[SOLVED]Colour banding problem on latest xf86 intel drivers and screen

mhcaballero · 2021-03-18 17:47:42

Hello,

I have just installed arch from scratch for the first time, and I have been running into a problem with the graphics driver. I am using a Thinkpad E14 with Intel UHD Graphics and I was encountering severe screen tearing when scrolling and watching videos on the graphics driver that came preinstalled. I then tried to install the package "x86f-video-intel" however that resulted in this: https://imgur.com/a/Phg5Vmz. But when I take a screenshot https://imgur.com/a/mhIfbjZ the image looks fine.
But I solve it by changing to any resolution with ARandR and then returning to the original resolution which is 1080p.
I read https://wiki.archlinux.org/index.php/In … leshooting and I create a file

/etc/X11/xorg.conf.d/20-intel.conf

Section "Device"
  Identifier "Intel Graphics"
  Driver "intel"
  Option "TearFree" "true"
  Option "TripleBuffer" "true"
EndSection

And I continue with the problem.

Last edited by mhcaballero (2021-03-19 21:15:18)

seth · 2021-03-18 21:36:23

https://bbs.archlinux.org/viewtopic.php?id=263955 ?
(Wrongly picked interlacing modeline, post "xrandr -q")

mhcaballero · 2021-03-19 01:26:20

Hello, I read post, in my case I have Qtile with lightdm but when I do 'dm-tool lock' the problem is solved too.
My 'xrandr -q' is:

Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
eDP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 300mm x 170mm
   1920x1080     60.00*+  59.93    48.00
   1680x1050     59.88
   1400x1050     59.98
   1600x900      60.00    59.95    59.82
   1280x1024     60.02
   1400x900      59.96    59.88
   1280x960      60.00
   1368x768      60.00    59.88    59.85
   1280x800      59.81    59.91
   1280x720      59.86    60.00    59.74
   1024x768      60.00
   1024x576      60.00    59.90    59.82
   960x540       60.00    59.63    59.82
   800x600       60.32    56.25
   864x486       60.00    59.92    59.57
   640x480       59.94
   720x405       59.51    60.00    58.99
   640x360       59.84    59.32    60.00
DP1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

I don't have 1920x1080i.

seth · 2021-03-19 08:20:37

You can probably also mitigate it by just switching the frequency forth and back.
Do you have any xrandr calls in yout qtile autostart?

Far stretch (because I assume lightdm is fine, or do you auto-login?)
https://wiki.archlinux.org/index.php/Ke … _KMS_start

mhcaballero · 2021-03-19 11:28:18

Thanks with your help can solve the problem witch https://wiki.archlinux.org/index.php/Ke … _KMS_start
In my '/etc/mkinitcpio.conf' I changed MODULES for

MODULES=(i915)

and then regenerate the initramfs again.

seth wrote:

Do you have any xrandr calls in yout qtile autostart?.

Yes, but I have xrandr call in .xprofile:

  xrandr --output eDP1 --mode 1920x1080 --pos 0x0 --rotate normal --output DP1 --off --output HDMI1 --off --output HDMI2 --primary --mode 1920x1080 --pos 1920x0 --rotate normal --output VIRTUAL1 --off &

How do I close the post as it turned out?
Thanks.

2ManyDogs · 2021-03-19 12:31:51

mhcaballero wrote:

How do I close the post as it turned out?
Thanks.

Edit your first post and add [SOLVED] to the title. See "How To Post" linked in my signature.

seth · 2021-03-19 12:41:21

 xrandr --output eDP1 --mode 1920x1080 --pos 0x0 --rotate normal --output DP1 --off --output HDMI1 --off --output HDMI2 --primary --mode 1920x1080 --pos 1920x0 --rotate normal --output VIRTUAL1 --off &

a) this seeks to activate two outputs? (eDP1 & HDMI2)
b) do *not* fork xrandr calls in startup scripts (remove the tailing ampersand "&")

mhcaballero · 2021-03-19 20:52:29

seth wrote:

a) this seeks to activate two outputs? (eDP1 & HDMI2).

Yes I have other monitor but I had no problem when connecting the other monitor.
My code in xprofile is:

# Screens
hdmi=`xrandr | grep ' connected' | grep 'HDMI2' | awk '{print $1}'`
if [ "$hdmi" = "HDMI2" ]; then
  xrandr --output eDP1 --mode 1920x1080 --pos 0x0 --rotate normal --output DP1 --off --output HDMI1 --off --output HDMI2 --primary --mode 1920x1080 --pos 1920x0 --rotate normal --output VIRTUAL1 --off &
else
  xrandr --output eDP1 --primary --mode 1920x1080 --pos 0x0 --rotate normal --output DP1 --off --output HDMI1 --off --output HDMI2 --off --output VIRTUAL1 --off
fi

seth wrote:

b) do *not* fork xrandr calls in startup scripts (remove the tailing ampersand "&").

Ok, I removed it and it remained as I show in point a)

seth · 2021-03-19 20:59:11

The first branch actually still forks the xrandr call (this is btw. only for principle reasons, since we figured that likely the late kms caused the GPU to be used before being fully initiated)

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.

mhcaballero · 2021-03-19 21:15:45

Thanks.

seth wrote:

The first branch actually still forks the xrandr call (this is btw. only for principle reasons, since we figured that likely the late kms caused the GPU to be used before being fully initiated)
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.

Arch Linux

#1 2021-03-18 17:47:42

[SOLVED]Colour banding problem on latest xf86 intel drivers and screen

#2 2021-03-18 21:36:23

Re: [SOLVED]Colour banding problem on latest xf86 intel drivers and screen

#3 2021-03-19 01:26:20

Re: [SOLVED]Colour banding problem on latest xf86 intel drivers and screen

#4 2021-03-19 08:20:37

Re: [SOLVED]Colour banding problem on latest xf86 intel drivers and screen

#5 2021-03-19 11:28:18

Re: [SOLVED]Colour banding problem on latest xf86 intel drivers and screen

#6 2021-03-19 12:31:51

Re: [SOLVED]Colour banding problem on latest xf86 intel drivers and screen

#7 2021-03-19 12:41:21

Re: [SOLVED]Colour banding problem on latest xf86 intel drivers and screen

#8 2021-03-19 20:52:29

Re: [SOLVED]Colour banding problem on latest xf86 intel drivers and screen

#9 2021-03-19 20:59:11

Re: [SOLVED]Colour banding problem on latest xf86 intel drivers and screen

#10 2021-03-19 21:15:45

Re: [SOLVED]Colour banding problem on latest xf86 intel drivers and screen

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