While running firefox-88.0.1 on 6.9-mostly-current I was getting gmail tab crashing with this on stdout:
libGL error: MESA-LOADER: failed to retrieve device information libGL error: Version 4 or later of flush extension not found libGL error: failed to load driver: i915 libGL error: failed to open /dev/dri/card0: Permission denied libGL error: failed to load driver: iris Surprisingly, despite my /etc/fbtab having /dev/ttyC0 0600 /dev/console:/dev/wskbd:/dev/wskbd0:/dev/wsmouse:/dev/wsmouse0:/dev/ttyCcfg:/dev/ttyC4:/dev/drm0:/dev/drmR128:/dev/dri/card0:/dev/dri/renderD128 The /dev/dri/card0 device was owned by root. I couldn't reproduce the conditions that led to this (I was switching consoles and poking at ddb when I hit the problem) The solution is to logout and log back to get the device owned by myself. Thanks Greg