MESA-LOADER: failed to open kms_swrast

tacotaco

new to MM. I am receiving this error during startup of MM.
MESA-LOADER: failed to open kms_swrast: /usr/lib/dri/kms_swrast_dri.so: cannot open shared object file: Permission denied (search paths /usr/lib/aarch64-linux-gnu/dri:$${ORIGIN}/dri:/usr/lib/dri)
failed to load driver: kms_swrast

default modules plus calendar-monthly and MMM-NOAA3 installed.

Hardware : BCM2835
Revision : c03114
Serial : 100000001c249f69
Model : Raspberry Pi 4 Model B Rev 1.4

PRETTY_NAME=“Debian GNU/Linux 11 (bullseye)”
NAME=“Debian GNU/Linux”
VERSION_ID=“11”
VERSION=“11 (bullseye)”
VERSION_CODENAME=bullseye
ID=debian
HOME_URL=“https://www.debian.org/”
SUPPORT_URL=“https://www.debian.org/support”
BUG_REPORT_URL=“https://bugs.debian.org/”

can anyone advise? GPU driver problem?

thx

sdetweil

@tacotaco yes, probably.

no fix that I can find yet

KI6UVE

@tacotaco
Did you ever get this resolved? I have the same error.

Thanks,
Hans

bhepler

@KI6UVE - I also have this error on a Innovatek Quadra (can’t find an RPi for sale for love or money).

Bah. I thought I had something helpful to add. Never mind. It’s not working for me either.

sdetweil

@bhepler @KI6UVE

see
https://forums.raspberrypi.com/viewtopic.php?t=338778

but, looks like this is a known unsolved problem on 64 but pi os.

andyrak

@tacotaco

I know this is an old issue, but I had this happen to me while setting up MM on a Le Potato board.

Seems like a GPU issue, and you can bypass this by adding this snippet right before you call npm start:

export ELECTRON_DISABLE_GPU=1

In my case, I’m using PM2 to manage startup, so my ~/mm.sh file looks like this:

cd ./MagicMirror
export ELECTRON_DISABLE_GPU=1
DISPLAY=:0 npm start

I don’t know the full extent of the issue, but I know that this works and allows me to run MM.

Hopefully this helps you and anyone else looking for this in the future.