Hdmi Display is always slow [SOLVED]

fsyscall · 2021-09-30 19:10:02

Hello everyone,
I am using laptop with a monitor. I am managing display with arandr. When two display is open,
there is no problem. But when i close eDP, other display is become very very slow and freezing.
Mouse cursor moves very slowly. How do you think I can solve this problem?

xrandr -q

Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 16384 x 16384
eDP connected primary 1920x1080+1920+0 (normal left inverted right x axis y axis) 344mm x 193mm
   1920x1080    144.03*+  60.00  
   1680x1050    144.03  
   1280x1024    144.03  
   1440x900     144.03  
   1280x800     144.03  
   1280x720     144.03  
   1024x768     144.03  
   800x600      144.03  
   640x480      144.03  
DisplayPort-1-0 disconnected (normal left inverted right x axis y axis)
HDMI-A-1-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 598mm x 336mm
   1920x1080     60.00*+  74.97    50.00    59.94  
   1680x1050     60.00  
   1600x900      60.00  
   1280x1024     75.02    60.02  
   1440x900      60.00  
   1280x800      60.00  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    60.00    59.94  
   720x400       70.08

Last edited by fsyscall (2021-12-03 20:15:57)

seth · 2021-09-30 22:41:25

Optimus/prime system?
https://wiki.archlinux.org/title/PRIME#Reverse_PRIME - see the 2nd point in the blue note

fsyscall · 2021-10-01 17:59:43

Thanks for your answer, adding 10-gpu.conf fixed the problem.

/etc/X11/xorg.conf.d/10-gpu.conf

Section "Device"
     Identifier "AMD"
     Driver "amdgpu"
     BusID "PCI:3:0:0"
EndSection

seth · 2021-10-01 21:29:45

I'm not sure how this would impact the described problems, but if the GPU is late you might occasionally run into a race condition and run on software emulation, https://wiki.archlinux.org/title/Kernel … _KMS_start

Edit: Please always remember to mark resolved threads by editing your initial posts subject - so others will know that there's no task left, but maybe a solution to find.
Thanks.

Last edited by seth (2021-10-01 21:30:01)

Arch Linux

#1 2021-09-30 19:10:02

Hdmi Display is always slow [SOLVED]

#2 2021-09-30 22:41:25

Re: Hdmi Display is always slow [SOLVED]

#3 2021-10-01 17:59:43

Re: Hdmi Display is always slow [SOLVED]

#4 2021-10-01 21:29:45

Re: Hdmi Display is always slow [SOLVED]

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