vmlinuz-4.17.7-200.fc28.x86_64 root=/dev/mapper/fedora_localhost--live-root ro resume=/dev/mapper/fedora_localhost--live-swap rhgb quiet LANG=en_ZA.UTF-8 nomodeset

xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1024 x 768, current 1024 x 768, maximum 1024 x 768
default connected primary 1024x768+0+0 0mm x 0mm
   1024x768      76.00*

inxi -SGxxxz:
  Host: localhost.localdomain Kernel: 4.17.7-200.fc28.x86_64 x86_64 
  bits: 64 compiler: gcc v: 8.1.1 Console: tty 1 wm: KWin dm: gdm,sddm 
  Distro: Fedora release 28 (Twenty Eight) 
  Card-1: AMD Richland [Radeon HD 8570D] driver: N/A bus ID: 00:01.0 
  chip ID: 1002:990e 
  Display: server: Fedora Project 1.19.6 
  driver: ati,fbdev,modesetting,radeon unloaded: vesa 
  compositor: gnome-shell resolution: 1024x768~76Hz 
  OpenGL: renderer: llvmpipe (LLVM 6.0 128 bits) v: 3.3 Mesa 18.0.5 
  compat-v: 3.0 direct render: Yes
edit retag flag offensive close merge delete


If after system update (e.g. using sudo dnf update --refresh) and reboot problem still persists, edit you question and add output of:

  • cat /proc/cmdline
  • xrandr
  • inxi -SGxxxz
ozeszty gravatar imageozeszty ( 2018-07-24 07:12:31 -0600 )edit

It was nto an upgrade. Clean install. performed functio in any case with no difference. The question has been edited with the required outputs.

starchyme gravatar imagestarchyme ( 2018-07-24 10:05:54 -0600 )edit

remove nomodeset, once you are certain that the correct video driver is installed, by running lsmod to see which vga driver is being used. What i understand is that open source for AMD cards is better than the AMD provided drivers.

SteveEbey73701 gravatar imageSteveEbey73701 ( 2018-07-24 10:46:00 -0600 )edit

When "nomodeset" is removed, then Fedora crashes immediately at startup and reboots. this then carries on in a continious loop untill nomodeset is placed back in.

starchyme gravatar imagestarchyme ( 2018-07-24 11:55:25 -0600 )edit

Have this started immediately after installation or after an update to latest F28 packages? Is this also happening on a live system booted from USB stick?

ozeszty gravatar imageozeszty ( 2018-07-24 15:51:18 -0600 )edit

1 Answer

Sort by ยป oldest newest most voted

answered 2018-07-26 01:32:02 -0600

starchyme gravatar image

running "modprobe radeon modeset=1" resolved the problem.

edit flag offensive delete link more

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Question Tools

1 follower


Asked: 2018-07-24 06:04:33 -0600

Seen: 1,134 times

Last updated: Jul 26 '18