Sway On RaspberryPi5 Help

[Johnson_YHX]

I installed gentoo on my raspberypi5 followed this guide https://wiki.gentoo.org/wiki/How_to_ins ... berry_Pi_5, and everything look like nice, but I found that I couldn't launch swaywm(wayland).
When I use

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dbus-run-session sway

on tty1, I got the error message

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Failed to open any DRM device

and

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unable to create backend

.
By the way, my x11-environment looks like good, and I can launch dwm with `startx`, So, please help me see how to solve it, thank you very much!

here is my /boot/config.txt

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# have a properly sized image
disable_overscan=1

# Enable audio (loads snd_bcm2835)
dtparam=audio=on

# Automatically load overlays for detected cameras
camera_auto_detect=1

# Automatically load overlays for detected DSI displays
display_auto_detect=1

# Automatically load initramfs files, if found
auto_initramfs=1

# Enable DRM VC4 V3D driver
dtoverlay=vc4-kms-v3d
max_framebuffers=2

# Don't have the firmware create an initial video= setting in cmdline.txt.
# Use the kernel's default instead.
disable_fw_kms_setup=1

# Run as fast as firmware / board allows
arm_boost = 1

# LED
dtparam=eth_led0=4
dtparam=eth_led1=4
dtparam=act_led_trigger=none
dtparam=act_led_activelow=off

# I2C
# dtparam=i2c_arm=on

# SPI
# dtparam=spi=on

[all]
disable_splash=1

and my /boot/cmdline.txt

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dwc_otg.lpm_enable=0 console=tty1 root=/dev/mmcblk0p3 rootfstype=ext4 rootwait

and I have edited the config file `/etc/X11/xorg.conf.d/99-vc4.conf`

[NeddySeagoon]

Johnson_YHX,

Welcome to Gentoo.

I have

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# Enable DRM VC4 V3D driver -pi5 for the Pi5
dtoverlay=vc4-kms-v3d-pi5

Notice the -pi5 on the end. Hopefully the automatics get that right anyway.

Disable

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arm_boost = 1 

until it works.
That's overclocking which brings its own problems.

Wayland does no use Xorg, so /etc/X11/xorg.conf.d/99-vc4.conf will not be consulted. Rather, wayland is an alternative to Xorg.

Post the command and complete output of

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dbus-run-session sway

See the Wayland wiki page too.

[Johnson_YHX]

Finally I solved this problem, I reinstalled the package `wlroots` with USE `drm`

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gui-libs/wlroots-0.17.2::gentoo was built with the following:
USE="X drm libinput session vulkan -liftoff -tinywl -x11-backend -xcb-errors"

then swaywm worked on my pi. Thanks for your reply!

[carfentanyl]

That worked for me too!

[JungerBoyo]

Hello, I think your issue can be related to my issue.

[Hu]

Hello, I think your issue can be related to my issue.

Are you saying that the solution posted here worked for you or that it does not work for you?

[JungerBoyo]

Hello @Hu It does work for me . I just linked it as a potential cause of the issue.