JVC 731 ACPI problems

[moe <moe-9AEwkcPRwFQ@public.gmane.org>]

hi,

i recently bought a JVC 731 Centrino/Pentium M subnotebook.
is it possible to make acpi work properly on it?

right now i have various problems under vanilla kernel 2.6.10;
e.g. the remaining battery time is way overestimated, standby and
suspend to ram/disk don't work.

the missing suspend-functionality bothers me the most since it
significantly limits the machines runtime.

the closest approximation to a proper standby that i can get is:

1. kill all running processes except the bare minimum
2. echo -n "mem" >/sys/power/state
3. the machine shuts down as expected, the power LED blinks
4. when i try to wake it up (power button) it turns on, the fan goes to max
   but nothing more happens (screen remains black). at that point i have to
   use hardware-reset.

any attempts to enter other standby modes or failing to kill all running
processes before entering "suspend to mem" usually causes the machine to lock
up hard.

to keep this short i have only appended lspci output below.
please let me know if i can provide any additional information that might
help to tackle the issue. i have more detailed descriptions of the
misbehaviour ready to post but i didn't want to overwhelm you at first.
i'm also willing to try out patches or any hints you can point me to.

any help would be highly appreciated.


best regards,
moe



lspci output:

0000:00:00.0 Host bridge: Intel Corp. 82852/855GM Host Bridge (rev 02)
0000:00:00.1 System peripheral: Intel Corp. 855GM/GME GMCH Memory I/O Control Registers (rev 02)
0000:00:00.3 System peripheral: Intel Corp. 855GM/GME GMCH Configuration Process Registers (rev 02)
0000:00:02.0 VGA compatible controller: Intel Corp. 82852/855GM Integrated Graphics Device (rev 02)
0000:00:02.1 Display controller: Intel Corp. 82852/855GM Integrated Graphics Device (rev 02)
0000:00:1d.0 USB Controller: Intel Corp. 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 (rev 03)
0000:00:1d.1 USB Controller: Intel Corp. 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2 (rev 03)
0000:00:1d.2 USB Controller: Intel Corp. 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3 (rev 03)
0000:00:1d.7 USB Controller: Intel Corp. 82801DB/DBM (ICH4/ICH4-M) USB 2.0 EHCI Controller (rev 03)
0000:00:1e.0 PCI bridge: Intel Corp. 82801 PCI Bridge (rev 83)
0000:00:1f.0 ISA bridge: Intel Corp. 82801DBM LPC Interface Controller (rev 03)
0000:00:1f.1 IDE interface: Intel Corp. 82801DBM (ICH4) Ultra ATA Storage Controller (rev 03)
0000:00:1f.5 Multimedia audio controller: Intel Corp. 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 03)
0000:00:1f.6 Modem: Intel Corp. 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Modem Controller (rev 03)
0000:01:03.0 CardBus bridge: Ricoh Co Ltd RL5c475 (rev b8)
0000:01:03.1 FireWire (IEEE 1394): Ricoh Co Ltd R5C551 IEEE 1394 Controller
0000:01:05.0 Network controller: Intel Corp. PRO/Wireless LAN 2100 3B Mini PCI Adapter (rev 04)
0000:01:08.0 Ethernet controller: Intel Corp. 82801BD PRO/100 VM (MOB) Ethernet Controller (rev 83)



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