Ubuntu – Wayland how to set a custom resolution

display-resolutionintel graphicswayland

Old title – "change resolution to 1280×1024 using xrandr gives: X Error of failed request: BadValue (integer parameter out of range for operation)"

I have installed a fresh Ubuntu 17.10 and have a monitor with 5:4 resolution. settings has no resolution higher than 1024×768. But I need the resolution 1280×1024 (5:4).
I use the default motherboard graphics card:

# lspci|grep VGA
00:02.0 VGA compatible controller: Intel Corporation 4 Series Chipset Integrated Graphics Controller (rev 03)

Also xrandr gives the following:

$ xrandr
Screen 0: minimum 320 x 200, current 1024 x 768, maximum 8192 x 8192
XWAYLAND0 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
   1024x768      59.92*+

I tried to add the 1280×1024 resolution using xrandr. so first created the resolution information using gtf:

$ gtf 1280 1024 60

  # 1280x1024 @ 60.00 Hz (GTF) hsync: 63.60 kHz; pclk: 108.88 MHz
  Modeline "1280x1024_60.00"  108.88  1280 1360 1496 1712  1024 1025 1028 1060  -HSync +Vsync

Then added to resolutions:

xrandr --newmode "1280x1024_60.00"  108.88  1280 1360 1496 1712  1024 1025 1028 1060  -HSync +Vsync

then again did the command: xrandr --addmode XWAYLAND0 1280x1024_60.00

Then nothing changed. When I tried to change it using xrandr --output XWAYLAND0 --mode 1280x1024_60.00 --rate 60 But an error occurred:

$ xrandr --output XWAYLAND0 --mode 1280x1024  --rate 60
X Error of failed request:  BadValue (integer parameter out of range for operation)
  Major opcode of failed request:  140 (RANDR)
  Minor opcode of failed request:  7 (RRSetScreenSize)
  Value in failed request:  0x0
  Serial number of failed request:  21
  Current serial number in output stream:  22

I don't know what did I do wrong. Or how to change resolution to the correct one: 1280×1024

Best Answer

You can try to set a custom resolution with wayland with some effort and mixed results.

You should probably start by filing a bug report, including your graphics card and monitor(s), against wayland

How do I report a bug?

https://help.ubuntu.com/community/ReportingBugs


Adding a Custom Resolution

xrandr will NOT work with Wayland !!

You can try to add a custom resolution using your modline similar to how you would with xrandr, but with a few additional steps.

First, I am not sure if this works with secure boot, so I advise you start by Disabling secure boot

From https://ask.fedoraproject.org/en/question/99867/how-to-add-a-custom-resolution-to-weyland-fedora-25/ and https://wiki.archlinux.org/index.php/Kernel_mode_setting#Forcing_modes_and_EDID

First, you'll need to clone edid-generator. Then you can pass it your modeline (with the same arguments you gave xrandr --newmode

From https://github.com/akatrevorjay/edid-generator

Install requirements

sudo apt install zsh edid-decode automake dos2unix

Download & extract

wget https://github.com/akatrevorjay/edid-generator/archive/master.zip
unzip master.zip 
cd edid-generator-master

The binary is in ~/edid-generator-master as modeline2edid

Run modeline2edid with your modline, using the example in askfedora link,

./modeline2edid - <<< 'Modeline "3840x2160" 533.6 3840 3982 4027 4064 2160 2170 2180 2190 +hsync +vsync'
Searching for runaway unicorns in '/dev/stdin'
-- Found naughty unicorn: Modeline "3840x2160" 533.6 3840 3982 4027 4064 2160 2170 2180 2190 +hsync +vsync
Wrote 3840x2160.S

Modify that command to your desired resolution.

See How to set a custom resolution? for details (if needed)

Then generate the edid binary with make

make #output not posted

You will now have your new .bin , 3840x2160.bin in this case.

Now, from The Arch wiki enable your custom resoulution

sudo mkdir /usr/lib/firmware/edid
sudo cp 3840x2160.bin /usr/lib/firmware/edid

Change 3840x2160.bin to your custom resolution.

Note: There are already some custom .bin included, you can see them with ls *.bin I am not sure if you can use them without make or not.

Test by rebooting

When you reboot, edit the kernel line in grub, adding

drm_kms_helper.edid_firmware=edid/3840x2160.bin

See How do I add a kernel boot parameter? and https://wiki.ubuntu.com/Kernel/KernelBootParameters

Go down to the line starting with linux and add drm_kms_helper.edid_firmware=edid/3840x2160.bin at the end of the line after ro quiet splash

Assuming all that works, make it permanent

sudo nano /etc/default/grub

Add in the custom resolutoin

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash drm_kms_helper.edid_firmware=edid/3840x2160.bin"

Save your edit Ctrl+x

update grub

sudo update-grub

Reboot and enjoy your custom resolution