Suspend2 on Thinkpad W510

Filed under Gentoo Linux

Following my previous posts and using xhci & xhci_hcd for USB 3.0 support leads to problems when suspend to disk/ram: Some USB 3.0 devices just don’t suspend and the hibernate process will be canceled.
On thing we can do is to unbind all devices using the USB kernel modules. A list of active devices can be found as follows:

So we just have to unbind those devices:

Note that your USB attached devices will stop working until you re-bind them:

You can put the stuff together in a scriptlet to do an unbind before suspend and a re-bind on resume:

To install the scriptlet just create a file in /etc/hibernate/scriptlets.d and define a device list e.g. in /etc/hibernate/common.conf:

Unforunately the aproach above did not work. Some USB devices seems to be still active and refused to suspend. Since I do not really have any USB 3.0 device, I decided to disable USB 3.0 until I get the above approach working:

With this kernel configuration, we get suspend to disk working. But resuming the systems brings another problem with NVidia drivers 260.19.21 (64bit): The resumed system was either extremely slow or we just got a white screen. In both cases, restarting X fixed the problem but this is obviously not a solution. I found some information about a bug using NVidia’s TwinView together with hibernation. Following the proposed workaround, I enabled the NvAGP driver option:

And prevent the kernel from loading intel_agp module. Either by adding the following line to the modprobe blacklist:

Or you just make sure that the modules is neither build-in nor compiled as module in the current kernel configuration.