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#1 2022-09-19 06:34:59

hirnschmalz
Member
Registered: 2020-11-19
Posts: 32

Unable to set lower resolution under X11/Wayland on Plasma

I'm unable to set a lower resolution on my TUXEDO InfityBook Pro14 Gen6 on Plasma with X11 or Wayland (it worked on GNOME / Wayland previously)

neofetch
                   -`
                  .o+`                   user@hostname
                 `ooo/                   -------------------- 
                `+oooo:                  OS: Arch Linux x86_64 
               `+oooooo:                 Host: TUXEDO InfinityBook Pro 14 Gen6 Standard 
               -+oooooo+:                Kernel: 5.19.8-arch1-1 
             `/:-:++oooo+:               Uptime: 1 hour, 49 mins 
            `/++++/+++++++:              Packages: 940 (pacman) 
           `/++++++++++++++:             Shell: zsh 5.9 
          `/+++ooooooooooooo/`           Resolution: 2880x1800, 1920x1920, 2560x1440 
         ./ooosssso++osssssso+`          DE: Plasma 5.25.5 
        .oossssso-````/ossssss+`         WM: KWin 
       -osssssso.      :ssssssso.        Theme: [Plasma], Breeze [GTK2/3] 
      :osssssss/        osssso+++.       Icons: [Plasma], breeze [GTK2/3] 
     /ossssssss/        +ssssooo/-       Terminal: java 
   `/ossssso+/:-        -:/+osssso+-     CPU: 11th Gen Intel i7-11370H (8) @ 3.300GHz 
  `+sso+:-`                 `.-/+oso:    GPU: Intel TigerLake-LP GT2 [Iris Xe Graphics] 
 `++:.                           `-/+/   Memory: 11331MiB / 64054MiB 
 .`                                 `/
lspci | grep -i vga
00:02.0 VGA compatible controller: Intel Corporation TigerLake-LP GT2 [Iris Xe Graphics] (rev 01)
xrandr-q
eDP-1 connected 2880x1800+4480+60 (normal left inverted right x axis y axis) 302mm x 188mm
   2880x1800     90.00*+
   2880x1620     59.96    59.97  
   2560x1600     59.99    59.97  
   2560x1440     59.99    59.99    59.96    59.95  
   2048x1536     85.00    75.00    60.00  
   1920x1440     85.00    75.00    60.00  
   1856x1392     75.00    60.01  
   1792x1344     75.00    60.01  
   2048x1152     59.99    59.98    59.90    59.91  
   1920x1200     59.88    59.95  
   1920x1080     60.01    59.97    59.96    59.93  
   1600x1200     85.00    75.00    70.00    65.00    60.00  
   1680x1050     59.95    59.88  
   1400x1050     74.76    59.98  
   1600x900      59.99    59.94    59.95    59.82  
   1280x1024     85.02    75.02    60.02  
   1400x900      59.96    59.88  
   1280x960      85.00    60.00  
   1440x810      60.00    59.97  
   1368x768      59.88    59.85  
   1280x800      59.99    59.97    59.81    59.91  
   1152x864      75.00  
   1280x720      60.00    59.99    59.86    59.74  
   1024x768      85.00    75.05    60.04    85.00    75.03    70.07    60.00  
   1024x768i     86.96  
   960x720       85.00    75.00    60.00  
   928x696       75.00    60.05  
   896x672       75.05    60.01  
   1024x576      59.95    59.96    59.90    59.82  
   960x600       59.93    60.00  
   832x624       74.55  
   960x540       59.96    59.99    59.63    59.82  
   800x600       85.00    75.00    70.00    65.00    60.00    85.14    72.19    75.00    60.32    56.25  
   840x525       60.01    59.88  
   864x486       59.92    59.57  
   700x525       74.76    59.98  
   800x450       59.95    59.82  
   640x512       85.02    75.02    60.02  
   700x450       59.96    59.88  
   640x480       85.09    60.00    85.01    72.81    75.00    59.94  
   720x405       59.51    58.99  
   720x400       85.04  
   684x384       59.88    59.85  
   640x400       59.88    59.98    85.08  
   576x432       75.00  
   640x360       59.86    59.83    59.84    59.32  
   640x350       85.08  
   512x384       85.00    75.03    70.07    60.00  
   512x384i      87.06  
   512x288       60.00    59.92  
   416x312       74.66  
   480x270       59.63    59.82  
   400x300       85.27    72.19    75.12    60.32    56.34  
   432x243       59.92    59.57  
   320x240       85.18    72.81    75.00    60.05  
   360x202       59.51    59.13  
   360x200       85.04  
   320x200       85.27  
   320x180       59.84    59.32  
   320x175       85.27

 cat /sys/class/drm/card0-eDP-1/edid | edid-decode
edid-decode (hex):

00 ff ff ff ff ff ff 00 0e 6f 02 14 00 00 00 00
00 1e 01 04 b5 1e 13 78 02 ee 95 a3 54 4c 99 26
0f 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 b6 c8 40 a0 b0 08 4e 70 30 20
36 00 2e bc 10 00 00 18 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 18 00 00 00 fe 00 43
53 4f 54 20 54 33 0a 20 20 20 20 20 00 00 00 fe
00 4d 4e 45 30 30 37 5a 41 31 2d 31 0a 20 00 d3

----------------

Block 0, Base EDID:
  EDID Structure Version & Revision: 1.4
  Vendor & Product Identification:
    Manufacturer: CSO
    Model: 5122
    Made in: 2020
  Basic Display Parameters & Features:
    Digital display
    Bits per primary color channel: 10
    DisplayPort interface
    Maximum image size: 30 cm x 19 cm
    Gamma: 2.20
    Supported color formats: RGB 4:4:4
    First detailed timing includes the native pixel format and preferred refresh rate
  Color Characteristics:
    Red  : 0.6396, 0.3300
    Green: 0.2998, 0.5996
    Blue : 0.1503, 0.0595
    White: 0.3134, 0.3291
  Established Timings I & II: none
  Standard Timings: none
  Detailed Timing Descriptors:
    DTD 1:  2880x1800   89.999860 Hz   8:5    169.020 kHz    513.820000 MHz (302 mm x 188 mm)
                 Hfront   48 Hsync  32 Hback   80 Hpol N
                 Vfront    3 Vsync   6 Vback   69 Vpol N
    Manufacturer-Specified Display Descriptor (0x00): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 18 '................'
    Alphanumeric Data String: 'CSOT T3'
    Alphanumeric Data String: 'MNE007ZA1-1'
Checksum: 0xd3

I dont have xf86-video-intel installed. As far as I see I would need to create a custom edid file, since mine only support the full resolution. Am I right?

Last edited by hirnschmalz (2022-09-19 06:40:22)

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#2 2022-09-20 05:18:29

hirnschmalz
Member
Registered: 2020-11-19
Posts: 32

Re: Unable to set lower resolution under X11/Wayland on Plasma

After installing xf86-video-intel and a reboot I was able to change the resolution. Unfortunately some apps (e.g. Thunderbird) are really sluggish now.

If I open Thunderbird only the outline of the window is drawn. After some seconds (10-30) the content appears. Same for system messages.

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#3 2022-09-20 07:01:07

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 17,032

Re: Unable to set lower resolution under X11/Wayland on Plasma

Remove xf86-video-intel you really don't want to use that on HW this new and will have broken your HW acceleration. How exactly does "unable to lower resolution" show itself? which commands are you using? Also as most modern panels just look like shit with a lower resolution, is your actual end goal to get bigger UI elements? In which case you probably rather want to look into properly configuring HiDPI: https://wiki.archlinux.org/title/HiDPI

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