diff -Nru iio-sensor-proxy-2.8/debian/changelog iio-sensor-proxy-2.8/debian/changelog
--- iio-sensor-proxy-2.8/debian/changelog	2021-04-27 17:28:32.000000000 +0800
+++ iio-sensor-proxy-2.8/debian/changelog	2022-04-01 10:35:41.000000000 +0800
@@ -1,3 +1,11 @@
+iio-sensor-proxy (2.8-1ubuntu2) focal; urgency=medium
+
+  * d/p/0003-prefer-buffer-driver-to-polling-driver.patch:
+      Prefer buffer driver to polling driver for ALS
+      (LP: #1963628)
+
+ -- Yao Wei (魏銘廷) <yao.wei@canonical.com>  Fri, 01 Apr 2022 10:35:41 +0800
+
 iio-sensor-proxy (2.8-1ubuntu1) focal; urgency=medium
 
   * Support polling for sensor using raw value (LP: #1926280)
diff -Nru iio-sensor-proxy-2.8/debian/patches/0003-prefer-buffer-driver-to-polling-driver.patch iio-sensor-proxy-2.8/debian/patches/0003-prefer-buffer-driver-to-polling-driver.patch
--- iio-sensor-proxy-2.8/debian/patches/0003-prefer-buffer-driver-to-polling-driver.patch	1970-01-01 08:00:00.000000000 +0800
+++ iio-sensor-proxy-2.8/debian/patches/0003-prefer-buffer-driver-to-polling-driver.patch	2022-04-01 10:33:20.000000000 +0800
@@ -0,0 +1,33 @@
+From 716ee37d514db965f9e10b070a3a2ce1c7629e76 Mon Sep 17 00:00:00 2001
+From: Bastien Nocera <hadess@hadess.net>
+Date: Tue, 15 Mar 2022 10:57:26 +0100
+Subject: [PATCH] main: Prefer buffer driver to polling driver
+Origin: upstream, https://gitlab.freedesktop.org/hadess/iio-sensor-proxy/-/merge_requests/355
+
+In c7fb43e0, we added a buffer driver for ambient light sensors, but we
+added it to the list of drivers in a way that would favour polling
+drivers. Since we started using IIO_SENSOR_PROXY_TYPE to tag devices,
+and as those can support multiple drivers, we need to prefer the buffer
+driver as it's the one that doesn't require constant monitoring.
+
+This also fixes operations on some Dell laptops where the polling driver
+is completely broken.
+
+See https://gitlab.freedesktop.org/hadess/iio-sensor-proxy/-/merge_requests/352
+
+---
+ src/iio-sensor-proxy.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/src/iio-sensor-proxy.c
++++ b/src/iio-sensor-proxy.c
+@@ -58,8 +58,8 @@
+ 	&iio_buffer_accel,
+ 	&iio_poll_accel,
+ 	&input_accel,
+-	&iio_poll_light,
+ 	&iio_buffer_light,
++	&iio_poll_light,
+ 	&hwmon_light,
+ 	&fake_compass,
+ 	&fake_light,
diff -Nru iio-sensor-proxy-2.8/debian/patches/series iio-sensor-proxy-2.8/debian/patches/series
--- iio-sensor-proxy-2.8/debian/patches/series	2021-04-27 17:28:32.000000000 +0800
+++ iio-sensor-proxy-2.8/debian/patches/series	2022-04-01 10:33:08.000000000 +0800
@@ -1,2 +1,3 @@
 0001-light-Support-sensors-using-raw-values-as-well.patch
 0001-drivers-Support-multi-function-sensors.patch
+0003-prefer-buffer-driver-to-polling-driver.patch