no backlight when resume Fujitsu ST5032 tablet

[Bret Comstock Waldow]

On resume, display backlight does not turn on - screen remains black.

This is a work-around, and hopefully leads to the proper fix:
bret@aphrodite:~$ diff -C 3 /usr/lib/hal/scripts/linux/hal-system-power-suspend-linux /usr/lib/hal/scripts/linux/hal-system-power-suspend-linux.original
*** /usr/lib/hal/scripts/linux/hal-system-power-suspend-linux 2009-02-26 18:56:16.000000000 +1300
--- /usr/lib/hal/scripts/linux/hal-system-power-suspend-linux.original 2009-02-26 16:19:57.000000000 +1300
***************
*** 29,35 ****

  if [ "$NEW_INTEL" ] || [ -d /sys/module/nvidia ] || [ -d /sys/module/fglrx ];
  then
! HAL_PROP_POWER_MANAGEMENT_QUIRK_DPMS_ON=true
      HAL_PROP_POWER_MANAGEMENT_QUIRK_VBESTATE_RESTORE=false
      HAL_PROP_POWER_MANAGEMENT_QUIRK_VBEMODE_RESTORE=false
      HAL_PROP_POWER_MANAGEMENT_QUIRK_VGA_MODE_3=false
--- 29,35 ----

  if [ "$NEW_INTEL" ] || [ -d /sys/module/nvidia ] || [ -d /sys/module/fglrx ];
  then
! HAL_PROP_POWER_MANAGEMENT_QUIRK_DPMS_ON=false
      HAL_PROP_POWER_MANAGEMENT_QUIRK_VBESTATE_RESTORE=false
      HAL_PROP_POWER_MANAGEMENT_QUIRK_VBEMODE_RESTORE=false
      HAL_PROP_POWER_MANAGEMENT_QUIRK_VGA_MODE_3=false
bret@aphrodite:~$
bret@aphrodite:~$ lsb_release -rd
Description: Ubuntu 8.04.2
Release: 8.04
bret@aphrodite:~$ sudo lspci -v
00:00.0 Host bridge: Intel Corporation Mobile 915GM/PM/GMS/910GML Express Processor to DRAM Controller (rev 04)
        Subsystem: Fujitsu Limited. Unknown device 12d7
        Flags: bus master, fast devsel, latency 0
        Capabilities: [e0] Vendor Specific Information

00:02.0 VGA compatible controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 04) (prog-if 00 [VGA controller])
        Subsystem: Fujitsu Limited. Unknown device 12df
        Flags: bus master, fast devsel, latency 0, IRQ 17
        Memory at b0080000 (32-bit, non-prefetchable) [size=512K]
        I/O ports at 1400 [size=8]
        Memory at c0000000 (32-bit, prefetchable) [size=256M]
        Memory at b0000000 (32-bit, non-prefetchable) [size=256K]
        Capabilities: [d0] Power Management version 2

00:02.1 Display controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 04)
        Subsystem: Fujitsu Limited. Unknown device 12df
        Flags: fast devsel
        Memory at 88000000 (32-bit, non-prefetchable) [disabled] [size=512K]
        Capabilities: [d0] Power Management version 2

00:1c.0 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 1 (rev 04) (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0
        Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
        Memory behind bridge: b0100000-b01fffff
        Capabilities: [40] Express Root Port (Slot+) IRQ 0
        Capabilities: [80] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable-
        Capabilities: [90] Subsystem: Fujitsu Limited. Unknown device 12ea
        Capabilities: [a0] Power Management version 2

00:1d.0 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #1 (rev 04) (prog-if 00 [UHCI])
        Subsystem: Fujitsu Limited. Unknown device 12e8
        Flags: bus master, medium devsel, latency 0, IRQ 19
        I/O ports at 1420 [size=32]

00:1d.1 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #2 (rev 04) (prog-if 00 [UHCI])
        Subsystem: Fujitsu Limited. Unknown device 12e8
        Flags: bus master, medium devsel, latency 0, IRQ 20
        I/O ports at 1440 [size=32]

00:1d.7 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB2 EHCI Controller (rev 04) (prog-if 20 [EHCI])
        Subsystem: Fujitsu Limited. Unknown device 12e9
        Flags: bus master, medium devsel, latency 0, IRQ 19
        Memory at b0040000 (32-bit, non-prefetchable) [size=1K]
        Capabilities: [50] Power Management version 2
        Capabilities: [58] Debug port

00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev d4) (prog-if 01 [Subtractive decode])
        Flags: bus master, fast devsel, latency 0
        Bus: primary=00, secondary=06, subordinate=0e, sec-latency=168
        Memory behind bridge: b0200000-b02fffff
        Capabilities: [50] Subsystem: Fujitsu Limited. Unknown device 12e3

00:1e.2 Multimedia audio controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Audio Controller (rev 04)
        Subsystem: Fujitsu Limited. Unknown device 12ec
        Flags: bus master, medium devsel, latency 0, IRQ 16
        I/O ports at 1800 [size=256]
        I/O ports at 1480 [size=64]
        Memory at b0040800 (32-bit, non-prefetchable) [size=512]
        Memory at b0040400 (32-bit, non-prefetchable) [size=256]
        Capabilities: [50] Power Management version 2

00:1e.3 Modem: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Modem Controller (rev 04) (prog-if 00 [Generic])
        Subsystem: Fujitsu Limited. Unknown device 1321
        Flags: medium devsel, IRQ 18
        I/O ports at 2000 [size=256]
        I/O ports at 1c00 [size=128]
        Capabilities: [50] Power Management version 2

00:1f.0 ISA bridge: Intel Corporation 82801FBM (ICH6M) LPC Interface Bridge (rev 04)
        Subsystem: Fujitsu Limited. Unknown device 12e4
        Flags: bus master, medium devsel, latency 0

00:1f.1 IDE interface: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) IDE Controller (rev 04) (prog-if 8a [Master SecP PriP])
        Subsystem: Fujitsu Limited. Unknown device 12e5
        Flags: bus master, medium devsel, latency 0, IRQ 22
        I/O ports at 01f0 [size=8]
        I/O ports at 03f4 [size=1]
        I/O ports at 0170 [size=8]
        I/O ports at 0374 [size=1]
        I/O ports at 1410 [size=16]

00:1f.3 SMBus: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) SMBus Controller (rev 04)
        Subsystem: Fujitsu Limited. Unknown device 12e7
        Flags: medium devsel, IRQ 11
        I/O ports at 1460 [size=32]

02:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5751M Gigabit Ethernet PCI Express (rev 11)
        Subsystem: Fujitsu Limited. Unknown device 1300
        Flags: bus master, fast devsel, latency 0, IRQ 17
        Memory at b0100000 (64-bit, non-prefetchable) [size=64K]
        Expansion ROM at <ignored> [disabled]
        Capabilities: [48] Power Management version 2
        Capabilities: [50] Vital Product Data
        Capabilities: [58] Message Signalled Interrupts: Mask- 64bit+ Queue=0/3 Enable-
        Capabilities: [d0] Express Endpoint IRQ 0

06:03.0 CardBus bridge: O2 Micro, Inc. OZ711MP1/MS1 MemoryCardBus Controller (rev 20)
        Subsystem: Fujitsu Limited. Unknown device 131e
        Flags: bus master, stepping, slow devsel, latency 168, IRQ 17
        Memory at b0213000 (32-bit, non-prefetchable) [size=4K]
        Bus: primary=06, secondary=07, subordinate=0a, sec-latency=176
        Memory window 0: 8c000000-8ffff000 (prefetchable)
        Memory window 1: 90000000-93fff000
        I/O window 0: 00002400-000024ff
        I/O window 1: 00002800-000028ff
        16-bit legacy interface ports at 0001

06:03.1 CardBus bridge: O2 Micro, Inc. OZ711MP1/MS1 MemoryCardBus Controller (rev 20)
        Subsystem: Fujitsu Limited. Unknown device 131e
        Flags: bus master, stepping, slow devsel, latency 168, IRQ 17
        Memory at b0214000 (32-bit, non-prefetchable) [size=4K]
        Bus: primary=06, secondary=0b, subordinate=0e, sec-latency=176
        Memory window 0: 94000000-97fff000 (prefetchable)
        Memory window 1: 98000000-9bfff000
        I/O window 0: 00002c00-00002cff
        I/O window 1: 00003000-000030ff
        16-bit legacy interface ports at 0001

06:03.2 SD Host controller: O2 Micro, Inc. Integrated MMC/SD Controller
        Subsystem: Fujitsu Limited. Unknown device 131e
        Flags: slow devsel, IRQ 17
        Memory at b0210000 (32-bit, non-prefetchable) [size=256]
        Capabilities: [a0] Power Management version 2

06:03.3 Bridge: O2 Micro, Inc. Integrated MS/xD Controller
        Subsystem: Fujitsu Limited. Unknown device 131e
        Flags: slow devsel, IRQ 11
        Memory at b0211000 (32-bit, non-prefetchable) [size=4K]
        Capabilities: [a0] Power Management version 2

06:05.0 Ethernet controller: Atheros Communications Inc. AR5413 802.11abg NIC (rev 01)
        Subsystem: Fujitsu Limited. Unknown device 1329
        Flags: bus master, medium devsel, latency 168, IRQ 22
        Memory at b0200000 (32-bit, non-prefetchable) [size=64K]
        Capabilities: [44] Power Management version 2

06:06.0 FireWire (IEEE 1394): NEC Corporation IEEE 1394 Host Controller (rev 01) (prog-if 10 [OHCI])
        Subsystem: Fujitsu Limited. Unknown device 11a0
        Flags: bus master, medium devsel, latency 160, IRQ 21
        Memory at b0212000 (32-bit, non-prefetchable) [size=4K]
        Capabilities: [60] Power Management version 2

bret@aphrodite:~$ uname -a
Linux aphrodite 2.6.24-23-generic #1 SMP Mon Jan 26 00:13:11 UTC 2009 i686 GNU/Linux

[dino99 (9d9)]

http://www.freedesktop.org/wiki/Software/hal/