Arch Linux

George13417127

Member

Registered: 2019-12-19

Posts: 8

[SOLVED]xrandr not working after new 'fbcon=rotate:1' kernel parameter

When I add the kernel parameters

fbcon=rotate:1

and

vga=795

and reboot, my framebuffer is rotated and has the resolution I want, but when the X Server is started my xrandr settings aren't honored anymore.

This is what xrandr says:

xrandr: Failed to get size of gamma for output default
Screen 0: minimum 640 x 480, current 1024 x 768, maximum 1024 x 768
default connected 1024x768+0+0 0mm x 0mm
   1024x768       0.00* 
   800x600        0.00  
   640x480        0.00  

Last edited by George13417127 (2022-04-12 10:31:33)

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 76,695

Re: [SOLVED]xrandr not working after new 'fbcon=rotate:1' kernel parameter

xrandr looks like you're running on the VESA driver - please post your xorg log, https://wiki.archlinux.org/title/Xorg#General

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

George13417127

Member

Registered: 2019-12-19

Posts: 8

Re: [SOLVED]xrandr not working after new 'fbcon=rotate:1' kernel parameter

Here is the log when xrandr is not working:
http://ix.io/3UUR

and here is the log when xrandr is working:
http://ix.io/3UV2

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 76,695

Re: [SOLVED]xrandr not working after new 'fbcon=rotate:1' kernel parameter

"not working" is the VESA driver, "working" is the nvidia blog, you lack nvidia-lts

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

George13417127

Member

Registered: 2019-12-19

Posts: 8

Re: [SOLVED]xrandr not working after new 'fbcon=rotate:1' kernel parameter

Doh! I was only using linux-lts because of this bug: https://bugs.archlinux.org/task/74291. Also I should know better as my previous thread was this exact problem. Sorry; I'll try hard not to be so foolish in future