Solaris Thinkpad T61 / T61p Suspend to RAM support

Currently I am running Solaris Nevada 102 build and suspend to RAM and resume works with Thinkpad T61p and T61 laptops. Only problem I faced is with OSS driver, sound stops working after resuming. With the recent "audiohd" driver integration this can be tackled.  If you have freshly installed Solaris Nevada 102 and above then you can skip the OSS removal step and go direct to enabling suspend to RAM support.

1) remove oss driver with "pkgrm oss"

2) touch /reconfigure and then reboot the machine. 

Now Solaris uses "audiohd" driver for sound instead of oss driver.

Enabling Suspend to RAM support:

           Add the below entry to /etc/power.conf

--------

S3-support              enable

---------

Run " /usr/sbin/pmconfig"  to activate it.

To test the Suspend to RAM support run the command " /usr/openwin/bin/sys-suspend" and then select "suspend" option. To resume press power button.

Comments:

As I'm also running OpenSolaris (2008.11 RC2) on a ThinkPad T61, the more recent builds are the first that the OSS driver is no longer necessary and finally installs working audio right out of the box. The OSS driver formerly also had a high-pitched whine problem but that is all fixed with the new audiohd driver. Nice job to all who contributed!

Posted by Wes W. on November 26, 2008 at 07:18 AM PST #

And what about suspend to disk (hibernation) ?
Does this work on T61 with recent OpenSolaris builds ?

Posted by guest on November 26, 2008 at 04:09 PM PST #

AFAIK Solaris Nevada and OpenSolaris support only Suspend to RAM.

Posted by Pradhap Devarajan on November 26, 2008 at 04:21 PM PST #

Pradhap is correct, there is only Suspend to RAM support for now. But everything works great on a ThinkPad T61. The only two major changes from a default install are to make one line change in /etc/power.conf to enable suspend to RAM, and change the default video driver from "vesa" to "intel" for better video performance with the Intel X3100 video. Nvidia-powered T61 users probably have it even easier.

Posted by Wes W. on November 26, 2008 at 09:24 PM PST #

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