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sway: fallback to legacy DRM interface on virtio

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Some time ago, 'WLR_RENDERER=pixman' stopped working properly on virtio.
Appears that it only affects the atomic KMS and falling back to the
legacy DRM interface was enough to work around.

While legacy is a less tested codepath, I don't see any other ways to
address that :'(
This commit is contained in:
Aleksei Bavshin 2024-01-15 21:40:22 -08:00 • committed by Aleksei Bavshin
commit ddf31e44d7
3 changed files with 30 additions and 10 deletions
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17
initial-setup/run-gui-backend
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@ -41,10 +41,19 @@ chmod +x ${RUN_SCRIPT}
# Set some compatibility variables if we're in a VM
if systemd-detect-virt --quiet --vm; then
export WLR_NO_HARDWARE_CURSORS=1
export WLR_RENDERER=pixman
fi
case $(systemd-detect-virt --vm) in
"none"|"")
;;
"kvm")
# WLR_NO_HARDWARE_CURSORS=1 is not needed with legacy DRM interface
export WLR_RENDERER=pixman
export WLR_DRM_NO_ATOMIC=1
;;
*)
# https://github.com/swaywm/sway/issues/6581
export WLR_NO_HARDWARE_CURSORS=1
;;
esac
sway --config=${CONFIG_FILE}
exit_code=$(< ${EXIT_CODE_SAVE})