[Bugme-new] [Bug 4266] New: Thinkpad R31 fails to wake from S3 suspend.

[bugme-daemon at osdl.org]

http://bugme.osdl.org/show_bug.cgi?id=4266

           Summary: Thinkpad R31 fails to wake from S3 suspend.
    Kernel Version: 2.6.10
            Status: NEW
          Severity: normal
             Owner: acpi_power-sleep-wake at kernel-bugs.osdl.org
         Submitter: kevin at eorbit.net


Distribution: Ubuntu
Hardware Environment: IBM Thinkpad R31, 1133MHz Celeron version

Software Environment: Ubuntu 4.10 "Warty" release
Problem Description: 
I was unable to get any ACPI suspend modes with the 2.4.8.1 kernel that shipped
with the distribution, so I upgraded to the 2.6.10-3-386 build backported from
the Hoary (unstable) release. Now S1 suspend, S4 hibernate (with swsusp) and
resuming from those states works. 

S3 suspend works, but upon resuming, the cd-rom spins and the HD appears to
start to spin up, but LCD doesn't come back on. The keyboard is unresponsive and
the only way to get the machine back is to hold down the power button until it
powers off completely and reboot it.

I have built a custom DSDT using the directions from
http://home.fhtw-berlin.de/~s0502837/r31/ and loaded it with the ACPI-initrd
patch and it doesn't seem to make a difference.

Steps to reproduce:
1) Boot to single-user mode.
2) Unload all unused modules.
3) echo 3 > /proc/acpi/sleep
4) The system suspends without error.
5) Trip the lid switch or press the power button.
6) The cdrom spins, the cpu fan comes on, the hard drive begins to spin up, but
    the LCD never comes back on and the keyboard is unresponsive (even magic
sysreq combos don't work)

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