Comment 36 for bug 451282

Thank you, Pauls. The fglrx driver suggested by Ubuntu was the generic: "3D-accelerated proprietary graphics driver for ATI cards." Installing the driver seemed to create more (and more serious) problems than it solved, so I uninstalled it. (I'm not a gamer and probably don't need accelerated graphics.) Here is the result of the command you suggested with no proprietary driver present:

find: `/sys/fs/fuse/connections/8388613': Permission denied
find: `/sys/fs/fuse/connections/8388609': Permission denied
find: `/sys/fs/fuse/connections/8388610': Permission denied
/sys/devices/virtual/backlight/acpi_video0/brightness
/sys/devices/virtual/backlight/acpi_video0/actual_brightness
/sys/devices/virtual/backlight/acpi_video0/max_brightness
/sys/devices/pci0000:00/0000:00:1c.3/0000:06:00.0/leds/iwl-phy0::radio/brightness
/sys/devices/pci0000:00/0000:00:1c.3/0000:06:00.0/leds/iwl-phy0::radio/max_brightness
/sys/devices/pci0000:00/0000:00:1c.3/0000:06:00.0/leds/iwl-phy0::assoc/brightness
/sys/devices/pci0000:00/0000:00:1c.3/0000:06:00.0/leds/iwl-phy0::assoc/max_brightness
/sys/devices/pci0000:00/0000:00:1c.3/0000:06:00.0/leds/iwl-phy0::RX/brightness
/sys/devices/pci0000:00/0000:00:1c.3/0000:06:00.0/leds/iwl-phy0::RX/max_brightness
/sys/devices/pci0000:00/0000:00:1c.3/0000:06:00.0/leds/iwl-phy0::TX/brightness
/sys/devices/pci0000:00/0000:00:1c.3/0000:06:00.0/leds/iwl-phy0::TX/max_brightness
/sys/devices/pci0000:00/0000:00:1e.0/0000:0a:03.1/leds/mmc0::/brightness
/sys/devices/pci0000:00/0000:00:1e.0/0000:0a:03.1/leds/mmc0::/max_brightness
/sys/module/video/parameters/brightness_switch_enabled