Comment 7 for bug 31425

Upgraded to Dapper. Now resume never works (garbled video) after suspend regardless of whether lid was closed or not.

Ubuntuforums.org user "hizaguchi" confirms the same problem with resume from suspend on the same computer Inspiron 4150 (Breezy): http://ubuntuforums.org/showpost.php?p=883559&postcount=2

If I switch to APM, I am able to suspend from console using "apm -s" but cannot suspend via Ubuntu quit menu (only locks screen) nor from terminal with "apm -s" (system locks on resume).

Currently my /etc/default/acpi-support reads:
[code]
ACPI_SLEEP=true
ACPI_HIBERNATE=true
ACPI_SLEEP_MODE=mem
MODULES=""
MODULES_WHITELIST="radeon"
SAVE_VBE_STATE=false
# VBESTATE=/var/lib/acpi-support/vbestate
POST_VIDEO=false
SAVE_VIDEO_PCI_STATE=true
USE_DPMS=true
# RADEON_LIGHT=true
# DOUBLE_CONSOLE_SWITCH=true
HIBERNATE_MODE=shutdown
LOCK_SCREEN=true
# DISABLE_DMA=true
# RESET_DRIVE=true
STOP_SERVICES="mysql "
RESTART_IRDA=false
ENABLE_LAPTOP_MODE=false
[/code]

And relevant(?) portions of my /etc/X11/xorg.conf:
[code]
Section "Module"
 Load "bitmap"
 Load "dbe"
 Load "ddc"
 Load "dri"
 Load "extmod"
 Load "freetype"
 Load "glx"
 Load "int10"
 Load "type1"
 Load "v4l"
 Load "vbe"
EndSection

Section "Device"
 Identifier "ATI Technologies, Inc. Radeon Mobility M7 LW [Radeon Mobility 7500]"
 Driver "radeon"
 BusID "PCI:1:0:0"
 Option "AGPMode" "4"
 Option "RenderAccel" "off"
EndSection

Section "Monitor"
 Identifier "LCD XGA 1024x768"
 Option "DPMS"
 HorizSync 28-49
 VertRefresh 43-72
EndSection
[/code]